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Sample records for permian san andres

  1. Origins of the Salado, Seven Rivers, and San Andres salt margins in Texas and New Mexico: Revision 1: Topical report

    International Nuclear Information System (INIS)

    Boyd, S.D.; Murphy, P.J.

    1987-02-01

    The present boundaries of the San Andres, Seven Rivers, and Salado salts generally lie along the periphery of the Palo Duro and Tucumcari Basins. Various geologic mechanisms occurring singularly or in combination determined the positions of the salt margins. These mechanisms include nondeposition of salt and syndepositional and postdepositional dissolution. In New Mexico, San Andres units pinch out against the Pedernal and Sierra Grande Uplifts, indicating that nondeposition established the original salt margins there. Syndepositional dissolution of exposed Upper San Andres salts occurred in response to Guadalupian upwarp of the basin margins. Triassic erosion differentially removed Permian salt-bearing formations along the uplifts. Late Tertiary dissolution is indicated by fill of north-south trending collapse valleys. In Texas, Guadalupian upwarp along the Amarillo Uplift caused pinchout of Units 2 and 3 in the Lower San Andres and influenced the deposition of subsequent salt-bearing strata. The discontinuity of Upper San Andres evaporites across the Amarillo Uplift suggests syndepositional dissolution. Along the eastern and northeastern basin margin, dissolution may have accompanied Triassic erosion of locally uplifted Upper Permian strata. Tertiary dissolution is recognized beneath anomalously thick Ogallala Formation sections that overlie collasped Permian strata. 49 refs., 31 figs., 2 tabs

  2. MASSIVE QUANTITIES OF PELAGIC Sargassum ON THE SHORES OF SAN ANDRES ISLAND, SOUTHWESTERN CARIBBEAN

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    Brigitte GAVIO

    2015-01-01

    Cantidades masivas de Sargassum pelágicos en las costas de San Andrés Isla, Caribe suroccidental Se reporta la llegada de una biomasa inusual de Sargassum flotante, compuesta por las especies S. fluitans y S. natans, a la costa nororiental de la isla de San Andrés. La época y el tamaño del evento nunca habían sido reportados anteriormente para la isla.

  3. Miocene and Pleistocene mollusks from San Andres Island (Caribbean Sea, Colombia) and Paleogeographic considerations

    International Nuclear Information System (INIS)

    Diaz M, Juan Manuel; Garcia Llano, Cesar Fernando

    2010-01-01

    San Andres Island is the largest emerged portion of the oceanic archipelago of San Andres and Providencia, southwestern Caribbean Sea; it originated as a coralline atoll during Miocene times. The central and highest part of the island consists of a calcareous crest, the San Andres Formation, formed by Neogene lagoonal and reefal deposits. This crest is surrounded by a calcareous platform of Pleistocene age (San Luis Formation) which emerges only along the island coast, whereas its most part is submerged and covered by a Recent reef complex. Fossil material of molluscs from these two formations was collected in various sites throughout the island and taxonomically identified. In the four sites sampled in the San Andres Formation, material belonging to 19 gastropod and 37 bivalve species was obtained, most of them relatively well represented in other geologic formations of the Caribbean region that are stratigraphically situated between the upper Miocene and the middle Pliocene. Some elements occurring in this formation, such as Ostrea haitiensis, Meretrix dariena and Siphocypraea henekeni, were widely distributed in the Caribbean Miocene Province. In the San Luis Formation, material belonging to 18 gastropod and 11 bivalve species was obtained, most of them also represented in the Recent molluscan fauna of the region. The estimated age of this formation is Sangamonian, hence corresponding to similar formations occurring in Grand Cayman, Jamaica, Hispaniola, the Netherlands Antilles and other Caribbean islands, with which it also shows a great similarity in the composition of the molluscan fauna.

  4. Energy Transition Initiative: Island Energy Snapshot - San Andres and Providencia (Fact Sheet); NREL(National Renewable Energy Laboratory)

    Energy Technology Data Exchange (ETDEWEB)

    None

    2015-03-01

    This profile provides a snapshot of the energy landscape of the Archipelago of San Andres, Providencia, and Santa Catalina (unpopulated), also known as San Andres and Providencia, which is equidistant between Costa Rica and Jamaica and 775 kilometers northwest of Colombia. The archipelago is part of Colombia, though Nicaragua has also laid claim to it.

  5. 78 FR 16569 - Iowa Pacific Holdings, LLC, Permian Basin Railways, and San Luis & Rio Grande Railroad-Corporate...

    Science.gov (United States)

    2013-03-15

    ... DEPARTMENT OF TRANSPORTATION Surface Transportation Board [Docket No. FD 35721] Iowa Pacific Holdings, LLC, Permian Basin Railways, and San Luis & Rio Grande Railroad--Corporate Family Transaction... subsidiaries Permian Basin Railways (PBR) and San Luis & Rio Grande Railroad (SLRG), and Massachusetts Coastal...

  6. El patrimonio identitario de la comunidad de San Andrés

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    Carlos Córdova Martínez

    2006-01-01

    Full Text Available La identidad y el patrimonio son elementos recurrentes si se quiere defender la cultura frente a un mundo globalizado. Dicha labor debe realizarse de lo local a lo nacional y viceversa. El trabajo aborda el patrimonio de una pequeña comunidad holguinera, el Consejo Popular de San Andrés, cuyo centro es el poblado homónimo. Con un largo devenir histórico, que se remonta a fines del siglo XVI. San Andrés atesora un rico patrimonio, que puede incluirse fundamentalmente dentro de la cultura campesina.

  7. San Andrés: Cotidianidad turística vs. idealismo desarrollista

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    José Ernesto Ramírez

    1988-01-01

    Full Text Available Pragmatic adaptation and idealistic intervention: An analytical description of development agencies within a context of political clientelism in San Andrés Island Colombia. (Tesis de doctorado en desarrollo. University Madison Wisconsin, 1980 Michael Jack Rosherg. University Microfilm Intemational. Ann Arbor, 1982, 301 págs. 6 ils. 40 cuadros.

  8. Etnic discrimination and income in San Andrés Island, Colombia

    Directory of Open Access Journals (Sweden)

    Javier Yabrudy

    2011-12-01

    Full Text Available This document examines, bases on the analysis of observable characteristics, if an income gapexists between the raizal population and non raizal population of San Andres Island. For thispurpose, the information of the SISBEN II survey for the year 2004, compelled by the NationalPlanning Department (DNP, Spanish acronym is used. The methodological strategy uses quantileregressions to determine the existence of pay gaps throughout the distribution of income. Theresults suggest that being raizal has a negative impact on income for the lower quantiles. However,this difference vanishes as income increases, becoming positive at higher levels.

  9. Origen de la surgencia del Balneario de San Andrés (Provincia de Jaén)

    OpenAIRE

    Hidalgo Estévez, Mari Carmen; Rey Arrans, Javier; Redondo, L.

    1997-01-01

    The hydrogeological context of the San Andrés spa (province of Jaén) is analysed in this work. Piezometric data, hydrochemical analysis and groundwater quality trends are discussed for groundwater samples obtained from the main aquifer units in the region (jurassic carbonatic aquifer and miocene detrital aquifer) in order to stablish the origin of the San Andrés spring. Considering altitude, discharge rate, temperature and hydrochemical features of the spring, it seems to be related to the mi...

  10. Statistical zonation technique and its application to the San Andres reservoir in the Poza Rica area, Vera Cruz, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Campa, M F; Romero, M R

    1969-01-01

    A statistical zonation technique developed by J.D. Testerman is presented referring to its application to the San Andres reservoir in the Poza Rica area in Veracruz, Mex. The method is based on a statistical technique which permits grouping of similar values of certain parameter, i.e., porosity, for individual wells within a field. The resulting groups or zones are used in a correlation analysis to deduce whether there is continuity of porosity in any direction. In the San Andres reservoir, there is a continuity of the porous media on NE-SW direction. This is an important fact for the waterflooding project being carried on.

  11. Geología y aspectos geográficos de la isla de san andrés, colombia

    OpenAIRE

    Vargas Cuervo, German

    2012-01-01

    La Isla de San Andrés ha sido definida geológicamente por varios autores en dos unidades calcáreas de características bien marcadas: Una unidad de calizas heterogéneas,denominada como Formación San Andrés de edad Mioceno y una unidad de calizas coralinas de edad Pleistoceno, conocida como Formación San Luis. La primera unidad aflora en la parte central de la isla y representa la zona de colinas suaves con alturas máximas de 87 m.s.n.m y la Formación San Luis constituye la región plana a suave...

  12. The epidemiology and transmissibility of Zika virus in Girardot and San Andres island, Colombia, September 2015 to January 2016

    Science.gov (United States)

    Rojas, DP; Dean, NE; Yang, Y; Kenah, E; Quintero, J; Tomasi, S; Ramirez, EL; Kelly, Y; Castro, C; Carrasquilla, G; Halloran, ME; Longini, IM

    2016-01-01

    Transmission of Zika virus (ZIKV) was first detected in Colombia in September 2015. As of April 2016, Colombia had reported over 65,000 cases of Zika virus disease (ZVD). We analysed daily surveillance data of ZVD cases reported to the health authorities of San Andres and Girardot, Colombia, between September 2015 and January 2016. ZVD was laboratory-confirmed by reverse transcription-polymerase chain reaction (RT-PCR) in the serum of acute cases within five days of symptom onset. We use daily incidence data to estimate the basic reproductive number (R0) in each population. We identified 928 and 1,936 reported ZVD cases from San Andres and Girardot, respectively. The overall attack rate for reported ZVD was 12.13 cases per 1,000 residents of San Andres and 18.43 cases per 1,000 residents of Girardot. Attack rates were significantly higher in females in both municipalities (p < 0.001). Cases occurred in all age groups with highest rates in 20 to 49 year-olds. The estimated R0 for the Zika outbreak was 1.41 (95% confidence interval (CI): 1.15–1.74) in San Andres and 4.61 (95% CI: 4.11–5.16) in Girardot. Transmission of ZIKV is ongoing in the Americas. The estimated R0 from Colombia supports the observed rapid spread. PMID:27452806

  13. Distribution and infestation levels of Crypticerya multicicatrices Kondo and Unruh (Hemiptera: Monophlebidae on San Andrés island

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    Takumasa Kondo Kondo

    2014-01-01

    Full Text Available The fluted scale Crypticerya multicicatrices (Hemiptera: Monophlebidae is an invasive insect that became a major pest on the island of San Andrés. To generate control strategies for this insect, its distribution and infestation levels on palm species, fruit trees, leguminous trees and other plant species were determined during January 14–18, 2013. A total of 96 points were sampled in order to determine the distribution of the insect on the island. During the study, the fluted scale was found distributed throughout the island of San Andrés, including Haynes Cay and Johnny Cay. The palms were the plants with the highest levels of infestation, 70.8% had some degree of infestation (37.5% high infestation levels; followed by fruit trees which had 65.6% with some degree of infestation (30.2% high infestation levels; followed by leguminous trees which had 59.6% with some degree of infestation (13.5% high infestation levels and finally “other hosts” which had 51.1% with some level of infestation (11.5% high infestation levels. This study is the first detailed mapping of C. multicicatrices on the island of San Andrés which will become the basis for future work on the population dynamics of the fluted scale and its distribution on the island.

  14. san Andrés, Pinar del Río, Cuba

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    N. Valdés-Rodriguez

    2006-01-01

    Full Text Available El presente trabajo se realizó en la Unidad Forestal San Andrés, en el área que corresponde a las alturas de pizarras, tuvo como objetivo realizar una valoración de diferentes aspectos de su morfología y el endemismo de las especies de plantas leñosas acompañantes en los ecosistemas de pinares naturales presentes en esa zona. Para realizar esta valoración se tomaron en cuenta aspectos como el tipo biológico, la textura de la hoja, el tamaño de la planta, la distribución de la especie y la familia de las especies recolectadas en las zonas de muestreo. Se llegó a la conclusión de que la vegetación acompañante se caracteriza por ser especies de pequeño a mediano tamaño, con hojas medianamente pequeñas, y que no existe entre estas especies ninguna endémica a nivel de distrito o local.

  15. San Andres, Providence and Santa Catalina: a challenge of sustainable development

    International Nuclear Information System (INIS)

    Rodriguez S, Liliana

    2003-01-01

    Satisfactorily to implement the postulates of Biosphere Reserve Sea flower in the Archipelago of San Andres, Providencia and Santa Catalina demands to conjugate national, regional and local efforts in order to surpass the complex economic and social situation untied in this zone of the country after the loss of competitiveness and benefits that the model of Free Port meant to him from 1953 and which they have let perceive itself from principles of the Nineties when Colombia adopted the economic opening like development policy, changes that have resulted in the deterioration of the natural resources and the atmosphere of the islands and finally in the quality of life of their inhabitants and that imposes to this zone of the national territory the challenge to reach the balance man-nature that implies the concept of Biosphere Reserve, category acquired by the Archipelago before UNESCO in the 2000 The absence of agreed economic model with geographic, space, social, cultural and environmental conditions of the Archipelago, together with factors like: (i) political national that does not know the particularities and specificities of this zone of the country, (ii) inter institutional lack of joint in the different levels from the public administration which they concur there, (iii) absence of operation of the Gobernacion Departamental like administrator of the regional public management, (IV) absence of effectiveness population policy to control their indiscriminate increase and (v) lack of social conscience of inhabitants as visitors of the islands with respect to the adapted use of their natural resources and its constitutional and legal obligations to participate in the management like executors or veedors, among other aspects, jeopardizes their development in order to reach the environmental sustainability

  16. La literacidad en el área urbana del municipio de San Andrés de Tumaco

    OpenAIRE

    Zárate Pinto, Germán Camilo

    2014-01-01

    El propósito de la investigación es tener un acercamiento a la literacidad del municipio de San Andrés de Tumaco, en la que se identifiquen rasgos propios, usos y valoraciones de las prácticas y eventos letrados. Por el carácter cognitivo y cultural de la propuesta se utilizaron estrategias de recolección de información propias de la investigación cualitativa ajustadas a los Nuevos Estudios de la Literacidad. Los instrumentos utilizados fueron la observación y la entrevista semiestructurada q...

  17. Survey of benthic dinoflagellates associated to beds of Thalassia testudinumin San Andres Island, Seaflower biosphere reserve, Caribbean Colombia

    International Nuclear Information System (INIS)

    Rodriguez E, Angelica; Mancera Pineda, J Ernesto; Gavio, Brigitte

    2010-01-01

    In order to determine the occurrence of epiphytic toxic dinoflagellates in the coastal waters of San Andres Island, Caribbean Colombia, we analyzed the sea grass beds on the northern and eastern sides of the island. We found seven species of toxicogenic dinoflagellates, belonging to the genera Prorocentrum and Ostreopsis. The cell densities were generally low if compared with previous studies in other Caribbean sites, ranging from 0 to 836 cells/dry weights. The species encountered are known to produce toxins causing the diarrheic shellfish poisoning and ciguatera, poisonings which have been documented in the island.

  18. Representar, practicar y repensar el Patrimonio Cultural: el caso de San Andrés Calpan, Puebla

    OpenAIRE

    Arellano Espinosa, Andrea

    2015-01-01

    El presente texto es el resultado de una investigación antropológica sobre las representaciones sociales y las prácticas socioculturales en torno a un sitio patrimonio cultural: el ex convento de San Andrés Calpan, Puebla, uno de los primeros monasterios franciscanos edificados en México. Desde 1994 forma parte de la designación Primeros monasterios del siglo XVI en las laderas del Popocatépetl de la lista del Patrimonio de la Humanidad de UNESCO. Cuatro capillas posas, las más importantes po...

  19. Estudio de la frecuencia de hemoglobinopatías en las islas de San Andrés y Providencia, Colombia

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    María del Pilar Bernal

    1995-03-01

    Full Text Available Se realizó un estudio destinado a determinar la frecuencia de hemoglobinopatías en las islas caribeñas de San Andrés y Providencia, en 544 individos individuos: 443 de San Andrés y 101 de Providencia. La frecuencia en San Andrés fue del 12,8% y en Providencia 20,8%; las hemoglobinopatías más frecuentes fueron: el rasgo falciforme, la hemoglobina C y la beta-talasemia. Los datos indican, que las hemoglobinopatías en esta región del país como problema de salud pública, tienen importancia y nos dan información sobre el origen geográfico de la población.

  20. A Transnational World Fractured but Not Forgotten: British West Indian Migration to the Colombian Islands of San Andrés and Providence

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    Sharika Crawford

    2011-06-01

    Full Text Available This article examines British West Indian migration to the Colombian archipelago of San Andrés and Providence in the late nineteenth to early twentieth century. While the United Fruit plantations, Panama Canal, oil fields in Venezuela, and railroad projects in Central America generated a strong demand for a large West Indian workforce, no such development took place on San Andrés and Providence. As a result, the profile of West Indian migration looks different than to the Spanish-speaking circum-Caribbean, with more professionals and merchants and fewer unskilled laborers. In the absence of mass migration, there was less hostility toward West Indian newcomers to San Andrés and Providence islands.

  1. The natural population of bees of the earth (Melipona beecheii) and their flora in the valley San Andrés

    OpenAIRE

    Katiuska Ravelo Pimentel; Fernando Ramón Hernández Martínez; Iván Paneque Torres; Luisa Elena Toledo Peña; Hilda Gutiérrez Hernández

    2014-01-01

    The relationship of the natural population of bees of the earth is evaluated (Melipona beecheii) and its flora in the valley San Andrés, to inclination observations and samplings carried out in the formations studied vegetable. The melliferous plants and their use like tree of the nest of Melipona beecheii were studied for each one of the vegetable formations of the valley San Andrés, the indexes of diversity and their relationship were also analyzed with the values of density of colonies. It...

  2. Marine macroalgae in the agronomy and potential use of floating sargassum for manure production in the San Andres and Providencia Archipelago, Colombia

    International Nuclear Information System (INIS)

    Bula Meyer, German

    2004-01-01

    An account is made on the use of marine macroalgae in agronomy and the potential that floating Sargassum arriving to san Andres and Providencia has for this activity. This Sargassum, which has been a nuisance for the tourist economy of the islands, promises to be an excellent resource for manure production

  3. Estudios sobre los uredinales del archipiélago de San Andrés y providencia, Colombia.

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    Pardo Cardona Víctor Manuel

    2003-12-01

    Full Text Available Doce especies de Uredinales fueron colectados en las islas de San Andrés y Providencia durante una visita de colección efectuada en el mes de Octubre de 2002. Los hospederos fueron determinados y herborizados y a partir de ellos se elaboraron micropreparados que contenían los soros con las esporas de los hongos, los cuales fueron observados y estudiados al microscopio. Puccinia cyperi-tagetiformis Kem es nuevo registro para Colombia; se registró a Brachiaria distachya (L Stapf como nuevo hospedante de Uromyces clignyi Patouillard & Hariot y a Cyperus rotundus L como nuevo hospedante para P. cyperi-tagetiformis. Las demos especies colectados han sido registradas en el neotrópico sobre hospedantes previamente conocidos.

  4. ANGIOSPERM FLAG SPECIES FOR MANGROVE CONSERVATION IN San AndrÉs Island (colombia ARE HIGHLY VULNERABLE AND locally rare

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    Gloria Andrea Murcia

    2016-01-01

    Full Text Available El concepto de especies bandera ha sido empleado en proyectos de conservación por 50 años. Se proponen aquí cinco especies nativas de la Isla de San Andrés como especies bandera para la conservación de los pocos remanentes de manglar en esta Isla: Bontia daphnoides (Myoporaceae, Canella winterana (Canellaceae, Eustoma exaltatum (Gentianaceae, Rhabdadenia biflora (Apocynaceae y Selenicereus grandiflorus (Cactaceae. Cuatro de estas especies son documentadas aquí por primera vez para el Archipiélago, y tres representan los primeros reportes para la Flora de Colombia, dos de ellos (Canellaceae y Myoporaceae a nivel de familia.

  5. The natural population of bees of the earth (Melipona beecheii and their flora in the valley San Andrés

    Directory of Open Access Journals (Sweden)

    Katiuska Ravelo Pimentel

    2014-06-01

    Full Text Available The relationship of the natural population of bees of the earth is evaluated (Melipona beecheii and its flora in the valley San Andrés, to inclination observations and samplings carried out in the formations studied vegetable. The melliferous plants and their use like tree of the nest of Melipona beecheii were studied for each one of the vegetable formations of the valley San Andrés, the indexes of diversity and their relationship were also analyzed with the values of density of colonies. It was determined that the density of colonies of bees of the earth is directly related with the wealth and diversity of species of melliferous plants found in the study area. He was also proven that the arboreal species more used as tree of the nest they are: Bursera simaruba, Guazuma ulmifolia, Psidium guajava, Mangifera indica and Roystonea regia.

  6. A sedimentological analysis of sediments corresponding to the San Gregorio Formation )Lower Permian), located in the eastern border of the North Uruguayan Basin, Sierra Guazunambi

    International Nuclear Information System (INIS)

    Goso Aguilar, C.; Gama, E.

    1998-01-01

    A sedimentological analysis of sediments corresponding to the San Gregorio Formation (Lower Permian), located in the eastern border of the Norte Uruguayan Basin, Sierra Guazunambi, Cerro Largo Departament was made. Facies analysis of about 100 otucrops fand more than 1.300 meters, in an area of 45 square kilometers showed diamictites rhytmites and massive sandstones, formed by gravitational sedimentary flows. Also present are prodelta mudrocks and deltaic front sandstones.(author)

  7. Uso y actitudes relacionados a las drogas en las estudiantes de enfermería de la Universidad Mayor de San Andrés Uso e atitudes relacionados às drogas em estudantes de enfermagem da Universidade Maior de San Andres Use and attitudes about drugs among nursing students at the Universidad Mayor de San Andres

    Directory of Open Access Journals (Sweden)

    Iblin Elizabeth Enriquez Flores

    2004-04-01

    Full Text Available Este trabajo representa los resultados del Uso y Actitudes relacionando el alcohol, tabaco, Hojas de coca, tranquilizantes y anfetaminas en Estudiantes de Enfermería de la Universidad Mayor de San Andrés. El objetivo es analizar las actitudes mediante el uso de diferentes substancias con aquellos que no usan en los últimos 12 meses. Los datos fueron recolectados en Agosto del 2002, utilizando un cuestionario auto administrado y distribuido, garantizando el anonimato. Se obtuvieron estos resultados: Las actitudes relacionadas a las drogas aprueban el uso de hojas de coca, uso de alcohol, uso de tranquilizantes y desaprueban el uso de cocaína. El uso personal de drogas en los últimos 12 meses corresponde a: hojas de coca diariamente, alcohol menos que una vez por semana y tabaco diariamente. El principal motivo de uso de estas drogas vinculase a la práctica religiosa; los estudiantes son introducidos por primera vez por familiares y por amigos/enamorados.Este trabalho representa os resultados do Uso e Atitudes relacionados ao álcool, tabaco, folhas de coca, tranqüilizantes e anfetaminas em estudantes de enfermagem da Universidade Mayor de San Andrés. O objetivo é analisar as atitudes mediante o uso das diferentes substâncias com aqueles que usaram ou não drogas nos últimos 12 meses. Os dados da amostra estratificada e intencional foram coletados em agosto de 2002, utilizando um questionário auto administrado distribuído para preservar o anonimato. Obtiveram-se estes resultados: as atitudes relacionadas às drogas demonstram a aprovação do uso das folhas de coca, álcool, tranqüilizantes e desaprovam o uso da cocaína. O uso pessoal de drogas nos últimos 12 meses corresponde a: às folhas de coca diariamente, ao álcool menos que uma vez por semana, e tabaco diariamente. O principal motivo do uso destas drogas vincula-se a prática religiosa; os estudantes são introduzidos pela primeira vez pelos familiares, pelos amigos

  8. Microbial Inoculantes Effects on Growth Promotion of Mangrove and Citrullus vulgaris San Andrés Isla, Colombia

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    Tania Galindo

    2006-01-01

    Full Text Available In order to test the effect of two microbial inoculants (obtained from red and black mangrove roots on the growth and stability of mangrove and watermelon plants, four treatments were carried out in San Andres Island, Colombia. The treatments consisted in the application of the inoculants in: A. germinans propagules collected in a mangrove area, and then individually planted in gavels with sun-pasteurized soil (in order to decrease the microbial load, A. germinans and R. mangle plants collected in the proximity of nursery trees, A. germinans and R. mangle planted and maintained in nursery, and in Citrullus vulgaris seeds planted in a traditional cultivar without chemical fertilizers. The growth and vegetative development variables were: number of nodes, number of leaves and steam length. The inoculants (phosphate solubilizing microorganisms -PSM- and nitrogen fixing bacteria -NFB- were applied in the mentioned vegetable material, doing measures during three months. The results show a positive effect on growth measured by steam length in plants treated specifically with the inoculants in C. vulgaris and A. germinans seedlings maintained in nursery.

  9. El arte de la conversión: modelos educativos del Colegio de San Andrés de Quito

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    Andrea Lepage

    2007-06-01

    Full Text Available El ensayo analiza el papel que desempeñó el Colegio de San Andrés de Quito en la conversión de los indígenas durante el siglo XVI y el florecimiento de un centro importante de producción artística. El artículo propone que la designación actual del colegio, como una escuela de arte, puede ser una consecuencia tardía de la inestable relación entre arte y religión, tal como fue cultivada dentro de la institución franciscana. Se trató, por lo tanto, de una superposición del valor religioso sobre el artístico, mediante el cual se adoctrinaba a los estudiantes. El artículo enfatiza en la apropiación de destrezas artísticas por parte de los indígenas, quienes adquirieron dominio sobre estas artes, las mercadearon y provocaron una inesperada tensión en las concepciones franciscanas acerca de la religión y el uso del arte.

  10. A "coca-cola" shape: cultural change, body image, and eating disorders in San Andrés, Belize.

    Science.gov (United States)

    Anderson-Fye, Eileen P

    2004-12-01

    Eating disorders have been associated with developing nations undergoing rapid social transition, including participation in a global market economy and heavy media exposure. San Andrés, Belize, a community with many risk factors associated with the cross-cultural development of eating disorders, has shown remarkable resistance to previously documented patterns, despite a local focus on female beauty. Drawing on longitudinal person-centered ethnography with adolescent girls, this article examines why this community appears exceptional in light of the literature. First, community beauty and body image ideals and practices are explicated. Then, a protective ethnopsychology is proposed as a key mediating factor of the rapid socio-cultural change among young women. Finally, possible nascent cases of eating disordered behavior are discussed in light of their unique phenomenology: that is, having to do more with economic opportunity in the tourism industry and less with personal distress or desire for thinness. Close, meaning-centered examination of eating and body image practices may aid understanding and prevention of eating disorders among adolescents undergoing rapid social change in situations of globalization and immigration.

  11. Velocidad de descomposición de la hojarasca en diferentes sustratos de manglar en San Andrés Isla, Caribe colombiano

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    Omar Alfonso Sierra Rozo

    2007-01-01

    foliar del manglar en la acumulación de sedimentos es indispensable para estimar la estabilidad de los habitats costeros frente a los cambios del nivel del mar e impactos ocasionados por eventuales disturbios naturales. Con base a los resultados obtenidos y aquéllos de trabajos previos relacionados con las tasas de productividad de hojarasca en los mismos humedales de estudio, se propone un modelo básico conceptualcuantitativo de la dinámica producción-descomposición de hojarasca en San Andrés isla.

  12. Nivel de consumo diario de frutas y verduras en escolares con sobrepeso y obesidad del primer y segundo grado de primaria de la Institución Educativa Particular San Andrés. Lima. Mayo 2011

    OpenAIRE

    Alfaro, katherine

    2013-01-01

    Objetivos: Determinar el nivel de consumo diario de frutas y verduras en escolares con sobrepeso y obesidad de primer y segundo grado de nivel primario de la IEP San Andrés. Diseño: Estudio descriptivo, transversal, observacional y prospectivo. Institución: Institución Educativa Particular San Andrés. Participantes: Veintisiete escolares con sobrepeso y 33 con obesidad, de primer y segundo grado de nivel primaria. Intervenciones: Aplicación de formato de frecuencia de consumo de frutas y verd...

  13. Precipitation, density, and population dynamics of desert bighorn sheep on San Andres National Wildlife Refuge, New Mexico

    Science.gov (United States)

    Bender, L.C.; Weisenberger, M.E.

    2005-01-01

    Understanding the determinants of population size and performance for desert bighorn sheep (Ovis canadensis mexicana) is critical to develop effective recovery and management strategies. In arid environments, plant communities and consequently herbivore populations are strongly dependent upon precipitation, which is highly variable seasonally and annually. We conducted a retrospective exploratory analysis of desert bighorn sheep population dynamics on San Andres National Wildlife Refuge (SANWR), New Mexico, 1941-1976, by modeling sheep population size as a function of previous population sizes and precipitation. Population size and trend of desert bighorn were best and well described (R 2=0.89) by a model that included only total annual precipitation as a covariate. Models incorporating density-dependence, delayed density-dependence, and combinations of density and precipitation were less informative than the model containing precipitation alone (??AlCc=8.5-22.5). Lamb:female ratios were positively related to precipitation (current year: F1,34=7.09, P=0.012; previous year: F1,33=3.37, P=0.075) but were unrelated to population size (current year. F1,34=0.04, P=0.843; previous year: F1,33 =0.14, P=0.715). Instantaneous population rate of increase (r) was related to population size (F1,33=5.55; P=0.025). Precipitation limited populations of desert bighorn sheep on SANWR primarily in a density-independent manner by affecting production or survival of lambs, likely through influences on forage quantity and quality. Habitat evaluations and recovery plans for desert bighorn sheep need to consider fundamental influences on desert bighorn populations such as precipitation and food, rather than focus solely on proximate issues such as security cover, predation, and disease. Moreover, the concept of carrying capacity for desert bighorn sheep may need re-evaluation in respect to highly variable (CV =35.6%) localized precipitation patterns. On SANWR carrying capacity for desert

  14. Development and recent activity of the San Andrés landslide on El Hierro, Canary Islands, Spain

    Science.gov (United States)

    Klimeš, Jan; Yepes, Jorge; Becerril, Laura; Kusák, Michal; Galindo, Inés; Blahut, Jan

    2016-05-01

    Extremely voluminous landslides with a long run-out (also known as megalandslides) on oceanic volcanic islands are infrequent denudational processes on such islands. At the same time, they represent a major geological hazard that must be looked into to avoid negative consequences for the inhabitants of these islands. Their occurrence can be related to periods of intense seismo-volcanic activity, similar to that which occurred on El Hierro Island over 2011-2012. Landslides on volcanic islands are studied using onshore and offshore geological, geophysical and geomorphological records, considering their unique triggering conditions (e.g. lava intrusions, eruptive vents, magma chamber collapses). Previous work has pointed out similarities between specific cases of landslides on volcanic islands and deep-seated gravitational slope deformations (DSGSDs) which are typical in high mountain settings. Nevertheless, the methodological approaches and concepts used to investigate DSGSDs are not commonly applied on volcanic islands studies, even though their use may provide new information about the development stage, recent movements and future hazards. Therefore, this approach for studying the San Andrés landslide (SAL) on El Hierro (Canary Islands) has been developed applying a detailed morphological field mapping, an interpretation of digital elevation models, structural measurements, kinematic testing, and a precise movement monitoring system. The acquired information revealed a strong structural influence on the landslide morphology and the presence of sets of weakened planes acting as the sliding surfaces of the SAL or secondary landslides within its body. The presence of secondary landslides, deep erosive gullies, coastal cliffs and high on-shore relative relief also suggests a high susceptibility to future landslide movement. Direct monitoring on the landslide scarps and the slip plane, performed between February 2013 and July 2014, using an automated optical

  15. Identidades ambientales, un caso comparativo entre el Trapecio amazónico y el Archipiélago de San Andrés

    Directory of Open Access Journals (Sweden)

    Pablo De La Cruz

    2014-01-01

    Full Text Available A partir de la definición de identidad ambiental, el artículo compara los procesos de transformación identitaria que han tenido lugar en el Trapecio amazónico colombiano y en el Archipiélago de San Andrés, por cuanto son dos casos de redefinición histórica de la etnicidad con referencia al medio geográfico, al encuentro con la colombianidad, a la agudización del discurso y a las tensiones que los capitales y los agentes institucionales generan en torno a lo tradicional. Se analiza el creciente turismo, la influencia de las agencias de cooperación y sus efectos en el desplazamiento de lo sagrado hacia una “cultura teatral”.

  16. Space schemes of ecological zonation and morphology of the atolls lagoons and reef complex of an oceanic archipelago of the Caribbean: San Andres and Providence (Colombia)

    International Nuclear Information System (INIS)

    Diaz M, Juan Manuel

    2005-01-01

    The oceanic atolls and reef-complexes of the Archipelago of San Andres and Providencia exhibit semi-enclosed to rather open lagoon basins, where various characteristic bottom habitats occur. Certain areas of the lagoon floor are covered by sediments, being in some settings vegetated by algae or sea grass, and other areas by coralline framework of different types according to the composition and dominance of coral species and to their morphology and level of reef development. This study seeks to determine the spatial distribution patterns of lagoon bottom habitats based on the analysis of gradients of most relevant physical factors. Patterns in the occurrence and abundance of most habitats became evident in relation with wave-energy level, water depth, and the occurrence of islands. Some morphological reef types are oriented in a preferential direction and show spatial arrangements of development that are presumably related to prevailing current speed and direction and wave exposure

  17. Narcotráfico, violencia y crisis social en el Caribe insular colombiano: El caso de la isla de San Andrés en el contexto del Gran Caribe Drug Traffiking, Violence and the Social Crisis in Colombian Caribbean Islands: The Case of San Andrés Island in the Context of the Great Caribbean

    Directory of Open Access Journals (Sweden)

    Silvia Mantilla

    2011-06-01

    Full Text Available El presente artículo tiene por objetivo presentar un diagnóstico preliminar de la magnitud del tráfico de drogas, sus dinámicas, modalidades, y las condiciones sociales y económicas que favorecen el desarrollo de este negocio ilegal en la isla de San Andrés (Colombia. El análisis se desarrolla, no obstante, en el marco de la condición histórica y natural de "zona de tránsito" de drogas, armas y otros recursos ilegales, que se le atribuye a la región del Gran Caribe, entendida como un continuo geográfico, histórico y cultural en el que se observan patrones comunes en materia de amenazas a la seguridad, la geopolítica de las relaciones con Estados Unidos y los efectos sociales y económicos derivados del flagelo del narcotráfico. En este sentido, el caso de la isla de San Andrés (Colombia se examina más como parte de la dinámica insular gran caribeña que como parte de las tendencias propias del negocio en la Colombia continental, lo que permite, sin embargo, establecer las conexiones entre ambos espacios regionales -el insular y el continental- y, a la vez, evaluar el impacto regional del fenómeno a partir de las conexiones ilegales que desde el archipiélago se establecen con algunos países vecinos del Gran Caribe. Finalmente, se sostiene la hipótesis de que el fenómeno del narcotráfico se instala en la isla como resultado de factores geohistóricos, culturales y socioeconómicos que en conjunto han determinado la participación activa de distintos sectores de la sociedad en este negocio ilegal.The objective of thispaper is to present a preliminary diagnosis of the magnitude, dynamics, and modalities of drug trafficking, together with the social and economic conditions that support the development of this illegal activity in the island of San Andres (Colombia. Analysis is conducted within a framework that identifies this trafficking zone as a natural and historic corridor for trade in weapons, drugs, and other illicit

  18. Proyecto de un servicio funcional a prestar en una biblioteca universitaria: “El Servicio de Información Departamental” de la Biblioteca Max von Buch (Universidad de San Andrés = Project of a functional service to be provided in an university library: "The Departmental Information Service" of the Max von Buch Library (Universidad de San Andrés

    Directory of Open Access Journals (Sweden)

    Moira Guppy

    2001-06-01

    Full Text Available Este trabajo –elaborado para el Seminario “La organización de los Servicios al Público en la Biblioteca” (UBA, 1998- describe el proyecto de un servicio a desarrollar en la Biblioteca Max von Buch de la Universidad de San Andrés. El “Servicio de Información Departamental” ofrecerá a los docentes e investigadores acceso a los recursos disponibles dentro de su área temática (Internet, bases de datos, índices de artículos de publicaciones periódicas, revistas en texto completo, series estadísticas, etc. Estará elaborado en dos formatos: un cd-rom actualizado periódicamente, y una página Web en línea especialmente diseñada. Con la implementación de este servicio se logrará un gran ahorro de tiempo en la búsqueda, análisis, tratamiento y difusión de la información destinada a la investigación académica = This paper –presented at the seminary “Public Services Organization at the Library”- describes a project to be developed at the Max von Buch Library, Universidad de San Andrés. The “Academic Information Service” would be design to provide access to researchers and faculty to all the resources available whithin each discipline and research area in the Internet, databases, periodical indexes, full text periodicals, statistical data, etc. They will gain access to it from a cd-rom which would be updated periodically, and a web page specially designed. The implementation of this project would provide faculty with qualified information along with considerable time saving in their researches.

  19. Natural factors and antropics and their relationship with the density of colonies of Melipona beecheii in five vegetable formations of the valley San Andres

    Directory of Open Access Journals (Sweden)

    Katiuska Ravelo Pimentel

    2014-12-01

    Full Text Available It is evaluated the influence of natural factors and antropics on the density of colonies of Melipona beecheii in forest five vegetable formations of the solid one of the valley San Andrés, through surveys to residents and workers of the area, as well as the observations and samplings carried out in the studied vegetable formations. The following factors were studied: rocosity, vegetable covering, flourished plants, height of the entrance hole and the man's activity; being determined that the density of beehives has been affected fundamentally by factors antropics, having this its biggest incidence in the gallery forests, being this the most affected one. The pruning of trees, the naturalness of the forests and their access affect the population's conservation considerably under natural conditions, what demonstrates that this it is the main factor that locates in extirpation danger to the species in the study area. In turn the density of colonies keeps direct relationship with the other analyzed factors, since the same ones depend on the trees for the location of its nests, of the time in that the plants flourish for its feeding and of the holes found in the rocks, so much for the making of its colonies like it stops its establishment and reproduction.

  20. El fantasma de la puta-peluquera: Género, trabajo y estilistas trans en Cali y San Andrés Isla, Colombia

    Directory of Open Access Journals (Sweden)

    Jeanny Lucero Posso

    Full Text Available Resumen: A través de un uso crítico de la perspectiva de la interseccionalidad, la investigación etnográfica y exploratoria analiza las imbricaciones del género, la clase social, la etnicidad y la sexualidad en las trayectorias laborales de un conjunto de estilistas transfemeninas en Santiago de Cali y San Andrés Isla, Colombia. Las distancias sociales que se construyen entre diferentes actores (estilistas gais, estilistas de clase alta blancos heterosexuales, personas raizales heterosexuales y la clientela cisgénero producen de manera específica los sentidos otorgados al trabajo en las peluquerías y sus fronteras difusas con la prostitución. Si por un lado el efecto de clase y la dominación cisgenerista imposibilitan el ascenso social de las mujeres trans caleñas, el tabú heterosexista del sistema étnico prohíbe y niega las feminidades trans como parte de la identidad raizal.

  1. Descripción morfoagronómica de materiales de plátano (Musa AAB, ABB y banano (Musa AAA cultivados en San Andrés Isla Morpho-agronomic Description of Plantain (Musa AAB, ABB and Banana (Musa AAA Materials Grown in San Andres Island

    Directory of Open Access Journals (Sweden)

    Oscar Javier Parra Pachón

    2009-10-01

    Full Text Available Durante el primer semestre de 2005 se estudiaron los cultivares de plátano y banano en fincas y parcelas de 15 agricultores típicos participantes en programas conjuntos de la Secretaría de Agricultura y Pesca de San Andrés Isla y de la Universidad Nacional de Colombia sede Caribe. A partir de descriptores de INIBAP, IPGRI y CIRAD y revisiones bibliográficas.se describen morfológicamente los materiales de Musa cultivados en la Isla, así como las prácticas de los productores isleños, Se identificaron cuatro clones del subgrupo plátano (Musa AAB: un Hartón (‘Horse’ y tres Dominico-Hartón (‘Tallo Negro’, ‘Tallo Blanco’ y ‘Cincuenta’ del subgrupo ABB se hallaron un material de Bluggoe (‘Boscó’ y un Felipita. El subgrupo banano AAA presentó dos materiales Gros Michel (denominados Común y Chino y uno de banano (Rojo. El plátano tiene gran importancia para los agricultores de la Isla, siendo el Boscó el clon más aceptado entre consumidores por su adaptación a las condiciones edafológicas y climáticas. El banano es menos cultivado; ya que los suelos, el clima y las enfermedades como sigatoka negra, condicionaron el desarrollo de clones. El trabajo sugiere prácticas de fácil implementación que podrían aumentar la producción en los sistemas de huerto mixto tropical que predominan en la Isla.During the first semester, 2005 we studied the plantain and banana cultivars in small farms of 15 volunteer regular producers, who were participating in joint programs of the Agriculture and Fisheries Secretariat of San Andres Island and the Colombian National University Caribbean Headquarters. We described morphologically the Musa cultivars identified in the island, as well as agricultural practices of the island producers, using the INIBAP, IPGRI and CIRAD (1996 descriptors and bibliographical reviews. We identified four clones within the plantain sub-group Musa AAB: a Horn type and three French-Horn; and within the ABB

  2. Valoración del servicio ambiental hidrológico en el sector doméstico de San Andrés Tuxtla, Veracruz, México

    OpenAIRE

    Ana Lid del Ángel Pérez; Andrés Rebolledo Martínez; José Alfredo Villagómez Cortés; Rigoberto Zetina Lezama

    2009-01-01

    Entre las iniciativas de conservación en México, existe un programa de pago por servicios ambientales en áreas de gran importancia por sus valores ecológicos. Un caso es el de San Andrés Tuxtla, Veracruz, donde el pago no representa una opción económica sostenible a los dueños de predios, por lo que deberá incorporarse también el reconocimiento social. El objetivo del trabajo fue obtener el valor del bosque y paisajes alternativos en la población que recibe sus beneficios en forma de agua. Se...

  3. Play Analysis and Digital Portfolio of Major Oil Reservoirs in the Permian Basin: Application and Transfer of Advanced Geological and Engineering Technologies for Incremental Production Opportunities

    Energy Technology Data Exchange (ETDEWEB)

    Shirley P. Dutton; Eugene M. Kim; Ronald F. Broadhead; Caroline L. Breton; William D. Raatz; Stephen C. Ruppel; Charles Kerans

    2004-01-13

    A play portfolio is being constructed for the Permian Basin in west Texas and southeast New Mexico, the largest onshore petroleum-producing basin in the United States. Approximately 1,300 reservoirs in the Permian Basin have been identified as having cumulative production greater than 1 MMbbl (1.59 x 10{sup 5} m{sup 3}) of oil through 2000. Of these significant-sized reservoirs, approximately 1,000 are in Texas and 300 in New Mexico. There are 32 geologic plays that have been defined for Permian Basin oil reservoirs, and each of the 1,300 major reservoirs was assigned to a play. The reservoirs were mapped and compiled in a Geographic Information System (GIS) by play. The final reservoir shapefile for each play contains the geographic location of each reservoir. Associated reservoir information within the linked data tables includes RRC reservoir number and district (Texas only), official field and reservoir name, year reservoir was discovered, depth to top of the reservoir, production in 2000, and cumulative production through 2000. Some tables also list subplays. Play boundaries were drawn for each play; the boundaries include areas where fields in that play occur but are smaller than 1 MMbbl (1.59 x 10{sup 5} m{sup 3}) of cumulative production. Oil production from the reservoirs in the Permian Basin having cumulative production of >1 MMbbl (1.59 x 10{sup 5} m{sup 3}) was 301.4 MMbbl (4.79 x 10{sup 7} m{sup 3}) in 2000. Cumulative Permian Basin production through 2000 was 28.9 Bbbl (4.59 x 10{sup 9} m{sup 3}). The top four plays in cumulative production are the Northwest Shelf San Andres Platform Carbonate play (3.97 Bbbl [6.31 x 10{sup 8} m{sup 3}]), the Leonard Restricted Platform Carbonate play (3.30 Bbbl [5.25 x 10{sup 8} m{sup 3}]), the Pennsylvanian and Lower Permian Horseshoe Atoll Carbonate play (2.70 Bbbl [4.29 x 10{sup 8} m{sup 3}]), and the San Andres Platform Carbonate play (2.15 Bbbl [3.42 x 10{sup 8} m{sup 3}]). Detailed studies of three reservoirs

  4. Peapiiskop Andres Põderi jutlus / Andres Põder

    Index Scriptorium Estoniae

    Põder, Andres, 1949-

    2005-01-01

    Peapiiskop Andres Põderi jutlus oma ametissepühitsemise jumalateenistusel 2. veebruaril. Ilmunud ka: Põder, Andres. Pärimuste pöördepunkt : kõned ja kirjutised. - Tallinn : Kunst, 2007, 107-112

  5. La Biblioteca Max von Buch de la Universidad de San Andrés y sus investigadores: Segunda parte de Un estudio de las necesidades de información, hábitos y características de Investigadores en Humanidades y Ciencias Sociales The Max von Buch library of the Universidad de San Andres and its researchers: Second part of A study of the information needs, habits and characteristics of Humanities and Social Science Researchers

    Directory of Open Access Journals (Sweden)

    Irene Münster

    2003-12-01

    Full Text Available Tal como fue mencionado en el artículo anterior el presente estudio fue elaborado con el propósito de entender e identificar las necesidades, el proceso de búsqueda de información, las características y los hábitos de los investigadores en Humanidades y Ciencias Sociales de la Universidad de San Andrés (UdeSA. En esta segunda parte del mismo se ha intentado identificar y evaluar su conducta en la Biblioteca Max von Buch de la Universidad a través del uso de los servicios que ésta les ofrece. Se ponen a consideración los resultados de una encuesta realizada, de la que se adjunta la segunda parte del formulario, con el fin de detectar sus necesidades de información.As mentioned in the previous article, the present study was conducted to understand and identify the characteristics, needs and habits of research from the Humanities and Social Sciences researchers at the Universidad de San Andres (UdeSA. This second part tries to identify and evaluate their performance at the Max von Buch library of the University through the services that it provides them. The results of the survey are presented, together with the second part of the questionnaire, with the aim of identifying information needs.

  6. Reconfiguración de alianzas políticas en contextos críticos: los caciques de San Andrés de Machaca (Pacajes, Audiencia de Charcas, siglos XV-XVII

    Directory of Open Access Journals (Sweden)

    Ariel Jorge Morrone

    2015-02-01

    Full Text Available Este trabajo explora las estrategias de reconfiguración política articuladas por los líderes étnicos de San Andrés de Machaca (actual provincia Ingavi, departamento de La Paz, Bolivia, en tres contextos críticos: la invasión incaica (a mediados del siglo xv, la sistematización del orden colonial hispánico (fines del siglo xvi y el desarrollo posterior de este sistema (primera mitad del siglo xvii. Cada situación definió nuevas reglas del juego político, ante las cuales las autoridades étnicas apelaron a una variedad de prácticas: la reorganización territorial, la asignación de recursos (de consumo y de prestigio, los rituales de negociación, la memoria genealógica y el tramado de redes personales.

  7. Narcotráfico, violencia y crisis social en el Caribe insular colombiano: El caso de la isla de San Andrés en el contexto del Gran Caribe

    Directory of Open Access Journals (Sweden)

    Silvia Mantilla

    2011-01-01

    Full Text Available El presente artículo tiene por objetivo presentar un diagnóstico preliminar de la magnitud del tráfico de drogas, sus dinámicas, modalidades, y las condiciones sociales y económicas que favorecen el desarrollo de este negocio ilegal en la isla de San Andrés (Colombia. El análisis se desarrolla, no obstante, en el marco de la condición histórica y natural de “zona de tránsito” de drogas, armas y otros recursos ilegales, que se le atribuye a la región del Gran Caribe, entendida como un continuo geográfico, histórico y cultural en el que se observan patrones comunes en materia de amenazas a la seguridad, la geopolítica de las relaciones con Estados Unidos y los efectos sociales y económicos derivados del flagelo del narcotráfico. En este sentido, el caso de la isla de San Andrés (Colombia se examina más como parte de la dinámica insular gran caribeña que como parte de las tendencias propias del negocio en la Colombia continental, lo que permite, sin embargo, establecer las conexiones entre ambos espacios regionales - el insular y el continental - y, a la vez, evaluar el impacto regional del fenómeno a partir de las conexiones ilegales que desde el archipiélago se establecen con algunos países vecinos del Gran Caribe. Finalmente, se sostiene la hipótesis de que el fenómeno del narcotráfico se instala en la isla como resultado de factores geohistóricos, culturales y socioeconómicos que en conjunto han determinado la participación activa de distintos sectores de la sociedad en este negocio ilegal.

  8. Proyecto de un servicio funcional a prestar en una biblioteca universitaria: "El Servicio de Información Departamental" de la Biblioteca Max von Buch (Universidad de San Andrés

    Directory of Open Access Journals (Sweden)

    Moira Guppy

    2001-06-01

    Full Text Available Este trabajo -elaborado para el Seminario "La organización de los Servicios al Público en la Biblioteca" (UBA, 1998- describe el proyecto de un servicio a desarrollar en la Biblioteca Max von Buch de la Universidad de San Andrés. El "Servicio de Información Departamental" ofrecerá a los docentes e investigadores acceso a los recursos disponibles dentro de su área temática (Internet, bases de datos, índices de artículos de publicaciones periódicas, revistas en texto completo, series estadísticas, etc. Estará elaborado en dos formatos: un cd-rom actualizado periódicamente, y una página Web en línea especialmente diseñada. Con la implementación de este servicio se logrará un gran ahorro de tiempo en la búsqueda, análisis, tratamiento y difusión de la información destinada a la investigación académica.This paper -presented at the seminary "Public Services Organization at the Library"- describes a project to be developed at the Max von Buch Library, Universidad de San Andrés. The "Academic Information Service" would be design to provide access to researchers and faculty to all the resources available whithin each discipline and research area in the Internet, databases, periodical indexes, full text periodicals, statistical data, etc. They will gain access to it from a cd-rom which would be updated periodically, and a web page specially designed. The implementation of this project would provide faculty with qualified information along with considerable time saving in their researches.

  9. Contabilidad y cobros de rentas en la Santa Capilla de San Andrés de Jaén. Dos siglos y medio tras la búsqueda de la eficiencia (1650-1900). (Accounting and income collection at the Santa Capilla de San Andrés in Jaén. Two and a half centuries in search of efficiency (1650-1900).

    OpenAIRE

    Lillo Criado, Juan Luis; Álvarez López, José Mª Carlos

    2006-01-01

    La Santa Capilla de San Andrés de Jaén es una institución benéfica que tiene sus orígenes en 1515 y aún pervive. Su contabilidad, establecida para la rendición de cuentas por parte del receptor, se sustentó en el método de cargo y data y en diversos libros necesarios, tales como los de hacienda, de gastos de meses o el cuaderno de no cobrados. En este trabajo, sobre la base del análisis de la enorme cantidad de datos que suministran sus cuentas entre 1650 y 1900, hemos estudiado la función de...

  10. Conocimiento sobre el fenómeno de las drogas en entre estudiantes y docentes de la Facultad de Medicina Universidad Mayor de San Andrés, La Paz, Bolivia Conhecimento sobre o fenômeno das drogas entre estudantes e docentes da Faculdade de Medicina da Universidade Mayor de San Andrés, La Paz, Bolívia Knowledge on drugs phenomenon by students and faculty from the Medical School at Universidad Mayor de San Andrés, La Paz, Bolivia

    Directory of Open Access Journals (Sweden)

    Maria del Pilar Navia-Bueno

    2011-06-01

    Full Text Available El objetivo de este estudio fue identificar el grado de conocimiento de los estudiantes y docentes de salud sobre drogas lícitas e ilícitas, relacionadas a: tipo, clasificación, acción, mecanismos, daños, consecuencias y efectos adversos además del uso y consumo. El diseño metodológico fue de "corte transversal, con una muestra de 172 estudiantes, profesores y residentes de las áreas de medicina y enfermería de la Universidad Mayor de San Andrés (UMSA, en Bolivia. Los resultados revelan que existe una debilidad en cuanto al conocimiento en relación a la clasificación de sustancias psicotrópicas de acuerdo con la estructura, propiedad química y efectos que producen en la salud, destacándose una diferencia significativa del conocimiento sobre drogas lícitas, como el alcohol y tabaco, con las drogas ilícitas. Se resalta el desconocimiento en todo el grupo estudiado sobre drogas lícitas e ilícitas, consecuencias y efectos adversos, lo que confirma la necesidad de mejorar la enseñanza en este contenido en las escuelas de salud.O objetivo deste estudo foi identificar o grau de conhecimento dos estudantes e professores da área da saúde sobre drogas lícitas e ilícitas, em relação ao tipo, classificação, mecanismos de ação, danos, consequências e efeitos adversos, decorrentes de seu consumo. Trata-se de estudo de coorte transversal, com amostra de 172 estudantes, professores e residentes das áreas de medicina e enfermagem da Universidad Mayor de San Andrés (UMSA, Bolívia. Os resultados revelam baixo nível de conhecimento dos sujeitos da investigação, relacionado à classificação de substâncias psicotrópicas, quanto à estrutura, propriedade química e efeitos que produzem na saúde, destacando-se diferença significativa entre o conhecimento sobre drogas lícitas, como álcool e tabaco, e drogas ilícitas. Ressalta-se o desconhecimento de todos os sujeitos da investigação sobre drogas lícitas e il

  11. Multiple isotopes (O, C, Li, Sr) as tracers of CO2 and brine leakage from CO2-enhanced oil recovery activities in Permian Basin, Texas, USA

    Science.gov (United States)

    Phan, T. T.; Sharma, S.; Gardiner, J. B.; Thomas, R. B.; Stuckman, M.; Spaulding, R.; Lopano, C. L.; Hakala, A.

    2017-12-01

    Potential CO2 and brine migration or leakage into shallow groundwater is a critical issue associated with CO2 injection at both enhanced oil recovery (EOR) and carbon sequestration sites. The effectiveness of multiple isotope systems (δ18OH2O, δ13C, δ7Li, 87Sr/86Sr) in monitoring CO2 and brine leakage at a CO2-EOR site located within the Permian basin (Seminole, Texas, USA) was studied. Water samples collected from an oil producing formation (San Andres), a deep groundwater formation (Santa Rosa), and a shallow groundwater aquifer (Ogallala) over a four-year period were analyzed for elemental and isotopic compositions. The absence of any change in δ18OH2O or δ13CDIC values of water in the overlying Ogallala aquifer after CO2 injection indicates that injected CO2 did not leak into this aquifer. The range of Ogallala water δ7Li (13-17‰) overlaps the San Andres water δ7Li (13-15‰) whereas 87Sr/86Sr of Ogallala (0.70792±0.00005) significantly differs from San Andres water (0.70865±0.00003). This observation demonstrates that Sr isotopes are much more sensitive than Li isotopes in tracking brine leakage into shallow groundwater at the studied site. In contrast, deep groundwater δ7Li (21-25‰) is isotopically distinct from San Andres produced water; thus, monitoring this intermitted formation water can provide an early indication of CO2 injection-induced brine migration from the underlying oil producing formation. During water alternating with gas (WAG) operations, a significant shift towards more positive δ13CDIC values was observed in the produced water from several of the San Andres formation wells. The carbon isotope trend suggests that the 13C enriched injected CO2 and formation carbonates became the primary sources of dissolved inorganic carbon in the area surrounding the injection wells. Moreover, one-way ANOVA statistical analysis shows that the differences in δ7Li (F(1,16) = 2.09, p = 0.17) and 87Sr/86Sr (F(1,18) = 4.47, p = 0.05) values of

  12. PLAY ANALYSIS AND DIGITAL PORTFOLIO OF MAJOR OIL RESERVOIRS IN THE PERMIAN BASIN: APPLICATION AND TRANSFER OF ADVANCED GEOLOGICAL AND ENGINEERING TECHNOLOGIES FOR INCREMENTAL PRODUCTION OPPORTUNITIES

    Energy Technology Data Exchange (ETDEWEB)

    Shirley P. Dutton; Eugene M. Kim; Ronald F. Broadhead; Caroline L. Breton; William D. Raatz; Stephen C. Ruppel; Charles Kerans

    2004-05-01

    The Permian Basin of west Texas and southeast New Mexico has produced >30 Bbbl (4.77 x 10{sup 9} m{sup 3}) of oil through 2000, most of it from 1,339 reservoirs having individual cumulative production >1 MMbbl (1.59 x 10{sup 5} m{sup 3}). These significant-sized reservoirs are the focus of this report. Thirty-two Permian Basin oil plays were defined, and each of the 1,339 significant-sized reservoirs was assigned to a play. The reservoirs were mapped and compiled in a Geographic Information System (GIS) by play. Associated reservoir information within linked data tables includes Railroad Commission of Texas reservoir number and district (Texas only), official field and reservoir name, year reservoir was discovered, depth to top of the reservoir, production in 2000, and cumulative production through 2000. Some tables also list subplays. Play boundaries were drawn for each play; the boundaries include areas where fields in that play occur but are <1 MMbbl (1.59 x 10{sup 5} m{sup 3}) of cumulative production. This report contains a summary description of each play, including key reservoir characteristics and successful reservoir-management practices that have been used in the play. The CD accompanying the report contains a pdf version of the report, the GIS project, pdf maps of all plays, and digital data files. Oil production from the reservoirs in the Permian Basin having cumulative production >1 MMbbl (1.59 x 10{sup 5} m{sup 3}) was 301.4 MMbbl (4.79 x 10{sup 7} m{sup 3}) in 2000. Cumulative Permian Basin production through 2000 from these significant-sized reservoirs was 28.9 Bbbl (4.59 x 10{sup 9} m{sup 3}). The top four plays in cumulative production are the Northwest Shelf San Andres Platform Carbonate play (3.97 Bbbl [6.31 x 10{sup 8} m{sup 3}]), the Leonard Restricted Platform Carbonate play (3.30 Bbbl 5.25 x 10{sup 8} m{sup 3}), the Pennsylvanian and Lower Permian Horseshoe Atoll Carbonate play (2.70 Bbbl [4.29 x 10{sup 8} m{sup 3}]), and the San Andres

  13. Fibers and cylinders of cryptomelane-hollandite in Permian bedded salt, Palo Duro Basin, Texas

    International Nuclear Information System (INIS)

    Belkin, H.E.; Libelo, E.L.

    1987-01-01

    Fibers and thin-walled, hollow cylinders of cryptomelane-hollandite have been found in both the chevron and the clear salt from various drill cores in Permian bedded salt from the Palo Duro Basin, Texas. The authors have found fibers or cylinders from only the lower San Andres Formation units 4 and 5, the upper San Andres Formation, and the Salado-Transill salt. The fibers are inorganic, light to dark reddish brown, pleochroic, highly birefringent, filamentary single crystals, < 1 to ∼ 5 μm in diameter, with length-to-diameter ratios of at least 20:1. The fibers can be straight and/or curved, can bifurcate, can form loops, waves or spirals, and can be isolated or in parallel groups. Detailed petrographic analyses show no evidence for recrystallization or deformation of the enclosing salt after fiber formation. Although the authors observations do not provide a definitive explanation for fiber origin, they suggest that the fibers grew in situ by a solid-state diffusional process at low temperatures. The cylinders are pleochroic, highly birefringent, light to dark reddish brown, hollow, thin-walled, open-ended right cylinders, having a 1- to 2-μm wall thickness and variable lengths and diameters. There also appear to be single crystals of cryptomelane-hollandite, but these are found almost entirely in fluid inclusions in the chevron and clear salt. Their presence in the primary halite suggests that they were formed contemporaneously with the chevron structure and were accidentally trapped in the fluid inclusions. The observation of cylinders partially or completely enclosed by salt stratigraphically above large fluid inclusions suggests that natural downward fluid-inclusion migration has occurred, in response to the geothermal gradient

  14. Disputas marítimas en el Caribe colombiano: la pesca de tortugas en el archipiélago de San Andrés y Providencia, 1910-1930

    Directory of Open Access Journals (Sweden)

    Sharika Crawford

    2017-10-01

    Full Text Available There has been a long history of turtle hunting in the Greater Caribbean, especially in Colombian waters around the archipelago of San Andrés and Providence. This article is focused on Colombia’s efforts to affirm its national borders and to strengthen its control over its territorial waters, and on how the new regulations that these measures entail affect turtle hunters in the Caribbean Sea. Using travel stories, newspapers from Jamaica, Colombia and the United States, as well as diplomatic correspondence, interviews and secondary sources, this study analyzes the national and regional implications of these problems. This makes it possible to conclude that the islanders, in the company of Colombian officials, attempted to defend their insular territory and its maritime borders against both real and imaginary threats. Their efforts were aimed at restricting the extraction of marine resources within the country’s territorial waters, as part of the government’s interest in reinforcing the integrity of the Colombian nation-state in the Caribbean.

  15. Innovació docent: gestió i desenvolupament d’activitats extracurriculars en l’àrea de la conservació-restauració de pintura mural. Capella de San Andrés (Sevilla-Espanya

    Directory of Open Access Journals (Sweden)

    Beatriz Prado-Campos

    2017-03-01

    Full Text Available INTRODUCCIÓ. Aquest article descriu una experiència pràctica d’innovació docent duta a terme en el grau universitari de Conservació i Restauració de Béns Culturals de la Universitat de Sevilla. MÈTODE. Les pràctiques acadèmiques descrites tenien com a objectiu fonamental contribuir activament a la formació dels alumnes i aportar-los una experiència pràctica professional real en traslladar-los del seu àmbit habitual, l’aula, a un entorn professional. RESULTATS. L’aplicació de la metodologia específica de conservació-restauració en projectes d’intervenció de pintura mural, concretament a la cúpula de l’església de San Andrés (Sevilla, va permetre que l’alumnat prengués contacte amb una realitat professional concreta, on el gran format de les pintures murals i l’aplicació de les mesures de seguretat laboral van tenir com a resultat la millora les seves destreses i habilitats pel que fa als processos propis de la seva professió. A més, va suposar una experiència d’interès per a la seva inserció laboral. DISCUSSIÓ. Es demostra, amb això, que utilitzant els recursos didàctics apropiats en el procés d’ensenyament i aprenentatge es pot ampliar la qualitat de la docència.

  16. Descripción morfoagronómica de materiales de plátano (Musa AAB, ABB y banano (Musa AAA cultivados en San Andrés Isla

    Directory of Open Access Journals (Sweden)

    Oscar Javier Parra Pachón

    2009-10-01

    Full Text Available Durante el primer semestre de 2005 se estudiaron los cultivares de plátano y banano en fincas y parcelas de 15 agricultores típicos participantes en programas conjuntos de la Secretaría de Agricultura y Pesca de San Andrés Isla y de la Universidad Nacional de Colombia sede Caribe. A partir de descriptores de INIBAP, IPGRI y CIRAD y revisiones bibliográficas.se describen morfológicamente los materiales de Musa cultivados en la Isla, así como las prácticas de los productores isleños, Se identificaron cuatro clones del subgrupo plátano (Musa AAB: un Hartón (‘Horse’ y tres Dominico-Hartón (‘Tallo Negro’, ‘Tallo Blanco’ y ‘Cincuenta’ del subgrupo ABB se hallaron un material de Bluggoe (‘Boscó’ y un Felipita. El subgrupo banano AAA presentó dos materiales Gros Michel (denominados Común y Chino y uno de banano (Rojo. El plátano tiene gran importancia para los agricultores de la Isla, siendo el Boscó el clon más aceptado entre consumidores por su adaptación a las condiciones edafológicas y climáticas. El banano es menos cultivado; ya que los suelos, el clima y las enfermedades como sigatoka negra, condicionaron el desarrollo de clones. El trabajo sugiere prácticas de fácil implementación que podrían aumentar la producción en los sistemas de huerto mixto tropical que predominan en la Isla.

  17. Descripción morfoagronómica de materiales de plátano (Musa AAB, ABB y banano (Musa AAA cultivados en San Andrés Isla

    Directory of Open Access Journals (Sweden)

    Parra Pachón Oscar Javier

    2009-12-01

    Full Text Available Durante el primer semestre de 2005 se estudiaron los cultivares de plátano y banano en fincas y parcelas de 15 agricultores típicos participantes en programas conjuntos de la Secretaría de Agricultura y Pesca de San Andrés Isla y de la Universidad Nacional de Colombia sede Caribe. A partir de descriptores de INIBAP, IPGRI y CIRAD y revisiones bibliográficas.se describen morfológicamente los materiales de Musa cultivados en la Isla, así como las prácticas de los productores isleños, Se identificaron cuatro clones del subgrupo plátano (Musa AAB: un Hartón (‘Horse’ y tres Dominico-Hartón (‘Tallo Negro’, ‘Tallo Blanco’ y ‘Cincuenta’ del subgrupo ABB se hallaron un material de Bluggoe (‘Boscó’ y un Felipita. El subgrupo banano AAA presentó dos materiales Gros Michel (denominados Común y Chino y uno de banano (Rojo. El plátano tiene gran importancia para los agricultores de la Isla, siendo el Boscó el clon más aceptado entre consumidores por su adaptación a las condiciones edafológicas y climáticas. El banano es menos cultivado; ya que los suelos, el clima y las enfermedades como sigatoka negra, condicionaron el desarrollo de clones. El trabajo sugiere prácticas de fácil implementación que podrían aumentar la producción en los sistemas de huerto mixto tropical que predominan en la Isla.

  18. Contabilidad y cobros de rentas en la Santa Capilla de San Andrés de Jaén. Dos siglos y medio tras la búsqueda de la eficiencia (1650-1900

    Directory of Open Access Journals (Sweden)

    Juan Luis Lillo Criado

    2006-07-01

    Full Text Available La Santa Capilla de San Andrés de Jaén es una institución benéfica que tiene sus orígenes en 1515 y aún pervive. Su contabilidad, establecida para la rendición de cuentas por parte del receptor, se sustentó en el método de cargo y data y en diversos libros necesarios, tales como los de hacienda, de gastos de meses o el cuaderno de no cobrados. En este trabajo, sobre la base del análisis de la enorme cantidad de datos que suministran sus cuentas entre 1650 y 1900, hemos estudiado la función de cobro de rentas del receptor y la eficiencia en el desempeño de la misma, así como la legitimación conseguida por los principales promotores de cambios en orden a su mejora. Para ello hemos incidido especialmente en los sistemas de remuneración al receptor y, en particular, en el cambio producido desde un escenario de empleo a sueldo fijo a otro de comisionista con retribución variable. Después de investigar los impagados con un sistema y otro y de relacionarlos con la evolución de las propiedades y de sus rentas, se concluye que el cambio benefició a los receptores pero no a la institución, por lo que no mejoró la eficiencia buscada.

  19. Andres Ehin Jaapanist Iirini

    Index Scriptorium Estoniae

    2006-01-01

    Andres Ehin valiti Ülemaailmse Haiku Assotsiatsiooni auliikmeks ja kirjaniku inglisekeelset luulekogu "Moose Beetle Swallow" esitleti 2005. aasta Euroopa kultuuripealinnas Corkis Iirimaal. Järgneb: Looming 2006, nr. 2, lk. 311

  20. Andres Puustusmaa esikfilm Moskva filmifestivalil / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2007-01-01

    Eestist pärit režissööril Andres Puustusmaal esilinastub 29. juunil Moskva filmifestivali raames tema esimene täispikk mängufilm, Venemaa ja Ukraina ühistöö "Armastuse punane pärl" ("Krasnõi zhemtshug ljubvi"), peaosas Oksana Fandera, operaatoriks soomlane Timo Salminen. Valmis on ka teine mängufilm "1814", mis koos eespool nimetatuga tuleb kinodesse septembris. Ka Moskva festivali kavast

  1. Santo André: Integración de Programas para Promover la Inclusión Social

    OpenAIRE

    Rosana Denaldi

    2003-01-01

    En este trabajo trataremos del programa "Santo André Más Igual", desarrollado desde 1998 en la ciudad de Santo André ubicada en la Región del Gran ABC, en la Región Metropolitana de San Pablo (RMSP) Brasil.

  2. Extinguishing a Permian World

    NARCIS (Netherlands)

    Schneebeli-Hermann, E.

    2012-01-01

    At the end of the Permian, ca. 252 Ma ago, marine and terrestrial fauna were facing the most extensive mass extinction in Earth history (Raup and Sepkoski, 1982). 80%–95% of all species on Earth, on land and in the oceans, became extinct (Benton et al., 2004) within an estimated time interval of

  3. Graafikatriennaali peapreemia Andres Talile

    Index Scriptorium Estoniae

    2001-01-01

    Tallinna XII graafikatriennaali preemiad: grand prix - Andres Tali; 3 võrdset preemiat - Janne Laine, Leonards Laganovskis, Peeter Laurits; diplomid - Lynne Allen, Lucrecia Urbano, Vladimir Tshaika, Zora Stanè, Endi Poskovic, Päivikki Kallio; EKM preemia - Tif Bitmap; Tallinna linna preemia - Ülle Marks ja Jüri Kass; eripreemiad: - J. Laine (Eesti Pank), Vive Tolli (Paletti Eesti AS), Martins Ratniksh, Juris Boiko, T. Bitmap (Balteco AS). Žürii koosseis

  4. Implementación de las tics como estrategia didáctica para generar un aprendizaje significativo de los procesos celulares en los estudiantes de grado sexto de la institución educativa San Andrés del municipio de Girardota

    OpenAIRE

    Monsalve Ochoa, Martha Lía

    2012-01-01

    Esta práctica docente se hizo con el objetivo de aplicar herramientas TIC a una serie de estudiantes de la institución educativa san Andrés de la vereda del mismo nombre del municipio de Girardota. Son jóvenes entre 11 y 15 años de escasos recursos en su mayoría, con poco apoyo de sus padres para la motivación hacia el estudio, en la institución no se cuenta con laboratorio ni material alguno para la práctica de las ciencias. No son jóvenes que le vean mucha importancia a esta área porque nin...

  5. Permian potentiometric analysis

    International Nuclear Information System (INIS)

    Devary, J.L.

    1983-09-01

    Pacific Northwest Laboratory (PNL) was requested to analyze potentiometric data from the Wolfcamp Formation of the Permian System to evaluate the recommendations by the University of Texas/Bureau of Economic Geology (UT/BEG) that additional geohydrologic boreholes be drilled into the Wolfcamp. The UT/BEG recommended that two stratigraphic and two geohydrologic borings be drilled into the Permian System during FY83 and that several shallow hydrologic tests be made in the Dockum Formation. A geostatistical technique known as kriging was applied to objectively evaluate these geohydrologic borehole recommendations. The Deaf Smith County location appears to be an excellent choice for a borehole. No high quality potentiometric data are available from Deaf Smith County and a borehole location immediately upgradient from the candidate repository site is needed. Adding this borehole location to the potentiometric data base will significantly reduce field data uncertainty near the location being studied. The Swisher County location does not appear to be the best choice. High quality data values H2206 and H2360 are located immediately upgradient from the proposed repository site. The best placement of additional geohydrological boreholes in the Wolfcamp Formation depends strongly upon the proposed repository location. The variability of the potentiometric data causes estimation errors to rapidly increase away from locations of field measurements. Suggested locations for additional boreholes for the Deaf Smith investigations are in northwest Randall or central Potter Counties. Ideal borehole locations for the Swisher county studies appear to be in southeast Randall and Armstrong Counties

  6. Andres Rõhu: kujundaja metsast / Andres Rõhu ; intervjueerinud Kaarel Kressa

    Index Scriptorium Estoniae

    Rõhu, Andres, 1965-

    2010-01-01

    Maalikunstnik Andres Rõhu sellest, kuidas temast sai raamatute kujundaja, parematest enda kujundatud raamatutest, südamelähedasematest eesti raamatukujundajatest, maal elamise eelistest. Loetletud A, Rõhu kujundatud teoseid

  7. Maailmaparandajad / Ole Ry, Susanne Andres

    Index Scriptorium Estoniae

    Ry, Ole

    2012-01-01

    Terapeudid Ole Ry ja Susanne Andres räägivad Dr David Berceli loodud TRE (Tension & Trauma Releasing Exercises) harjutuste kasutamise kogemusest erinevate psüühiliste traumade ja pingetega klientide tervise parandamisel

  8. Petrophysical Properties of the Yeso, Abo and Cisco Formations in the Permian Basin in New Mexico, U.S.A

    Science.gov (United States)

    Mann, Griffin

    The area that comprises the Northwest Shelf in Lea Co., New Mexico has been heavily drilled over the past half century. The main target being shallow reservoirs within the Permian section (San Andres and Grayburg Formations). With a focus shifting towards deeper horizons, there is a need for more petrophysical data pertaining to these formations, which is the focus of this study through a variety of techniques. This study involves the use of contact angle measurements, fluid imbibition tests, Mercury Injection Capillary Pressure (MICP) and log analysis to evaluate the nano-petrophysical properties of the Yeso, Abo and Cisco Formation within the Northwest Shelf area of southeast New Mexico. From contact angle measurements, all of the samples studied were found to be oil-wetting as n-decane spreads on to the rock surface much quicker than the other fluids (deionized water and API brine) tested. Imbibition tests resulted in a well-connected pore network being observed for all of the samples with the highest values of imbibition slopes being recorded for the Abo samples. MICP provided a variety of pore structure data which include porosity, pore-throat size distributions, permeability and tortuosity. The Abo samples saw the highest porosity percentages, which were above 15%, with all the other samples ranging from 4 - 7%. The majority of the pore-throat sizes for most of the samples fell within the 1 - 10 mum range. The only exceptions to this being the Paddock Member within the Yeso Formation, which saw a higher percentage of larger pores (10 - 1000mum) and one of the Cisco Formation samples, which had the majority of its pore sizes fall in the 0.1 - 1 mum range. The log analysis created log calculations and curves for cross-plot porosity and water saturation that were then used to derive a value for permeability. The porosity and permeability values were comparable with those measured from our MICP and literature values.

  9. Geim, Prof. Sir Andre Konstantin

    Indian Academy of Sciences (India)

    Fellow Profile. Elected: 2015 Honorary. Geim, Prof. Sir Andre Konstantin FRS. Date of birth: 21 October 1958. Address: Royal Society Research Professor, University of Manchester, Oxford Road, Manchester M13 9PL, UK Contact: Office: (+44-161) 275 4120. Email: geim@manchester.ac.uk. YouTube; Twitter; Facebook ...

  10. Suursaadik Andres Talvik : Prantsusmaa ei ole euroliidu laienemise pooldaja / Andres Talvik ; interv. Marianne Mikko

    Index Scriptorium Estoniae

    Talvik, Andres, 1947-

    2002-01-01

    Eesti suursaadik Prantsusmaal Andres Talvik Prantsusmaa presidendivalimistest, paremäärmuslase Jean-Marie Le Peni pääsemisest selle II vooru, prantslaste vastuseisust EL-i laienemisele, Prantsuse-Saksa suhetest. Andres Talviku elulooandmeid

  11. Vulkaner andre steder i Solsystemet

    DEFF Research Database (Denmark)

    Haack, Henning

    2007-01-01

    Jupiters måne, Io, og man regner man med at Venus og formentlig også Mars stadig er vulkansk aktive. Ved at rette blikket ud i solsystemet har vi  mulighed for at studere vulkansk aktivitet under helt anderledes betingelser end her på Jorden. Hvad sker der f.eks., hvis tyngdekraften er svagere, eller...... planetens overflade måske er gloende varm? Vulkanerne andre steder i Solsystemet overgår på mange måder dem på Jorden. Venus er den planet i solsystemet, der har flest vulkaner, Mars har de største og højeste vulkaner, asteroiden Vesta har de ældste, og Jupiters måne Io har de mest aktive vulkaner i...

  12. Permian of Southeast Asia: an overview

    Energy Technology Data Exchange (ETDEWEB)

    Fontaine, H.

    2002-07-01

    Permian rocks are widely distributed throughout Southeast Asia. Because of the tropical-equatorial climate the rocks are commonly deeply weathered and covered by dense vegetation over much of the region. Elsewhere, Permian rocks are well exposed and easy to access, particularly where limestone outcrops have weathered to form spectacular, castellated, tower karst. Many limestone outcrops, containing abundant fusulinaceans, were recognized early on to be of Permian age, but many outcrops without fusulinaceans, erroneously assigned to the Permian, were found subsequently to be of Triassic age, and more careful studies have established the Permian age of rocks of other lithologies. Different depositional environments are represented by the Permian deposits in various parts of the region. Massive limestones, throughout the region represent extensive carbonate platforms; local occurrences of thick bedded cherts indicate deposition in deep marine environments, coal, bauxite and clastic sediments with vertebrate remains in North Vietnam and Laos indicate deposition in a continental environment, and pebbly mudstones in Myanmar, Peninsular Thailand, northwest Malaysia and Sumatra, are considered to have been formed in a glacial environment. Volcanic rocks are not found in northwest Peninsular Malaysia and Peninsular Thailand, but are extensively developed in North Vietnam, Sumatra, the eastern Malay Peninsula and Timor. Fossils are often prolific in Permian sediments, with fusulinaceans, for example, occurring in large numbers in many limestone outcrops. Age-diagnostic fossils demonstrate that the whole of the Permian is represented in different areas of Southeast Asia. Fossil faunal and floral assemblages have been used to establish climatic conditions and environments of deposition, to define distinct crustal blocks and to provide the basis for reconstructing the palaeogeography during Permian times.

  13. Permian of Southeast Asia: an overview

    Science.gov (United States)

    Fontaine, Henri

    2002-08-01

    Permian rocks are widely distributed throughout Southeast Asia. Because of the tropical-equatorial climate the rocks are commonly deeply weathered and covered by dense vegetation over much of the region. Elsewhere, Permian rocks are well exposed and easy to access, particularly where limestone outcrops have weathered to form spectacular, castellated, tower karst. Many limestone outcrops, containing abundant fusulinaceans, were early recognized to be of Permian age, but many outcrops without fusulinaceans, erroneously assigned to the Permian, were found subsequently to be of Triassic age, and more careful studies have established the Permian age of rocks of other lithologies. It is now recognized that different depositional environments are represented by the Permian deposits in various parts of the region. Massive limestones, widespread throughout the region, represent extensive carbonate platforms; local occurrences of thick bedded cherts indicate deposition in deep marine environments, coal, bauxite and clastic sediments with vertebrate remains in North Vietnam and Laos indicate deposition in a continental environment, and pebbly mudstones in Myanmar, Peninsular Thailand, northwest Malaysia and Sumatra, are considered to have been formed in a glacial environment. Volcanic rocks are absent in northwest Peninsular Malaysia and Peninsular Thailand, but are extensively developed in North Vietnam, Sumatra, the eastern Malay Peninsula and Timor. Fossils, representing many fossil groups, are often prolific in Permian sediments, with fusulinaceans, for example, occurring in astronomical numbers in many limestone outcrops. Age-diagnostic fossils demonstrate that the whole of the Permian is represented in different areas of Southeast Asia. Fossil faunal and floral assemblages have been used to establish climatic conditions and environments of deposition, to define distinct crustal blocks and to provide the basis for reconstructing the palaeogeography during Permian times.

  14. Cafe Lyon = Cafe Lyon / Andres Labi

    Index Scriptorium Estoniae

    Labi, Andres, 1977-

    2013-01-01

    Cafe Lyon (Meistri 22, Tallinn) sisekujundusest. Autorid: Janno Roos, Andres Labi, Kristel Jakobson (Ruumilabor). Prantsuse Lütseumi direktori Lauri Leesi arvamus. Disainibüroo Ruumilabor lühitutvustus

  15. Andres Noormets - olemuselt luuletaja, vormilt lavastaja / Andres Noormets ; intervjueerinud Tiiu Laks

    Index Scriptorium Estoniae

    Noormets, Andres, 1963-

    2010-01-01

    Andres Noormets endast, oma lavastustest, näitlemisest ja lavastamisest, elu mõttest, uue otsimisest oma teatritöödega, sellest, mis endiselt paelub teatris ja praegusi teatritegemisi enim mõjutab, ise kirjutamisest jm. Andres Noormetsa eluloolisi andmeid

  16. Andres Ellamaa : suurperede seostamine asotsiaalsusega mõjub koletislikult / Andres Ellamaa ; interv. Indrek Veiserik

    Index Scriptorium Estoniae

    Ellamaa, Andres, 1944-

    2008-01-01

    Vestlus doktor Andres Ellamaaga suurperede toetamisest, kunstlikust viljastamisest. Lisaks: Kuidas kommenteerite dr. Andres Ellamaa 2. juuni Postimehes ilmunud artikli järel tekkinud diskussiooni avalikkuses ja meedias? Kommenteerivad Tallinna Arstide Liidu juhatuse liige Peeter Mardna ja Jõgeva haigla juhataja Peep Põdder

  17. Elaboración y aplicación de la guía didáctica de estrategias metodológicas de motricidad fina deditos a trabajar para desarrollar la escritura en los niños y niñas de primer año de educación básica paralelo “A” del Jardín de infantes Dr. Camilo Gallegos Domínguez de la parroquia San Andrés del cantón Guano provincia de Chimborazo en el año lectivo 2013 2014.

    OpenAIRE

    Martha Cecilia, Lozano Sànchez

    2015-01-01

    Esta investigación se la realizó con los niños y niñas de primera año de Educación Básica paralelo “A”, del Jardín de Infantes Dr. Camilo Gallegos Domínguez de la Parroquia San Andrés del Cantón Guano Provincia de Chimborazo, se evidenció que existe una gran deficiencia metodológica de motricidad fina, que se evidencia en el momento de ejecutar sus rasgos caligráficos, el objetivo fundamental es ayudar al niño a superar este problema. Se ha buscado información en relación a las dos variables,...

  18. PT symmetric Aubry–Andre model

    International Nuclear Information System (INIS)

    Yuce, C.

    2014-01-01

    PT symmetric Aubry–Andre model describes an array of N coupled optical waveguides with position-dependent gain and loss. We show that the reality of the spectrum depends sensitively on the degree of quasi-periodicity for small number of lattice sites. We obtain the Hofstadter butterfly spectrum and discuss the existence of the phase transition from extended to localized states. We show that rapidly changing periodical gain/loss materials almost conserve the total intensity. - Highlights: • We show that PT symmetric Aubry–Andre model may have real spectrum. • We show that the reality of the spectrum depends sensitively on the degree of disorder. • We obtain the Hofstadter butterfly spectrum for PT symmetric Aubry–Andre model. • We discuss that phase transition from extended to localized states exists

  19. PT symmetric Aubry–Andre model

    Energy Technology Data Exchange (ETDEWEB)

    Yuce, C., E-mail: cyuce@anadolu.edu.tr

    2014-06-13

    PT symmetric Aubry–Andre model describes an array of N coupled optical waveguides with position-dependent gain and loss. We show that the reality of the spectrum depends sensitively on the degree of quasi-periodicity for small number of lattice sites. We obtain the Hofstadter butterfly spectrum and discuss the existence of the phase transition from extended to localized states. We show that rapidly changing periodical gain/loss materials almost conserve the total intensity. - Highlights: • We show that PT symmetric Aubry–Andre model may have real spectrum. • We show that the reality of the spectrum depends sensitively on the degree of disorder. • We obtain the Hofstadter butterfly spectrum for PT symmetric Aubry–Andre model. • We discuss that phase transition from extended to localized states exists.

  20. Prolonged Permian Triassic ecological crisis recorded by molluscan dominance in Late Permian offshore assemblages.

    Science.gov (United States)

    Clapham, Matthew E; Bottjer, David J

    2007-08-07

    The end-Permian mass extinction was the largest biotic crisis in the history of animal life, eliminating as many as 95% of all species and dramatically altering the ecological structure of marine communities. Although the causes of this pronounced ecosystem shift have been widely debated, the broad consensus based on inferences from global taxonomic diversity patterns suggests that the shift from abundant brachiopods to dominant molluscs was abrupt and largely driven by the catastrophic effects of the end-Permian mass extinction. Here we analyze relative abundance counts of >33,000 fossil individuals from 24 silicified Middle and Late Permian paleocommunities, documenting a substantial ecological shift to numerical dominance by molluscs in the Late Permian, before the major taxonomic shift at the end-Permian mass extinction. This ecological change was coincident with the development of fluctuating anoxic conditions in deep marine basins, suggesting that numerical dominance by more tolerant molluscs may have been driven by variably stressful environmental conditions. Recognition of substantial ecological deterioration in the Late Permian also implies that the end-Permian extinction was the climax of a protracted environmental crisis. Although the Late Permian shift to molluscan dominance was a pronounced ecological change, quantitative counts of 847 Carboniferous-Cretaceous collections from the Paleobiology Database indicate that it was only the first stage in a stepwise transition that culminated with the final shift to molluscan dominance in the Late Jurassic. Therefore, the ecological transition from brachiopods to bivalves was more protracted and complex than their simple Permian-Triassic switch in diversity.

  1. Despedida al maestro Arturo Andrés Roig (1922 – 2012

    Directory of Open Access Journals (Sweden)

    Enrique Dussel

    2015-07-01

    Full Text Available En ocasión del fallecimiento de Arturo Andrés Roig (Doctor Honoris Causa por las Universidades Nacional de Río Cuarto, Argentina; Nacional de San Luis, Argentina; Autónoma de Managua, Nicaragua. Profesor Honorario en las Universidades Nacional del Comahue -Argentina-, y Andina Simón Bolívar -Ecuador- queremos sumarnos a la larga serie de homenajes que ha recibido. Para ello, reproducimos aquí tres memoriales dedicados al maestro por filósofos americanos.

  2. Andre on alati tantsida tahtnud / Anu Mõttus

    Index Scriptorium Estoniae

    Mõttus, Anu

    2009-01-01

    Koolitantsu maakonnavoorud on peetud. Igast maakonnast pääsevad piirkonnavooru kuni pooled tantsud. Umbes sama edasipääsuprotsent on ka Andre Laine tantsudel, kelle koolitantsu vaimustus algas Kanepi Gümnaasiumi õpilasena ja kes praeguseks on selle gümnaasiumi tantsupedagoog

  3. André Petermann (1922-2011)

    CERN Multimedia

    2012-01-01

    The CERN theory community mourns the loss of André Petermann, one of the first members of the Theory Division, who passed away last August in his 89th year. He pioneered, together with his advisor Stueckelberg, the renormalization group, one of the fundamental ideas in quantum field theory that underlies the modern theory of phase transitions as well as asymptotic freedom and the quest for unification of all the particle interactions.   André was among the very first staff members of CERN, which at the beginning was a small group of theorists at the Niels Bohr Institute in Copenhagen, headed by Bohr himself.  When the group moved to Geneva, they first occupied a set of barracks in Cointrin, next to the airport, before moving to the University of Geneva, and then finally settling on the Meyrin site. André was our last direct contact with our nomadic origins. The importance of André’s early work on the renormalization group was recogn...

  4. André Rousset 1930-2001

    CERN Multimedia

    2001-01-01

    André Rousset in 1962 , seen working on BP3, one of the earlier bubble chambers, with André Lagarrigue (standing). André Rousset died on 1 July at the age of 70. For those who lived through the Gargamelle epic, his name is linked with the success of the great bubble chamber that made possible the 1973 discovery of neutral currents. A graduate of Paris's famous Ecole Polytechnique which produced so many great names in particle physics, André Rousset, a native of southern France, joined Louis Leprince-Ringuet's famous laboratory at the Polytechnique in 1954. Among other topics, Rousset played a part in the cosmic ray experiments at the Pic du Midi in the Pyrénées and designed heavy liquid bubble chambers. A Professor at the Ecole des Mines from 1960 onwards, he became deputy director of Louis Leprince-Ringuet's laboratory in 1964. In 1969 he came to CERN where, logically, he headed the TCL group in charge of heavy liquid bubble chambers. In thi...

  5. Igale inimesele oma inspektor? / Andre Nõmm

    Index Scriptorium Estoniae

    Nõmm, Andre

    2007-01-01

    Finantsinspektsiooni finantsjärelevalve divisjoni juhataja Andre Nõmm on seisukohal, et finantsinspektsiooni ülesanne ei ole valvata iga kodaniku finantsriski maandamist, vaid vastutust peab kandma iga inimene ise. Ometi on riigi eesmärk tõsta oma kodanike teadlikkust laenuturul valitsevatest ohtudest

  6. Eesti fond rahastab Vene infotehnoloogiat / Andres Reimer

    Index Scriptorium Estoniae

    Reimer, Andres

    2006-01-01

    Martinson Trigon Venture Partners (MTVP) loob uue tarkvarainvesteeringute fondi, mis viib endise NSVL-i alale kuni 780 miljonit krooni, fond võtab sihiks kümmekond uut ettevõtet. MTVP esimese fondi investeeringutest. Fondide juhi Andres Susi selgitusi. Lisa: Martinson Trigon Venture Partners osalusega firmad; Vt. samas: Moskvas pole raha ja geeniused kohtunud

  7. Palynology and stratigraphy preliminary study and the perforation 313/1, lower Permian. Uruguay

    International Nuclear Information System (INIS)

    Beri, A; Daners, G.; Spoturno, J.

    1998-01-01

    The palynomorphs in the bore 313/1 of the Direccion Nacional de Mineria y Geologia are analyzed. Twenty three samples were processed, and only 9 were fertile. The lithologies correspond to sandstones of variable grain size, to mudstone and to diamictite, all of them assigned to the San Gregorio and Tres Islas Fms. The most abundant genera of sporare are essentially represented by monosaccate grains. Bisaccate and striated grains are very scare. The palynoflora is comparable with those studied in Brazil in the Fm Rio Bonito. Therefore, it is proposed that the sediments studied were deposited in the early Permian. (author)

  8. The Upper Permian in the Netherlands

    NARCIS (Netherlands)

    Visser, W.A.

    1955-01-01

    The Upper Permian in the Netherlands, as known from borehole data, is deposited in a mainly evaporitic facies north of the Brabant and Rhenish Massifs. In the extreme south (Belgian Campine, de Peel) a near-shore facies of reef dolomites and elastics occurs. In the western and central Netherlands

  9. Permian macro- and miofloral diversity, palynodating and ...

    Indian Academy of Sciences (India)

    The order Glossopteridales is highly diversi- fied with 23 taxa and the genus Glossopteris, with 22 species, dominates the flora. The mioflora of this colliery is represented by two distinct palynoassemblages. The palynoassemblage-III is correlatable with the palynoflora of Early Permian (Artinskian) Lower Barakar Formation.

  10. The terminal Permian in European Russia: Vyaznikovian Horizon, Nedubrovo Member, and Permian-Triassic boundary

    Science.gov (United States)

    Lozovsky, V. R.; Balabanov, Yu. P.; Karasev, E. V.; Novikov, I. V.; Ponomarenko, A. G.; Yaroshenko, O. P.

    2016-07-01

    The comprehensive analysis of the data obtained on terrestrial vertebrata, ostracods, entomologic fauna, megaflora, and microflora in deposits of the Vyaznikovian Horizon and Nedubrovo Member, as well as the paleomagnetic data measured in enclosing rocks, confirms heterogeneity of these deposits. Accordingly, it is necessary to distinguish these two stratons in the terminal Permian of the East European Platform. The combined sequence of Triassic-Permian boundary deposits in the Moscow Syneclise, which is considered to be the most complete sequence in the East European Platform, is as follows (from bottom upward): Vyatkian deposits; Vyaznikovian Horizon, including Sokovka and Zhukovo members; Nedubrovo Member (Upper Permian); Astashikha and Ryabi members of the Vokhmian Horizon (Lower Triassic). None of the sequences of Permian-Triassic boundary deposits known in the area of study characterizes this sequence in full volume. In the north, the Triassic deposits are underlain by the Nedubrovo Member; in the south (the Klyazma River basin), the sections are underlain by the Vyaznikovian Horizon. The Permian-Triassic boundary adopted in the General Stratigraphic Scale of Russia for continental deposits of the East European platform (the lower boundary of the Astashikha Member) is more ancient than the one adopted in the International Stratigraphic Chart. The same geological situation is observed in the German Basin and other localities where Triassic continental deposits are developed. The ways of solving this problem are discussed in this article.

  11. Exploratory shaft facility preliminary designs - Permian Basin

    International Nuclear Information System (INIS)

    1983-09-01

    The purpose of the Preliminary Design Report, Permian Basin, is to provide a description of the preliminary design for an Exploratory Shaft Facility in the Permian Basin, Texas. This issue of the report describes the preliminary design for constructing the exploratory shaft using the Large Hole Drilling method of construction and outlines the preliminary design and estimates of probable construction cost. The Preliminary Design Report is prepared to complement and summarize other documents that comprise the design at the preliminary stage of completion, December 1982. Other design documents include drawings, cost estimates and schedules. The preliminary design drawing package, which includes the construction schedule drawing, depicts the descriptions in this report. For reference, a list of the drawing titles and corresponding numbers are included in the Appendix. The report is divided into three principal sections: Design Basis, Facility Description, and Construction Cost Estimate. 30 references, 13 tables

  12. Andres Võsand: hakkan ilmselt elukutseliseks kunstnikuks / Andres Võsand ; intervjueerinud Veiko Visnapuu

    Index Scriptorium Estoniae

    Võsand, Andres, 1966-

    2010-01-01

    Intervjuu Saksaamaal elava tennisisti Andres Võsandiga, kelle maalinäitus "Värvireisid" on avatud Kadriorus Kastellaanimaja Galeriis 30.10-28.11.2010. Tegelemisest maalikunstiga, näitusest, reisidest inspireeritud loomingust, tööst tennisetreenerina, tennisekarjäärist. Andmeid A. Võsandi elukäigu kohta

  13. Late Permian (Zechstein) carbonate-facies maps, the Netherlands

    NARCIS (Netherlands)

    Geluk, M.C.

    2000-01-01

    The Late Permian Zechstein carbonates in the Southern Permian Basin were deposited under marine conditions. The carbonates form part of a largely progradational infill, with a gradual northward facies shift. The paleogeography of the Zechstein carbonate deposits has been reviewed recently on the

  14. Faunal migration into the Late Permian Zechstein Basin

    DEFF Research Database (Denmark)

    Sørensen, Anne Mehlin; Håkansson, Eckart; Stemmerik, Lars

    2007-01-01

    Late Permian bryozoans from the Wegener Halvø, Ravnefjeld and Schuchert Formations in East Greenland have been investigated. 14 genera are recognised.      Integration of the new bryozoan data from the Upper Permian of East Greenland with data on the distribution of Permian bryozoans along...... the northern margin of Pangea is used to test hypotheses concerning Late Palaeozoic evolution of the North Atlantic region. During the Permian, the Atlantic rift system formed a seaway between Norway and Greenland from the boreal Barents Shelf to the warm and arid Zechstein Basin. This seaway is considered...... to be the only marine connection to the Zechstein Basin and therefore the only possible migration route for bryozoans to enter the basin. The distribution of Permian bryozoans is largely in keeping with such a connection from the cool Barents Shelf past the East Greenland Basin to the warm Zechstein Basin...

  15. Andrés Chiautla, Estado de México

    Directory of Open Access Journals (Sweden)

    J. Tiburcio-Rosales

    2007-01-01

    Full Text Available En el presente trabajo se realizó un Ordenamiento Ecológico Territorial del municipio de San Andrés Chiautla. La metodología empleada fue la propuesta por el INE-SEMARNAP, la cual emplea la variante de los sistemas complejos asociados a la metodología de SEDUE, utilizando las variantes del Levantamiento Fisiográfico realizado a través del SIG para la caracterización de los subsistemas natural y socioeconómico; así como la utilización de los términos de referencia para las transformaciones y permanencias del uso del suelo obtenidos del Programa Estatal de Ordenamiento Territorial elaborado por SEDESOL. Se generaron ocho productos como resultado de la etapa de caracterización del subsistema natural y socioeconómico los cuales son: la calidad ecológica de los recursos naturales, la fragilidad natural, los cambios del uso del suelo y vegetación, la presión de la población sobre su entorno natural, la distribución de la población, los niveles de bienestar de la población, la dinámica espacial y temporal de la población y los aspectos socioeconómicos. Después de la etapa de caracterización se llevó a cabo la integración del subsistema natural para obtener la estabilidad ambiental y las políticas ambientales. Como resultado final se obtuvieron las tablas de uso, políticas y criterios para normalizar la utilización del espacio territorial.

  16. New discovery of Permian belemnoids in Hunan

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Z.; Su, L. [Xiangtan Mining Institute, Hunan (China). Dept. of Geology

    1999-06-01

    The fossil belemnoids described here were discovered from the Upper Permian Dalong Formation in Hunan province. There are nearly one hundred specimens, including one genus and one species. The diagnosis of the species is as follows: Genus: palaeobelemnopsis Chen, 1982; Species: Palaeobelemnosis sp. The guard is small and slender, about six times the maximum transverse diameter in length, with outline slightly hastate or fusiform. The maximum transverse diameter locates the border between the apical region and the stem region, and is nearly cycloid or slightly compressed in the anterior of the alveolus. The apical angle is about 70{degree}. The median ventral groove is wide and shallow, and is sometimes absent. Two dorso-lateral grooves are apparent and extending from the alveolus to the apex. The Phragmocone is slender. The outer shape of the guard is very similar to that of P. sinensis and P. minor. Nevertheless, this species differs from the two latters in having many transverse lines covering on the whole surface of the guard. Because all of these specimens are fossils of external mold and no inner structures have been preserved except a piece of siphuncle remains, the species is not given a new species name. Permian belemnoids are rarely found and the Palaeobelemnopsis is a primitive genus of belemnoids, therefore these specimens have important significance for research on the origin of COLEOIDEA. 4 refs., 3 figs.

  17. Andrés Rivera, Escritor social

    Directory of Open Access Journals (Sweden)

    Marta Waldegaray

    2006-07-01

    Full Text Available La narrativa de Andrés Rivera hace de la historia el material de origen de la escritura y de su convicción política de izquierda el molde en el cual desde hace ya más de cuatro décadas su escritura adquiere forma.Acontecimiento histórico, circunstancia política, poseen en sus primeras novelas el valor de verdad política, de testimonio social. La convicción ideológica que sus libros exhiben se acompaña de una trayectoria literaria que, en su práctica inicial, fue confiada a la representación r...

  18. Comparative Earth history and Late Permian mass extinction

    Science.gov (United States)

    Knoll, A. H.; Bambach, R. K.; Canfield, D. E.; Grotzinger, J. P.

    1996-01-01

    The repeated association during the late Neoproterozoic Era of large carbon-isotopic excursions, continental glaciation, and stratigraphically anomalous carbonate precipitation provides a framework for interpreting the reprise of these conditions on the Late Permian Earth. A paleoceanographic model that was developed to explain these stratigraphically linked phenomena suggests that the overturn of anoxic deep oceans during the Late Permian introduced high concentrations of carbon dioxide into surficial environments. The predicted physiological and climatic consequences for marine and terrestrial organisms are in good accord with the observed timing and selectivity of Late Permian mass extinction.

  19. Eesti Energia esindused = Eesti Energia branches / Andres Labi, Janno Roos

    Index Scriptorium Estoniae

    Labi, Andres, 1977-

    2013-01-01

    Eesti Energia klienditeeninduse kontorite sisekujundusest. Autorid: Janno Roos, Andres Labi ja Liisa Põime (Ruumilabor). Visuaalne identiteet: Tank.Teenuste disain: Urmas Pastarus. ESLi aastapreemiate žürii esimehe Kaido Kivi ning žürii liikme Raivo Puusepa arvamused

  20. Jumalaema kiriku kellamees tuli Tartu Toome varemetesse / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2007-01-01

    13. juulil esietendus Emajõe Suveteatris "Jumalaema kiriku kellamees". Victor Hugo romaani järgi tegi instseneeringu Urmas Lennuk, lavastaja Andres Dvinjaninov. Mängitakse Tartu Toomkiriku varemetes

  1. "Vettpidavad allikad" = "Watertight sources" / Janno Roos, Andres Labi

    Index Scriptorium Estoniae

    Roos, Janno, 1976-

    2013-01-01

    Eesti Ajaloomuuseumis avatud näituse kujundasid Janno Roos ja Andres Labi (Ruumilabor). Kuraator Krista Sarv. Graafiline disain: Identity. Eksponeeritud allveeuuringute käigus leitu. Arhitektuuriajaloolase Leele Välja arvamus

  2. Physicochemical analysis of Permian coprolites from Brazil

    Science.gov (United States)

    Rodrigues, M. I. C.; da Silva, J. H.; Santos, F. Eroni P.; Dentzien-Dias, P.; Cisneros, J. C.; de Menezes, A. S.; Freire, P. T. C.; Viana, B. C.

    2018-01-01

    In this paper we performed the study of two coprolites (fossilized feces) collected from the exposed levels of the Pedra de Fogo Formation, Parnaiba Sedimentary Basin, and Rio do Rasto Formation, Paraná Sedimentary Basin, both of the Palaeozoic era (Permian age). They were characterized using X-ray diffractometry, infrared, Raman and energy dispersive spectroscopy techniques in order to aid our understanding of the processes of fossilization and to discuss issues related to the feeding habits of the animals which generated those coprolites, probably cartilaginous fishes. The results obtained using a multitechnique approach showed that although these coprolites are from different geological formations, 3000 km away from each other, they show the same major crystalline phases and elemental composition. The main phases found were hydroxyapatite, silica, calcite and hematite, which lead to infer that those coprolites were formed under similar conditions and produced by a similar group of carnivore or omnivore fishes.

  3. Organic richness and gas generation potential of Permian Barren ...

    Indian Academy of Sciences (India)

    this study, a total of 32 core samples of Permian Barren Measures from four boreholes in Raniganj field of Damodar Basin ... number of factors like (i) quality and quantity of organic matter ...... Gujarat Energy Research and Management Insti-.

  4. Andres Tolts 60 : omanäoliste vaikelude imeline maailm / Andres Tolts ; intervjueerinud Tiina Kolk ; kommenteerinud Jaan Elken

    Index Scriptorium Estoniae

    Tolts, Andres, 1949-2014

    2009-01-01

    Andres Toltsi näitused "Asjad" Hobusepea galeriis 12. oktoobrini, "Näitus" Tallinna Kunstihoones 25. oktoobrini, "Varane Tolts" Haus galeriis 13. novembrini. Pikemalt näitusest "Näitus", kuraator Harry Liivrand

  5. Film Diegost - kriitikavaba kummardus / Andres Must

    Index Scriptorium Estoniae

    Must, Andres

    2007-01-01

    PÖFFi filme - Argentiina mängufilm legendaarse jalgpalluri Diego Maradona jumaldamisest "Teel Maradona juurde" ("El camino de San Diego") : stsenarist ja režissöör Carlos Sorin. Artikkel on peamiselt Maradonast, vähesel määral filmist

  6. San Francisco District Laboratory (SAN)

    Data.gov (United States)

    Federal Laboratory Consortium — Program CapabilitiesFood Analysis SAN-DO Laboratory has an expert in elemental analysis who frequently performs field inspections of materials. A recently acquired...

  7. Andres Tali sõnavõtt ettekannete päeval = Andres Tali's speech given on the lecture day / Andres Tali

    Index Scriptorium Estoniae

    Tali, Andres, 1956-

    2006-01-01

    Kaasaegse Kunsti Eesti Keskuse ettekannete päev "Kunstnike moraalsed valikud kultuurikonfliktides" 27.04.2006 Tallinna Kunstihoones. Oma installatsioonist "Pastoraalne pastishsh" ning videost "Vägivald ja propaganda - The Movie" samas 8.04.-28.05.2006 avatud Elin Kardi, Marko Mäetamme, Marco Laimre ja Andres Tali ühisnäitusel "Vägivald ja propaganda"

  8. Vi har uddelegeret forbruget og nydelsen til Netflix og de andre teknologigiganter

    DEFF Research Database (Denmark)

    Bak Herrie, Maja

    2018-01-01

    https://www.information.dk/debat/2018/05/uddelegeret-forbruget-nydelsen-netflix-andre-teknologigiganter......https://www.information.dk/debat/2018/05/uddelegeret-forbruget-nydelsen-netflix-andre-teknologigiganter...

  9. Exploratory shaft conceptual design report: Permian Basin

    International Nuclear Information System (INIS)

    1983-07-01

    This conceptual design report summarizes the conceptualized design for an exploratory shaft facility at a representative site in the Permian Basin locatd in the western part of Texas. Conceptualized designs for other possible locations (Paradox Basin in Utah and Gulf Interior Region salt domes in Louisiana and Mississippi) are summarized in separate reports. The purpose of the exploratory shaft facility is to provide access to the reference repository horizon to permit in situ testing of the salt. The in situ testing is necessary to verify repository salt design parameters, evaluate isotropy and homogeneity of the salt, and provide a demonstration of the constructability and confirmation of the design to gain access to the repository. The fundamental purpose of this conceptual design report is to assure the feasibility of the exploratory shaft project and to develop a reliable cost estimate and realistic schedule. Because a site has not been selected and site-specific subsurface data are not available, it has been necessary to make certain assumptions in order to develop a conceptual design for an exploratory shaft facility in salt. As more definitive information becomes available to support the design process, adjustments in the projected schedule and estimated costs will be required

  10. San Marino.

    Science.gov (United States)

    1985-02-01

    San Marino, an independent republic located in north central Italy, in 1983 had a population of 22,206 growing at an annual rate of .9%. The literacy rate is 97% and the infant mortality rate is 9.6/1000. The terrain is mountainous and the climate is moderate. According to local tradition, San Marino was founded by a Christian stonecutter in the 4th century A.D. as a refuge against religious persecution. Its recorded history began in the 9th century, and it has survived assaults on its independence by the papacy, the Malatesta lords of Rimini, Cesare Borgia, Napoleon, and Mussolini. An 1862 treaty with the newly formed Kingdom of Italy has been periodically renewed and amended. The present government is an alliance between the socialists and communists. San Marino has had its own statutes and governmental institutions since the 11th century. Legislative authority at present is vested in a 60-member unicameral parliament. Executive authority is exercised by the 11-member Congress of State, the members of which head the various administrative departments of the goverment. The posts are divided among the parties which form the coalition government. Judicial authority is partly exercised by Italian magistrates in civil and criminal cases. San Marino's policies are tied to Italy's and political organizations and labor unions active in Italy are also active in San Marino. Since World War II, there has been intense rivalry between 2 political coalitions, the Popular Alliance composed of the Christian Democratic Party and the Independent Social Democratic Party, and the Liberty Committee, coalition of the Communist Party and the Socialist Party. San Marino's gross domestic product was $137 million and its per capita income was $6290 in 1980. The principal economic activities are farming and livestock raising, along with some light manufacturing. Foreign transactions are dominated by tourism. The government derives most of its revenue from the sale of postage stamps to

  11. PERMIAN BRACHIOPODS FROM KARAKORUM (PAKISTAN PART. 3.

    Directory of Open Access Journals (Sweden)

    LUCIA ANGIOLINI

    2001-11-01

    Full Text Available Late Wordian (Guadalupian brachiopods from Member 2 of the Panjshah Formation in the Karakorum (N Pakistan are described. The brachiopod assemblage, dated by the associated fusulinids and conodonts, consists of 29 genera (3 of which are questionable and 1 unidentifiable of the orders Productida, Orthida, Rhynchonellida, Athyridida, Spiriferida and Terebratulida. Hunzininae, a new subfamily of the Spiriferellidae is proposed; it includes Darbandia n. gen., with type species D. vagabunda n. sp. and Elivina chapursani n. sp. A third new species is assigned to the genus Anchorhynchia of the family Wellerellidae: A. cimmerica n. sp.A quantitative biostratigraphic analysis demonstrates two major faunal changes in the Elivina chapursani- Chapursania tatianae Assemblage Zone of the upper part of Member 2, which are not strictly linked to lithological changes. This biozone is correlated with the brachiopod faunas of the Gnishik Formation of Armenia and those of the basal Takhtabulak Formation of SE Pamir.The faunal elements of the Elivina chapursani- Chapursania tatianae Assemblage Zone are an admixture of wide-ranging, Tethyan (particularly abundant, Gondwanan and endemic (Cimmerian genera, representing a transitional fauna and a biostratigraphic tool for intercontinental correlation, which are particularly problematic in this time interval. The Panjshah transitional fauna demonstrates the persistence of the Transhimalayan Province of the Cimmerian Region into the late Guadalupian, which originated at the end of the Cisuralian and occupied Armenia, Central Afghanistan, Karakorum and SE Pamir. It provides also some insights into the biodiversity pattern before the mass extinction at the end of the Guadalupian, and suggests that this event was as rapid as the end- Permian mass extinction, at least in Central Asia. 

  12. The Permian mega floras of Uruguay.A synthesis

    International Nuclear Information System (INIS)

    Crisafulli, A.; Herbst, R.

    2007-01-01

    The Permian megafloras of Uruguay. A synthesis. An analysis of the impression and fossil wood floras from the Permian of Uruguay is given through a series of Tables. These show : (1) the list of taxa, (2) anatomical characters of the woods, (3) data on the microfloral associations, (4) paleoenvironmental information and (5) comparisons with contemporaneous Gondwana floras. The evolutionary degree of the woods is briefly analyzed where they correspond to the so-called ''transition xilotaphofloras'' as they present typical Paleozoic anatomical characters but with secondary xylem of more advanced characteristics. (author)

  13. Les mots du jazz. Retour(s) sur Le Jazz, d'André Schaeffner et André Coeuroy

    OpenAIRE

    Roueff , Olivier

    2001-01-01

    International audience; Le Jazz by André Schaeffner and André Cœuroy (1926), the first learned analysis of jazz, signaled an important phase in the reinvention of this music in France, since, through the debates it sparked at the time, it helped change jazz’s identity from an « American » to a « Black American » music with African « roots ». Cœuroy and Schaeffner referred to sorts of music that jazz criticism would have throw out of its pantheon, but their analyses would form the major grids ...

  14. Mis siis juhtus Andres Lapeteusega? / Õie Orav

    Index Scriptorium Estoniae

    Orav, Õie

    2011-01-01

    Režissöör Grigori Kromanovi filmist "Mis juhtus Andres Lapeteusega?" (Tallinnfilm, 1965). Osades: Einari Koppel, Ita Ever, Heino Mandri, Kaljo Kiisk, Uno Loit, Ada Lundver jt. Lühidalt filmi kohta ilmunud arvustustest. Filmi näeb ETV2-s sarjas "Unustatud filmid"

  15. Peaosa nii teatrilaval kui ka kinolinal / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2010-01-01

    Natalja Murina-Puustusmaast, kes mängib peaosa Vene Teatri uuslavastuses "Besame mucho", mille Afolf Käis on lavastanud Eduardo de Filippo näidendi "Silinder" järgi, ja Andres Puustusmaa filmis "Rotilõks", mille võtted algavad peagi

  16. Kino, Theater, Fernsehen : André Bazins Publikumstheorie

    NARCIS (Netherlands)

    Hanich, Julian; Mundhenke, Florian; Weber, Thomas

    2017-01-01

    What did the great French film theorist André Bazin think of the collective experience in the cinema? What did he write about the influence co-viewers can have on the emotional engagement, the evaluation and the interpretation of a film? In short: What was his audience theory? To be sure, Bazin is

  17. Parts harvendas ootamatult Eesti Energia nõukogu / Andres Eilart

    Index Scriptorium Estoniae

    Eilart, Andres

    2011-01-01

    Majandus- ja kommunikatsiooniminister Juhan Parts otsustas 1. juulil päevapealt Eesti Energia nõukogu liikme kohalt tagasi kutsuda Aivar Reiviku ning Rein Kuusmiku, kes olid vastu Eesti Energia üle viie miljoni euro suurusele investeeringule Weroli rapsiõlitehase juurde rajatavasse elektri- ja küttejaama. Uuteks nõukogu liikmeteks said Andres Saame ja Toomas Tauts

  18. Mis on looming.org? : elektrooniline heli / Andres Lõo

    Index Scriptorium Estoniae

    Lõo, Andres

    2004-01-01

    Võrguajakirjast www.looming.org, kuhu kogutakse infot põhiliselt kahe jaotuse põhjal: muusika ja helieksperimentalism ning kaasaegne kunst, kunsti ja meediaga seonduv. Idee autorid: Hanno Soans ja Andres Lõo. Ilmunud on looming.orgi esimene muusikakogumik "Lilled algebrale"

  19. 2623-IJBCS-Article-Gadji Alahou André

    African Journals Online (AJOL)

    hp

    1. Alahou André Gabazé GADJI1,2*, Ossey Bernard YAPO1, Kouabenan ABO2,. Ladji MEITE1, Agnès Eude Yves GNAGNE1, Satinder Kaur BRAR 3 et. Rajeshwar Dayal TYAGI4. 1Laboratoire des Sciences de l'Environnement (LSE), Unité de ...

  20. Andres Sütevaka näitus Stockholmis

    Index Scriptorium Estoniae

    2000-01-01

    Sütevaka Andrese abstraktsete maalide näitus Stockholmi Eesti Majas. Sütevaka Andres ja näituse avamisele sõitnud tema loomingu kollektsionäär Matti Milius kohtusid Moderna Museeti direktori David Elliotiga teadvustamaks Tartu ja Pärnu kunstielu.

  1. André François Boshoff

    African Journals Online (AJOL)

    Campbell Murn

    1945-2016) and pay tribute to him. An only child, André spent most of his childhood in very remote areas of southern Africa due to his magistrate father's various postings. Such locations, for example coastal. Transkei and the Caprivi Strip, instilled ...

  2. Kommest Auto ostmisest huvitub ka Hillar Teder / Andres Eilart

    Index Scriptorium Estoniae

    Eilart, Andres

    2008-01-01

    Kommest Auto ostmise vastu tunnevad huvi suurärimees Andres Sarri, Rootsis Peugeot' sõidukeid müüv Taani päritolu K. W. Bruun Import ja multimiljonär Hillar Teder, kellele kuulub Audisid müüv Reval Auto

  3. Early Permian intrusions in the Paleozoic sediments of the Eastern North Sea area

    DEFF Research Database (Denmark)

    Clausen, O.R.; Andresen, Katrine Juul; Rasmussen, Jens Andreas

    in the Northern Permian Basin which in the eastern North Sea is separated from the Southern Permian Basin by the Ringkøbing-Fyn High. The Permian basins were initiated during thermal subsidence following a late Carboniferous- early Permian rifting phase associated with extensive igneous activity recorded across...... the entire North Sea Basin. The easternmost intrusions and extrusions have been associated to the “Skagerrak-Centered Large Igneous Province” that has an early Permian age of c. 297 Ma. Compared to the Southern Permian Basin which historically has been intensely investigated because of the known presence...... of hydrocarbons within the Paleozoic sediments, the Northern Permian Basin has gained much less interest outside the hydrocarbon producing Mesozoic graben systems. This is mainly due to an apparent lack of potential source rocks. A major E-W striking northward dipping fault system characterizes the study area...

  4. Organic richness and gas generation potential of Permian Barren

    Indian Academy of Sciences (India)

    The organic geochemistry of shales in terms of its organic richness, hydrocarbon source potential, thermal maturity, depositional environment, etc., are essential stipulations for shale gas resources assessment. In this study, a total of 32 core samples of Permian Barren Measures from four boreholes in Raniganj field of ...

  5. Terrestrial acidification during the end-Permian biosphere crisis?

    NARCIS (Netherlands)

    Sephton, Mark A.; Jiao, Dan; Engel, Michael H.; Looy, Cindy V.; Visscher, Henk

    Excessive acid rainfall associated with emplacement of the Siberian Traps magmatic province is increasingly accepted as a major contributing factor to the end-Permian biosphere crisis. However, direct proxy evidence of terrestrial acidification is so far not available. In this paper, we seek to

  6. Progress in the Gondwanan Carboniferous–Permian palynology ...

    Indian Academy of Sciences (India)

    The first section describes challenges in the Carboniferous–Permian Gondwanan stratigraphic palynology, and progress in techniques such as presence of the 'rare-marine intervals', and 'radiometric dating' in some Gondwanan successions, e.g., South Africa, Australia and South America, as tools to confidently calibrate ...

  7. Palynostratigraphy of Permian succession in the Mand–Raigarh ...

    Indian Academy of Sciences (India)

    Palynofloras have been recorded from the Barakar Formation in the Borehole MBKW-3, Barpali–Karmitikra Block, Mand–Raigarh Coalfield, Chhattisgarh. Three distinct palynoassemblages have been identified and referred to the following palynoassemblage zones – Gondisporites raniganjensis (Latest Permian); ...

  8. On the origin of the southern Permian Basin, Central Europe.

    NARCIS (Netherlands)

    van Wees, J.D.A.M.; Stephenson, R.A.; Ziegler, P.A.; Bayer, U.; McCann, T.; Dadlez, R.; Gaupp, R.; Narkiewicz, M.; Bitzer, F.; Scheck, M.

    2000-01-01

    A detailed study of the structural and stratigraphic evolution of the Southern Permian Basin during latest Carboniferous to Early Jurassic times, supported by quantitative subsidence analyses and forward basin modelling for 25 wells, leads us to modify the conventional model for the

  9. Evidence of lacustrine sedimentation in the Upper Permian Bijori

    Indian Academy of Sciences (India)

    The Upper Permian Bijori Formation of the Satpura Gondwana basin comprising fine- to coarsegrained sandstone, carbonaceous shale/mudstone and thin coal bands was previously interpreted as the deposits of meandering rivers. The present study documents abundance of wave ripples, hummocky and swaley ...

  10. Review of monolete-producing Carboniferous-Permian sphenophylls

    Czech Academy of Sciences Publication Activity Database

    Libertín, M.; Bek, Jiří

    2008-01-01

    Roč. 2008, č. 2 (2008), s. 168-168 ISSN 0946-8978. [International Palynological Congress /12./ ; International Organisation of Palaeobotany Conference /8./. 30.08.2008-05.09.2008, Bonn] R&D Projects: GA AV ČR IAA300130503 Institutional research plan: CEZ:AV0Z30130516 Keywords : Carboniferous * Permian * sphenophylls Subject RIV: DB - Geology ; Mineralogy

  11. Palynostratigraphy of Permian succession in the Mand–Raigarh ...

    Indian Academy of Sciences (India)

    Palynofloras have been recorded from the Barakar Formation in the Borehole MBKW-3, Barpali–. Karmitikra Block, Mand–Raigarh Coalfield, Chhattisgarh. Three distinct palynoassemblages have been identified and referred to the following palynoassemblage zones – Gondisporites raniganjensis (Latest. Permian); ...

  12. Late Carboniferous to Late Permian carbon isotope stratigraphy

    DEFF Research Database (Denmark)

    Buggisch, Werner; Krainer, Karl; Schaffhauser, Maria

    2015-01-01

    An integrated study of the litho-, bio-, and isotope stratigraphy of carbonates in the Southern Alps was undertaken in order to better constrain δ13C variations during the Late Carboniferous to Late Permian. The presented high resolution isotope curves are based on 1299 δ13Ccarb and 396 δ13Corg...

  13. Gas hydrate contribution to Late Permian global warming

    Czech Academy of Sciences Publication Activity Database

    Majorowicz, J.; Grasby, S. E.; Šafanda, Jan; Beauchamp, B.

    2014-01-01

    Roč. 393, May (2014), s. 243-253 ISSN 0012-821X Institutional support: RVO:67985530 Keywords : Latest Permian extinction * gas hydrates * carbon isotope shift Subject RIV: DC - Siesmology, Volcanology, Earth Structure Impact factor: 4.734, year: 2014

  14. Permian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia: II. The morphogenus Glossopteris

    Directory of Open Access Journals (Sweden)

    Roberto Iannuzzi

    2004-03-01

    Full Text Available Fossil plants belonging to the morphogenera Glossopteris, Pecopteris and Asterotheca were collected from the upper part of the Chutani Formation (Titicaca Group, near the town of San Pablo de Tiquina, on the southeastern shore of Lake Titicaca (northern Altiplano, Bolivia. This paper presents the first description of specimens of the morphogenus Glossopteris from Bolivia. The Bolivian specimens of Glossopteris consist of poorly-preserved impressions, although they present the diagnostic features of this morphogenus. They are fragments of leaves with secondary veins of taeniopterid-type, typical of glossopterids from Late Permian deposits of Gondwana. The only species of Pecopteris confirmed in the first part of this study, i.e. P. dolianitii Rösler and Rohn (see Vieira et al. 2004, was previously reported from the Late Permian beds of the Rio do Rasto and Estrada Nova formations in the Paraná Basin (southern Brazil. Therefore, a Late Permian age is proposed for the fossil plant-bearing beds of the Chutani Formation based on the analyzed assemblage. The phytogeographic implications of this new find are briefly analyzed.Plantas fósseis, pertencentes aos morfo-gêneros Glossopteris, Pecopteris e Asterotheca, foram coletadas na porção superior da seção aflorante da Formação Chutani, próxima ao povoado de San Pablo de Tiquina, sudeste do lago Titicaca (Altiplano norte, Bolívia. Este trabalho apresenta a primeira descrição de espécimes do morfo-gênero Glossopteris provenientes da Bolívia. Os espécimes estudados de Glossopteris consistem em impressões foliares pobremente preservadas nas quais feições diagnósticas estão presentes. Os fragmentos foliares apresentam venação secundária do tipo teniopteróide, uma característica típica de glossopterídeas encontradas em depósitos do Permiano Superior do Gondwana. Por sua vez, a única espécie de Pecopteris confirmada para estes níveis da Formação Chutani, i.e. P. dolianitii

  15. Tallinna Lennujaama kauba- ja tolliterminaal. Lennujaama 2, Tallinn / Andres Põime

    Index Scriptorium Estoniae

    Põime, Andres

    1998-01-01

    Kaubateeninduskeskuse puhul on tegemist suure, plaanimõõtudes 36x102 meetrise metallkonstruktsioonis, sandwich tüüpi paneelidega kaetud laohoonega, kus ühelt poolt tuuakse tollitav kaup lennukitelt sisse ja teiselt poolt viiakse tollitud kaup välja. Peatöövõtja : Normanni Linnagrupi AS. Ehitaja : Merko. Peaprojekteerija : K-Projekt. Arhitektuurne lahendus : Stuudio 3. Arhitekt Andres Põime ; töögrupp Vivian Oruvee, Tiiu Raudsepp, Reet Põime. Projekt 1997-98, valmis 1998.

  16. André Lefevere and his Manipulation School

    OpenAIRE

    Šmrha, Jan

    2015-01-01

    This theoretical and historiographical thesis examines the theoretical work of the Translation Studies scholar André Lefevere. It focuses primarily on the analysis of Lefevere's work in the context of the development of Translation Studies (particularly in connection with the development of Descriptive Translation Studies, the formation of the "Manipulation School" and the cultural and sociological turns in Translation Studies). The thesis covers Lefevere's theoretical underpinnings, the grad...

  17. Sobre "La tortuga" de Andrés Holguin

    Directory of Open Access Journals (Sweden)

    José Puben

    1961-04-01

    Full Text Available Andrés Holguín no es el primero y, ciertamente, no será el último escritor contemporáneo que, interesado por el problema de los animales que han logrado dimensión fantástica, se proponga, con interés intelectual, analizar e investigar la dimensión e importancia de un animal en la historia de la cultura.

  18. Mida teeks tulevane kultuuriminister 500 miljoni krooniga? / interv. Andres Keil

    Index Scriptorium Estoniae

    2007-01-01

    Suuremate erakondade kultuurispetsialistid (kultuuriministrikandidaadid) Urmas Paet, Andres Herkel, Peeter Jalakas, Indrek Saar, Jaak Allik, samuti kultuuriminister Raivo Palmaru vastavad küsimustele, mis on suurimad ohud eesti keele ja rahvuskultuuri säilimisele, milline on kultuuriministeeriumi ja -ministri portfelli staatus praeguses valitsuses, kas kultuuri rahastamine riigieelarvest on piisav, mille poolest erineb nende erakonna nägemus kultuuripoliitikast teiste erakondade omast, kuhu nad suunaksid 50, 500 miljonit, kui see oleks nende käsutuses

  19. Revolver, kala ja harmoonia / Andres Tolts ; intervjueerinud Kadri Karro

    Index Scriptorium Estoniae

    Tolts, Andres, 1949-2014

    2009-01-01

    Andres Toltsi juubelinäitused Tallinnas: "Näitus" Tallinna Kunstihoones 25.9-25.10, "Asjad" Hobusepea galeriis 30.9-12.10, "Juubelinäitus" Haus galeriis 8.10-13.11. Kunstnik räägib oma loomingust, revolvri ja kala motiivist oma töödes, mõttekaaslusest, eestiaegsest maailmavaatest, harmooniast ja isikupärast kunstis ning elus, ilust ja inetusest, kaasaja kunstnike vajadusest oma loomingut sõnade abil seletada

  20. A conservation strategy in San Andres Island: school projects and values in environmental education

    International Nuclear Information System (INIS)

    Forero M, German; Mahecha G, Ana Maria

    2006-01-01

    With the scope of showing and preserving an island endangered species, the Swanka turtle, a campaign and an environmental education program were conducted. The campaign consisted in showing the species to the community, its characteristics and its threats, through mass media and visits to different local schools. The environmental education program was carried out through a Scholar Environmental Project, which consisted on the conformation of an environmental group, where cognitive, attitudinal and participative aspects were worked together. Using a constrictive methodology the children developed some knowledge about the species and Its habitats. The scope was that they modified attitudes and behaviors towards situations that contribute to environmental damage; the reinforcement of values was the central point during all the activities. The knowledge gained by the pupils and the observed changes on their attitudes and participation show the positive results that arise when the action of environmental education focuses on the people and not the resources that are to be preserved

  1. El archipiélago de San Andrés en la historia

    Directory of Open Access Journals (Sweden)

    Miguel Aguilera

    1961-04-01

    Full Text Available El turismo en Hispano-América tiene que ir de brazo con la información histórica. Puede el paisaje, o los accidentes de la naturaleza, o la arquitectura colonial producir sensaciones agradables al común de los viajeros y paseantes; pero mayor es la satisfacción de las gentes cultas que aspiran a saber cómo y en qué medida la mano, la inteligencia y el valor del hombre dejó sus huellas en las cosas que se ofrecen ante sus ojos.

  2. Gas lift for annular flow in San Andres well No. 24

    Energy Technology Data Exchange (ETDEWEB)

    Zenteno, E B

    1968-10-01

    Gas lift is a method of artificial lift which utilizes the expansive energy of compressed gas to lift fluid from the formation up to the surface separation installation. A wide range of operations exists for gas lifting. For making a decision regarding the use of such a method, the following steps are recommended: (1) establish the well fluid characteristics, the productivity index, the oil/water relationship, the fluid properties, the diameter of the tubing and similar data; (2) for the range of production desired, calculate a pressure gradient curve for the fluid below the point of gas injection; (3) supposing there is a difference in the relationship of injected gas to oil, calculate a pressure gradient curve of the fluid above the point of gas injection (this assumes a constant surface discharge pressure); and (4) simultaneously solve (2) and (3), which will permit determination of the variation according to depth of the point of gas injection, together with the pressure of the injected gas, and also the relation between the injected gas and the oil. Finally, calculate the theoretical potential necessary for the desired compression of the gas to such surface pressure that it will discharge at an injection pressure that will produce optimized conditions for development of the desired production.

  3. The earliest Permian shark fossils from Texas and their implications for later marine faunas

    Science.gov (United States)

    Shell, R.; Ciampaglio, C. N.

    2017-12-01

    Complex marine vertebrate faunas from lower Permian rocks are incredibly rare. Recent research suggests that the composition of what few communities can be found varied wildly, especially in regard to the presence or absence of Hybodontiform sharks. Early Permian marine faunas in Texas are generally richer in Hybodont sharks than similarly aged communities in Russia and Bolivia, but the cause of this variation is unknown. A fossil hybodont spine fragment from just above the Pennsylvanian/Permian boundary in Texas, however, suggests that that regional climatic events allowed Hybodont sharks to migrate into the Permian Basin at the outset of the Permian itself. As the Basin evolved tectonically and sedimentologically, these sharks likely evolved to fill new niches as they opened up- which may have resulted in the increased number of Hybodont species in the Permian of Texas: a major factor to consider in the faunal evolution of the Western Interior Seaway during the Mesozoic and beyond.

  4. Whirling in the late Permian: ancestral Gyrinidae show early radiation of beetles before Permian-Triassic mass extinction.

    Science.gov (United States)

    Yan, Evgeny V; Beutel, Rolf G; Lawrence, John F

    2018-03-16

    Gyrinidae are a charismatic group of highly specialized beetles, adapted for a unique lifestyle of swimming on the water surface. They prey on drowning insects and other small arthropods caught in the surface film. Studies based on morphological and molecular data suggest that gyrinids were the first branch splitting off in Adephaga, the second largest suborder of beetles. Despite its basal position within this lineage and a very peculiar morphology, earliest Gyrinidae were recorded not earlier than from the Upper Triassic. Tunguskagyrus. with the single species Tunguskagyrus planus is described from Late Permian deposits of the Anakit area in Middle Siberia. The genus is assigned to the stemgroup of Gyrinidae, thus shifting back the minimum age of this taxon considerably: Tunguskagyrus demonstrates 250 million years of evolutionary stability for a very specialized lifestyle, with a number of key apomorphies characteristic for these epineuston predators and scavengers, but also with some preserved ancestral features not found in extant members of the family. It also implies that major splitting events in this suborder and in crown group Coleoptera had already occurred in the Permian. Gyrinidae and especially aquatic groups of Dytiscoidea flourished in the Mesozoic (for example Coptoclavidae and Dytiscidae) and most survive until the present day, despite the dramatic "Great Dying" - Permian-Triassic mass extinction, which took place shortly (in geological terms) after the time when Tunguskagyrus lived. Tunguskagyrus confirms a Permian origin of Adephaga, which was recently suggested by phylogenetic "tip-dating" analysis including both fossil and Recent gyrinids. This also confirms that main splitting events leading to the "modern" lineages of beetles took place before the Permian-Triassic mass extinction. Tunguskagyrus shows that Gyrinidae became adapted to swimming on the water surface long before Mesozoic invasions of the aquatic environment took place

  5. Environmental mutagenesis during the end-Permian ecological crisis.

    Science.gov (United States)

    Visscher, Henk; Looy, Cindy V; Collinson, Margaret E; Brinkhuis, Henk; van Konijnenburg-van Cittert, Johanna H A; Kürschner, Wolfram M; Sephton, Mark A

    2004-08-31

    During the end-Permian ecological crisis, terrestrial ecosystems experienced preferential dieback of woody vegetation. Across the world, surviving herbaceous lycopsids played a pioneering role in repopulating deforested terrain. We document that the microspores of these lycopsids were regularly released in unseparated tetrads indicative of failure to complete the normal process of spore development. Although involvement of mutation has long been hinted at or proposed in theory, this finding provides concrete evidence for chronic environmental mutagenesis at the time of global ecological crisis. Prolonged exposure to enhanced UV radiation could account satisfactorily for a worldwide increase in land plant mutation. At the end of the Permian, a period of raised UV stress may have been the consequence of severe disruption of the stratospheric ozone balance by excessive emission of hydrothermal organohalogens in the vast area of Siberian Traps volcanism. Copyright 2004 The National Academy of Sciencs of the USA

  6. Kutseharidust hakkab muutma uus paradigma / André Huigens ; intervjueerinud Veiko Belials

    Index Scriptorium Estoniae

    Huigens, André

    2011-01-01

    Intervjuu Luual toimunud rahvusvahelise kutsehariduse alase seminari peaesineja, André Huigensiga, kes on Euroopa kutseõppe arenduskeskuse Cedefop kvalifikatsiooniraamistiku ekspert Hollandi Wellantcollege’ist

  7. Structure of the Anayet Permian basin (Axial Zone, Central Pyrenees)

    Science.gov (United States)

    Rodriguez, L.; Cuevas, J.; Tubía, J. M.

    2012-04-01

    The Anayet Permian basin was generated by strike-slip tectonics that opened subsident basins with pull-apart geometries in the western Spanish Axial Zone (between the Aragon and Tena valleys). A continental succession of Permian age, that represents the first post-variscan deposits in the area, fills the basin and covers discordantly Devonian to Carboniferous limestones, sandstones and slates. Permian deposits have been classically divided in four main detrital groups, with three basic volcanic episodes interbedded (Gisbert, 1984, Bixel, 1987): the Grey Unit (50-120 m, Estefanian to Kungurian) with slates, conglomerates, tobaceous slates, coal and pyroclastic deposits, the Transition Unit (50 m maximum) showing grey and red sandstones and lutites with oolitic limestones intercalated, the Lower Red Unit (250 m) composed of cross-bedded red sandstones and andesitic volcanic rocks at the top, and finally the Upper Red Unit (400 m minimum, top eroded) formed by three fining up megasequences of carbonates, red sandstones and lutites with lacustrine carbonates intercalated and alkali basalts at the top. Increasingly older rocks are found towards the western part of the basin, where its depocenter is located. South-vergent angular folds deform the Permian sedimentary succession. Fold axes are N115 °E-trending, almost horizontal and are characterized by a remarkably constant orientation. Folds exhibit a long limb dipping slightly to the north and a short vertical limb, occasionally reversed. In the Anayet basin four main folds, with a wavelength of 400 m, can be distinguished, two anticlines and two synclines, with minor folds associated. Related to the angular folds an axial plane foliation, E-trending and dipping 40 to 60° to the north, is developed in the lutites. The more competent rocks, conglomerates and breccias, only locally show a spaced fracture cleavage. No main thrusts have been detected in Permian rocks. However, minor scale decollements, usually low angle

  8. Tehnikahuviline juht ootab töötajalt ausust / Andres Haamer ; interv. Urve Vilk

    Index Scriptorium Estoniae

    Haamer, Andres, 1942-

    2008-01-01

    Overall Eesti nõukogu esimees Andres Haamer vastab oma lapsepõlve, haridusteed, karjääri, AS-i Overalli asutamist, oma tööülesandeid ning ühiskondlikus elus osalemist puudutavatele küsimustele. Kommenteerib Valdo Kalm. Lisa: Andres Haamer; Edu võtmed

  9. Globaliseerumine : oht või võimalus? / Andres Arrak

    Index Scriptorium Estoniae

    Arrak, Andres, 1958-2017

    2007-01-01

    Globaliseerumise ja võrgustumise muutumine võimaluseks või ohuks sõltub konkreetse riigi majanduse ja tööturu kohanemisvõimest. Globaalsete finantsvoogude kirjeldus, kapitali ja Eestisse tulevate rahavoogude analüüs ning hinnang Eesti tööturu paindlikkusele ja ettevõtjate innovatiivsusele. Graafikud: Otse- ja portfelliinvesteeringute ning laenude sissevool Eestisse 1992-2006; Diagramm: Eesti tööjõuturg sammub Ameerika jälgedes. Vt. samas: Andres Saarniit. Raha ei ole kuhugi kadunud

  10. The paleoclimate of the Kazanian (early Late Permian) world

    Energy Technology Data Exchange (ETDEWEB)

    Moore, G.T. (Chevron Oil Field Research Co., La Habra, CA (USA)); Peoples, C.J. (Texas A and M Univ., College Station (USA))

    1990-05-01

    The Kazanian (early Late Permian, 258-253 m.y.) marked the onset of a unique interval in the Phanerozoic, distinguished by a classic end-member case of continental assembly, the megacontinent Pangaea. Compilation of biostratigraphic and lithofacies data indicate a warm, extensively arid world, largely ice free, and characterized by the onset of atmospheric conditions that were exceedingly stressful to the biosphere, the worst of the eon. Using Chevron's version of the Community Climate model, the authors report here on two Kazanian paleoclimate seasonal simulations, one using 200 ppm CO{sub 2} and the other with 2,000 ppm CO{sub 2}. The authors consider the knowledge of plate assembly back to the Permian accurate enough to allow employment of a seasonal model. Simulation of a warmer Earth with an elevated greenhouse effect (modeled as CO{sub 2}) fits the observed geology and isotope signals. The increased CO{sub 2} experiment warmed the entire planet with the greatest increases north of 50{degree} latitude and least changes in the tropics. The warming caused the poleward retreat of sea ice in both hemispheres. Precipitation and evaporation increased, but runoff was confined to areas of very intense rainfall. Monsoons are limited to the southern hemisphere, associated with the western Tethys sea and the eastern equatorial Panthalassa ocean. Extreme southeastern Pangaea (northern Australia) was a focus of precipitation throughout the year. Precipitation occurred in the higher latitudes (50-55{degree}) on the western coast, of Pangaea where storm tracks make landfall. High evaporation rates characterized the restricted Permian (US), Zechstein, and Perm (Soviet Union) basins, a time of evaporite, deposition. Interior Pangaea at middle to high latitudes endured frigid winters ({minus}40{degree}C) and torrid summers (60{degree}C).

  11. Permian Tethyan Fusulinina from the Kenai Peninsula, Alaska

    Science.gov (United States)

    Stevens, C.H.; Davydov, V.I.; Bradley, D.

    1997-01-01

    Two samples from a large, allochthonous limestone block in the McHugh Complex of the Chugach terrane on the Kenai Peninsula, Alaska, contain species of 12 genera of Permian Fusulinina including Abadehella, Kahlerina, Pseudokahlerina?, Nankinella, Codonofusiella, Dunbarula, Parafusulina?, Chusenella, Verbeekina, Pseudodoliolina, Metadoliolina?, Sumatrina?, and Yabeina, as well as several other foraminiferans and one alga. The assemblage of fusulinids is characteristically Tethyan, belonging to the Yabeina archaica zone of early Midian (late Wordian) age. Similar faunas are known from the Pamirs, Transcaucasia, and Japan, as well as from allochthonous terranes in British Columbia, northwestern Washington, and Koryakia in eastern Siberia.

  12. The genusGuenthera Andr. in Bess. (Brassicaceae, Brassiceae

    Directory of Open Access Journals (Sweden)

    Gómez-Campo, César

    2003-12-01

    Full Text Available A group of nine species -now included in Brassica— differ from all the other species in several characters, mainly in the stylar portion of their pistils always without seed primordia. Also in their branched subterranean stem (caudex with several leaf rosettes, their leaves entire to deeply pinnatifid but never pinnatisect, their shallowly notched cotyledons and their flattened, elliptic or ovoid seed contour. It is suggested to include these species under the generic denomination Guenthera Andr, in Bess. New ñames for the species and subspecies are provided, as well as a determination key for the species.Un grupo de nueve especies actualmente incluidas en Brassica difiere de todas las demás por varios caracteres, sobre todo por la porción estilar de sus pistilos, que siempre carece de primordios seminales. Además, por su tallo subterráneo ramificado, que forma un cáudex con varias rosetas; sus hojas de enteras hasta profundamente pinnatífidas, pero nunca pinnatisectas; sus cotiledones solo muy ligeramente escotados, y sus semillas, que tienden a ser elipsoidales o aplanadas. Se propone agruparlas todas bajo la denominación genérica Guenthera Andr, in Bess. Se detallan los nuevos nombres para las especies y Subespecies y se añade una clave para diferenciar las especies.

  13. Pomeranchuk Prize awarded to André Martin

    CERN Multimedia

    Jordan Juras

    2010-01-01

    Professor André Martin has been awarded the I.Ya.Pomeranchuk Prize 2010, alongside Professor Valentine Zakharov.   André Martin, CERN theorist, pictured at the ceremony held in honour of his 80th birthday (August 2009). Established by the Institute of Theoretical and Experimental Physics (ITEP) in memory of an outstanding scientist Isaak Yakovlevich Pomeranchuk, the prize is awarded for the study of analytic properties of the scattering amplitude; which lead to the Froissart—Martin bound on the cross section growth with energy. The prize comes as a great honor for Martin, who was in fact a good friend of Mr. Pomeranchuk, "I am surprised and delighted to learn that I will be receiving the 2010 Pomeranchuk Prize. I was an admirer of Pomeranchuk and we shared a great friendship. I met with him for the last time in Erevan (Armenia) in 1965. As a good-bye, he told me, 'Analyticity exists'. This is precisely what I proved to earn the prize"....

  14. Dalhart's only Permian field gets best oil well

    International Nuclear Information System (INIS)

    Land, R.

    1992-01-01

    This paper reports that activity is picking up in Proctor Ranch oil field in the northwestern Texas panhandle, the only Permian producing field in the lightly drilled Dalhart basin. During the last 2 1/2 months, the field has a new operator and a new producing well, the best of five drilled since discovery in 1990. Corlena Oil Co., Amarillo, acquired the field from McKinney Oil Co. in May and tested its first well in early July. The 1-64 Proctor, 18 miles west of Channing, pumped at rates as high as 178 bd of oil and 6 b/d of water from Permian Wolfcamp dolomite perforations at 4,016-29 ft. Corlena plans to drill another well south of the field soon. The lease requires that the next well be spudded by early November. The field appears to be combination structural-stratigraphic trap in which the dolomite pinches out against the Bravo Domes-Oldham nose to the west

  15. Flourishing ocean drives the end-Permian marine mass extinction.

    Science.gov (United States)

    Schobben, Martin; Stebbins, Alan; Ghaderi, Abbas; Strauss, Harald; Korn, Dieter; Korte, Christoph

    2015-08-18

    The end-Permian mass extinction, the most severe biotic crisis in the Phanerozoic, was accompanied by climate change and expansion of oceanic anoxic zones. The partitioning of sulfur among different exogenic reservoirs by biological and physical processes was of importance for this biodiversity crisis, but the exact role of bioessential sulfur in the mass extinction is still unclear. Here we show that globally increased production of organic matter affected the seawater sulfate sulfur and oxygen isotope signature that has been recorded in carbonate rock spanning the Permian-Triassic boundary. A bifurcating temporal trend is observed for the strata spanning the marine mass extinction with carbonate-associated sulfate sulfur and oxygen isotope excursions toward decreased and increased values, respectively. By coupling these results to a box model, we show that increased marine productivity and successive enhanced microbial sulfate reduction is the most likely scenario to explain these temporal trends. The new data demonstrate that worldwide expansion of euxinic and anoxic zones are symptoms of increased biological carbon recycling in the marine realm initiated by global warming. The spatial distribution of sulfidic water column conditions in shallow seafloor environments is dictated by the severity and geographic patterns of nutrient fluxes and serves as an adequate model to explain the scale of the marine biodiversity crisis. Our results provide evidence that the major biodiversity crises in Earth's history do not necessarily implicate an ocean stripped of (most) life but rather the demise of certain eukaryotic organisms, leading to a decline in species richness.

  16. Late Carboniferous and Early Permian algal microflora (Liuzhou, South China)

    Energy Technology Data Exchange (ETDEWEB)

    Li Chun (Nanjing Inst. of Geology and Paleontology, Nanjing (China)); Mamet, B. (Montreal Univ., PQ (Canada))

    1993-03-01

    Paleozoic algae are important contributors to the formation of carbonate sediments. A study was conducted to compare an Upper Carboniferous-Lower Permian carbonate succession of South China with what is generally observed in the Tethys Sea and North America. The sequence studied was in the Maping Limestone at the Loutishan section in Liuzhou, with some additional information derived from the Maping Limestone at Shangxinping and from the Chuanshan Limestone at Yuhuangshan and in the Nanjing Hills. In the Late Carboniferous, the beresellid algae are important builders and the Tubiphytes-Archaeolithophyllum community is locally replaced by a Tubiphytes-Ungdarella association. Early Permian oncolites were formed by complex Osagia, then by Esmerella. The Asselian Sphaeroschwagerina fauna is underlined by the outburst of epimastoporid dasycladales and phylloid Anchicodiaceae. Microcodium is observed at the contact of the Sphaeroschwagerina moelleri/sphaerica Zones. The overlying and paraconformable Chihsia Limestone is characterized by a Gymnocodium-Gyroporella-Mizzia flora. In most cases, the base of the fusulinid zones, therefore, coincides with an important local floristic change. 72 refs., 4 figs.

  17. Contrasting microbial community changes during mass extinctions at the Middle/Late Permian and Permian/Triassic boundaries

    Science.gov (United States)

    Xie, Shucheng; Algeo, Thomas J.; Zhou, Wenfeng; Ruan, Xiaoyan; Luo, Genming; Huang, Junhua; Yan, Jiaxin

    2017-02-01

    Microbial communities are known to expand as a result of environmental deterioration during mass extinctions, but differences in microbial community changes between extinction events and their underlying causes have received little study to date. Here, we present a systematic investigation of microbial lipid biomarkers spanning ∼20 Myr (Middle Permian to Early Triassic) at Shangsi, South China, to contrast microbial changes associated with the Guadalupian-Lopingian boundary (GLB) and Permian-Triassic boundary (PTB) mass extinctions. High-resolution analysis of the PTB crisis interval reveals a distinct succession of microbial communities based on secular variation in moretanes, 2-methylhopanes, aryl isoprenoids, steranes, n-alkyl cyclohexanes, and other biomarkers. The first episode of the PTB mass extinction (ME1) was associated with increases in red algae and nitrogen-fixing bacteria along with evidence for enhanced wildfires and elevated soil erosion, whereas the second episode was associated with expansions of green sulfur bacteria, nitrogen-fixing bacteria, and acritarchs coinciding with climatic hyperwarming, ocean stratification, and seawater acidification. This pattern of microbial community change suggests that marine environmental deterioration was greater during the second extinction episode (ME2). The GLB shows more limited changes in microbial community composition and more limited environmental deterioration than the PTB, consistent with differences in species-level extinction rates (∼71% vs. 90%, respectively). Microbial biomarker records have the potential to refine our understanding of the nature of these crises and to provide insights concerning possible outcomes of present-day anthropogenic stresses on Earth's ecosystems.

  18. André-Louis Cholesky mathematician, topographer and army officer

    CERN Document Server

    Brezinski, Claude

    2014-01-01

    Outside the professional circles of topography and applied mathematics, the life and work of André-Louis Cholesky (1875–1918) are still relatively unknown to the scientific community. This new book appreciably widens the exposure of his remarkable personal achievements in topography and mathematics to a much larger international audience.   Cholesky is also interesting to historians because he is a perfect representative of the "scientists engineers" that, since the early 19th century, had issued from the French scientific high schools. Because they had received a high level of mathematical education, they were able to innovate in their practice of engineering. In the case of Cholesky, this resulted in original contributions in artillery, topography, numerical analysis and graphical calculation. In addition, the book places his education and works within the history of several European countries through the 17th to 19th centuries.   The book begins with Cholesky's biography, followed by his family’s hi...

  19. Pierre Darriulat is awarded the André Lagarrigue Prize

    CERN Multimedia

    2009-01-01

    Pierre Darriulat at the VATLY Laboratory in Hanoï. Former CERN Research Director, Pierre Darriulat, who is now Professor of Physics at VATLY in Hanoi (Vietnam), has won the 2008 André Lagarrigue Prize. This prize, instituted by the Linear Accelerator Laboratory (LAL) at Orsay under the aegis of the French Physical Society, is awarded to front-line researchers who have had responsibility for machine/detector construction and derived maximum scientific benefit from such projects, performed in a French laboratory or in close collaboration with French groups. Pierre Darriulat has received the award in recognition of his outstanding career at the CEA, at LBL (Berkeley) and at CERN from 1964 onwards. At CERN he managed the experiments at the Intersecting Storage Rings (ISR) before taking charge of the UA2 collaboration from 1980 to 1986, which participated in decisive discoveries at the ppbar collider. In particular, in 1982, the UA2 experiment began observing high trans...

  20. André Gide, Gide & Amrouche. Correspondance (1928-1950)

    OpenAIRE

    Amadessi, Veronica

    2016-01-01

    En 1928, le jeune Jean el-Mouhoub Amrouche captive l’attention d’André Gide dans une lettre qu’il lui adresse personnellement. À cette époque, la réputation de l’auteur de L’Immoraliste ne cesse de grandir, alors que l’expéditeur n’est qu’un «brillant» normalien inconnu au grand public. Il s’agit toutefois d’un jeune kabyle aux idées bien précises, qui exprime, dans cette première missive, sa volonté de se faire le porte-parole de l’identité kabyle tout en préservant son amour pour la France....

  1. Appalachian Piedmont landscapes from the Permian to the Holocene

    Science.gov (United States)

    Cleaves, E.T.

    1989-01-01

    Between the Potomac and Susquehanna Rivers and from the Blue Ridge to the Fall Zone, landscapes of the Piedmont are illustrated for times in the Holocene, Late Wisconsin, Early Miocene, Early Cretaceous, Late Triassic, and Permian. Landscape evolution took place in tectonic settings marked by major plate collisions (Permian), arching and rifting (Late Triassic) and development of the Atlantic passive margin by sea floor spreading (Early Cretaceous). Erosion proceeded concurrently with tectonic uplift and continued after cessation of major tectonic activity. Atlantic Outer Continental Shelf sediments record three major erosional periods: (1) Late Triassic-Early Jurassic; (2) Late Jurassic-Early Cretaceous; and (3) Middle Miocene-Holocene. The Middle Miocene-Holocene pulse is related to neotectonic activity and major climatic fluctuations. In the Piedmont upland the Holocene landscape is interpreted as an upland surface of low relief undergoing dissection. Major rivers and streams are incised into a landscape on which the landforms show a delicate adjustment to rock lithologies. The Fall Zone has apparently evolved from a combination of warping, faulting, and differential erosion since Late Miocene. The periglacial environment of the Late Wisconsin (and earlier glacial epochs) resulted in increased physical erosion and reduced chemical weathering. Even with lowered saprolitization rates, geochemical modeling suggests that 80 m or more of saprolite may have formed since Late Miocene. This volume of saprolite suggests major erosion of upland surfaces and seemingly contradicts available field evidence. Greatly subdued relief characterized the Early Miocene time, near the end of a prolonged interval of tropical morphogenesis. The ancestral Susquehanna and Potomac Rivers occupied approximately their present locations. In Early Cretaceous time local relief may have been as much as 900 m, and a major axial river draining both the Piedmont and Appalachians flowed southeast

  2. An integrated perspective on the Permian-Triassic "Great Dying"

    Science.gov (United States)

    Algeo, T. J.

    2017-12-01

    The 252-Ma end-Permian mass extinction (EPME), marked by the loss of 90% of marine invertebrate species, was the largest biocrisis in Earth history. Intensive study of this "Great Dying" has led to major insights and a broad consensus regarding many aspects of this event. The ultimate trigger is regarded as eruption of the Siberian Traps Large Igneous Province (STLIP), which released large quantities of greenhouse gases (CO2 and CH4) and sulfate aerosols, triggering a catastrophic global warming of 10°C and acidification of both land surfaces and the surface ocean. On land, a massive die-off of vegetation led to a transient episode of rapid soil erosion and a longer-term increase in weathering rates linked to elevated temperatures. In the ocean, widespread anoxia developed concurrently with the EPME, triggered by ocean-surface warming that reduced dissolved oxygen solubility in seawater and that intensified vertical stratification. Expanded anoxia led to massive burial of organic matter and reduced sulfur, although the evidence for this is indirect (C, U and S isotopes); few organic-rich deposits of Early Triassic age have been found, suggesting that organic sedimentation occurred mainly on continental slopes or in the deep ocean. Other aspects of the end-Permian crisis remain under debate. For example, there is no consensus regarding changes in marine productivity levels in the aftermath of the EPME, which would have been stimulated by enhanced subaerial weathering but depressed by reduced overturning circulation-the evidence to date may favor localized positive and negative changes in productivity. Also under scrutiny is evidence for volcanic eruptions and environmental perturbations during the 100 kyr prior to the EPME, which are likely to have occurred but remain poorly dated and quantified. The greatest uncertainty, however, may surround the nature of the proximate kill mechanism(s) during the EPME. Many hypotheses have been advanced including mechanisms

  3. Väitlus tumma tekstiga : Hans Anton Schults ja Andres Saal / Katre Kikas

    Index Scriptorium Estoniae

    Kikas, Katre

    2006-01-01

    Artiklis käsitletakse H. A. Schults'i (1866-1905) 1903. a. Jakob Hurdale saadetud kirjutisi, kus ta polemiseerib oma kaasaegse Andres Saaliga arutledes "vanade eestlaste" moraali, rahvuse ja religiooni teemal

  4. Läänemere strateegia arvestab kodanike ettepanekutega / Jose Palma Andres ; interv. Erkki Bahovski

    Index Scriptorium Estoniae

    Palma Andres, Jose

    2008-01-01

    Euroopa Komisjoni regionaalpoliitika peadirektoraadi direktor Jose Palma Andres vastab küsimustele, mis puudutavad avalikku debatti Läänemere strateegia üle ning Venemaa partnerlust Läänemere strateegias. Lisa: [Läänemere strateegia

  5. Tallinna idee / Andres Alver, Ott Alver, Marten Kaevats ; intervjueerinud Margit Mutso ; kommenteerinud Douglas Gordon

    Index Scriptorium Estoniae

    Alver, Andres, 1953-

    2011-01-01

    17. veebruaril esitleti raamatut "Tallinna idee", mis on koostatud Eesti Kunstiakadeemia 4. kursuse arhitektuuritudengite kursuseprojektide põhjal. Tallinna teemal vestlevad tudengid Ott Alver ja Marten Kaevats ning nende juhendaja professor Andres Alver

  6. Film, ruum ja narratiiv : "Mis juhtus Andres Lapeteusega?" ning "Viini postmark" / Eva Näripea

    Index Scriptorium Estoniae

    Näripea, Eva, 1980-

    2011-01-01

    Analüüsitakse narratiivi aegruumi loomise viise juhtumi analüüsi vormis, vaadeldes kaht eesti mängufilmi : G. Kromanovi "Mis juhtus Andres Lapeteusega?" (Tallinnfilm, 1966) ja Veljo Käsperi "Viini postmark" (Tallinnfilm, 1967)

  7. Film, ruum ja narratiiv : "Mis juhtus Andres Lapeteusega?" ning "Viini postmark" / Eva Näripea

    Index Scriptorium Estoniae

    Näripea, Eva

    2006-01-01

    Analüüsitakse narratiivi aegruumi loomise viise juhtumi analüüsi vormis, vaadeldes kaht eesti mängufilmi : G. Kromanovi "Mis juhtus Andres Lapeteusega?" (Tallinnfilm, 1966) ja Veljo Käsperi "Viini postmark" (Tallinnfilm, 1967)

  8. Noblessneri Loomemaja = Noblessner Creative house / Rasmus Tamme, Jaanus Saarepera, Eero Jürgenson, Andres Jomp

    Index Scriptorium Estoniae

    2015-01-01

    Noblessneri Loomemaja Tallinnas Tööstuse 48/Peetri 11, valminud 2014. Arhitektid Rasmus Tamme, Jaanus Saarepera (ARS Projekt), sisearhitektid Eero Jürgenson, Andres Jomp (ARS Projekt). 2014. aasta Kultuurkapitali Arhitektuuripreemia kandidaat

  9. Giving Voice: Narrating silence, history and memory in André Brink ...

    African Journals Online (AJOL)

    Giving Voice: Narrating silence, history and memory in André Brink\\'s The Other Side of Silence and Before I Forget. ... Both narrators, though, draw attention to the problems associated with this reconstructive and potentially ... Article Metrics.

  10. André-Philip Lemke näitus Tallinnas / Mari Laaniste

    Index Scriptorium Estoniae

    Laaniste, Mari, 1977-

    1998-01-01

    Saksa kunstniku André-Philip Lemke (1970) näitus "Üks-üks armsa Jumala kasuks" 17. augustist Saksa Kultuuriinstituudis. Tööd on valgele paberile tavalise sinise pastapliiatsiga kirjutatud-joonistatud

  11. Korterelamu Tallinnas Weizenbergi 29 = Apartment Building in Tallinn, at 29 Weizenbergi Street / Andres Alver

    Index Scriptorium Estoniae

    Alver, Andres, 1953-

    2001-01-01

    Puitvoodriga betoonist kastjas hoone. Projekteerija Alver Trummal Arhitektid. Arhitektid Andres Alver ja Tarmo Laht. Eriosad: Eesti Projekt. Projekt 1998, valmis 2000. 3 ill.: põhiplaan, välisvaade, Pille Lausmäe kujundatud korteri vaade

  12. Eestlane juhib Ukrainas EBRD investeeringuid / Andre Küüsvek ; interv. Henrik Ilves

    Index Scriptorium Estoniae

    Küüsvek, Andre

    2008-01-01

    Seni Euroopa Rekonstruktsiooni- ja Arengupanga (EBRD) Kasahstani osakonda juhtinud Andre Küüsvek valiti juhtima EBRD investeeringuid Ukrainas. Tänavu on plaanis investeerida Ukrainas 1,5 mld. dollarit

  13. Põlvas tuli esitusele Andre Laine 29 tantsu / Mati Määrits

    Index Scriptorium Estoniae

    Määrits, Mati, 1958-

    2008-01-01

    Põlva Kultuuri- ja Huvikeskuses sai näha Põlvamaa Koolitantsu maakondlikku eelvooru. 52st tantsust 29 tantsu autor on Andre Laine. Kommenteerib ka Tartu Ülikooli Viljandi Kultuuriakadeemia lavakunstide osakonna tantsukunsti õppejõud Kai Valtna

  14. Raio Piiroja : mängijatest ei suudetud maksimumi pigistada / Andres Kalvik

    Index Scriptorium Estoniae

    Kalvik, Andres, 1982-

    2007-01-01

    Vt. ka Postimees : na russkom jazõke 19. nov., lk. 13. Eesti koondis võlgneb EM-valikturniiri viimase kohtumise 2:0 Andorra üle suuresti Andres Operile. Kommenteerib Andorra koondise peatreener David Rodrigo

  15. Haapsalu Gümnaasiumi võimla = Haapsalu Gymnasium Gym / Andres Alver

    Index Scriptorium Estoniae

    Alver, Andres, 1953-

    2001-01-01

    Projekteerija: Alver Trummal Arhitektid OÜ. Arhitektid Andres Alver, Sven Koppel, Tarmo Laht, Ulla Mets. Projekt 1998-1999, hoone valmis 2001. 11 ill.: asendi- ja korruse plaan, pikilõige, välis- ja sisevaated

  16. Proceedings of the 3. Summer School Jorge Andre Swieca in Nuclear Physics

    International Nuclear Information System (INIS)

    Lima, C.L.; Nemes, M.C.; Wolynec, E.

    1987-01-01

    This book contents the lectures and seminars presented during the Jorge Andre Swieca III Summer School-Nuclear Physics 1987 which happened in February 1987 in Itaipava - Rio de Janeiro - Brazil. (A.C.A.S.) [pt

  17. Composition and palaeogeographic position of the Early Permian Jambi flora from Sumatra

    NARCIS (Netherlands)

    Waveren, van I.M.; Iskandar, E.A.P.; Booi, M.; Konijnenburg-van Cittert, van J.H.A.

    2007-01-01

    A preliminary taxonomic revision of the Early Permian Jambi flora results in a lower number of taxa, a number of new determinations and several new combinations (Dicranophyllum molle (Jongmans & Gothan) comb. nov., Oligocarpia posthumii (Jongmans & Gothan) nov. comb., Callipteridium strictinervis

  18. Prolonged Permian–Triassic ecological crisis recorded by molluscan dominance in Late Permian offshore assemblages

    Science.gov (United States)

    Clapham, Matthew E.; Bottjer, David J.

    2007-01-01

    The end-Permian mass extinction was the largest biotic crisis in the history of animal life, eliminating as many as 95% of all species and dramatically altering the ecological structure of marine communities. Although the causes of this pronounced ecosystem shift have been widely debated, the broad consensus based on inferences from global taxonomic diversity patterns suggests that the shift from abundant brachiopods to dominant molluscs was abrupt and largely driven by the catastrophic effects of the end-Permian mass extinction. Here we analyze relative abundance counts of >33,000 fossil individuals from 24 silicified Middle and Late Permian paleocommunities, documenting a substantial ecological shift to numerical dominance by molluscs in the Late Permian, before the major taxonomic shift at the end-Permian mass extinction. This ecological change was coincident with the development of fluctuating anoxic conditions in deep marine basins, suggesting that numerical dominance by more tolerant molluscs may have been driven by variably stressful environmental conditions. Recognition of substantial ecological deterioration in the Late Permian also implies that the end-Permian extinction was the climax of a protracted environmental crisis. Although the Late Permian shift to molluscan dominance was a pronounced ecological change, quantitative counts of 847 Carboniferous–Cretaceous collections from the Paleobiology Database indicate that it was only the first stage in a stepwise transition that culminated with the final shift to molluscan dominance in the Late Jurassic. Therefore, the ecological transition from brachiopods to bivalves was more protracted and complex than their simple Permian–Triassic switch in diversity. PMID:17664426

  19. DAGMARITA SHHREZAENSIS N. SP. GLOBIVALVULINID FORAMINIFER, (WUCHIAPINGIAN, LATE PERMIAN, CENTRAL IRAN

    Directory of Open Access Journals (Sweden)

    PARVIN MOHTAT-AGHAI

    2003-03-01

    Full Text Available In the course of an investigation on the major mass extintion event near the P/T boundary, in the vicinity of Shahreza (South Isfahan in Iran, a stratigraphically significant new species of foraminifera (Dagmarita shahreaensis n. sp. has been discovered in the Wuchiapingian/Dzhulfian (Late Permian of central Iran (Hambast Formation. This new species is described and emplaced in the phylogeny of the globivalvulinid foraminifera, which evolved rapidly during the Middle/Late Permian

  20. Feasibility study of heavy oil recovery in the Permian Basin (Texas and New Mexico)

    International Nuclear Information System (INIS)

    Olsen, D.K.; Johnson, W.I.

    1993-05-01

    This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Permian Basin of West Texas and Southeastern New Mexico is made up of the Midland, Delaware, Val Verde, and Kerr Basins; the Northwestern, Eastern, and Southern shelves; the Central Basin Platform, and the Sheffield Channel. The present day Permian Basin was one sedimentary basin until uplift and subsidence occurred during Pennsylvanian and early Permian Age to create the configuration of the basins, shelves, and platform of today. The basin has been a major light oil producing area served by an extensive pipeline network connected to refineries designed to process light sweet and limited sour crude oil. Limited resources of heavy oil (10'' to 20'' API gravity) occurs in both carbonate and sandstone reservoirs of Permian and Cretaceous Age. The largest cumulative heavy oil production comes from fluvial sandstones of the Cretaceous Trinity Group. Permian heavy oil is principally paraffinic and thus commands a higher price than asphaltic California heavy oil. Heavy oil in deeper reservoirs has solution gas and low viscosity and thus can be produced by primary and by waterflooding. Because of the nature of the resource, the Permian Basin should not be considered a major heavy oil producing area

  1. Alkohol, andre rusmidler og vold i epidemiologisk perspektiv

    Directory of Open Access Journals (Sweden)

    Kai Pernanen

    2009-10-01

    Full Text Available  SAMMENDRAGDen medisinske interessen for vold og voldsskader har økt kraftig i løpet av de siste to tiårene. Det epidemiologiskeperspektivet på vold har blitt forsterket og et mer etiologisk og preventivt syn på volden er mere merkbarinnenfor sosialmedisinsk forskning. Alkoholen er en etiologisk faktor som har vist seg å være forbundet med voldi de aller fleste samfunn. I denne artikkelen beskrives de viktigste epidemiologiske metodene og funnene i studietav alkoholens sammenheng med vold. Denne sammenhengen har vist seg ikke å være direkte, men er avhengig aven rekke andre faktorer, og noen forskjellige typer av kausal avhengighet beskrives i artikkelen. Den epidemiologiskeforskningen om andre rusmidlers sammenheng med vold er betydelig mindre omfattende enn den er foralkohol. Det er også åpenbart at andre rusmidler ikke er like sterkt sammenknyttet med vold som alkoholen.Pernanen K. Alcohol, other drugs, and violence in an epidemiological perspective.Nor J Epidemiol ENGLISH SUMMARYThe public health approach to violence has become increasingly accepted during the last couple of decades. Thishas led to more epidemiological research into violence, and a stronger medical interest in the etiology and preventionof violence. However, epidemiological research on the prevalence of violence in different societies is stillmainly criminological in nature, being based on information about violence that has come to the attention of thepolice or processed in the courts. The study of the relationship between alcohol use and violent behaviour is alsopredominantly based on police and court materials, although an increasing number of emergency room andhospitalization studies have examined the role of alcohol in injuries caused by violence.There are two basic methodological approaches in the study of the relationship between alcohol use andviolence. The alcohol-involvement studies estimate the extent to which drinking by the offender or the victim

  2. Permian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia: I. Genera Pecopteris and Asterotheca

    Directory of Open Access Journals (Sweden)

    Carlos E. L. Vieira

    2004-03-01

    Full Text Available Fossil plants belonging to the morphogenera Glossopteris, Pecopteris and Asterotheca were collected from the upper part of the Chutani Formation (Titicaca Group, near the town of San Pablo de Tiquina, on the southeastern shore of Lake Titicaca (northern Altiplano, Bolivia. Here we report the analysis of fern-type foliage found at this location. Three species of pecopterid fronds are identified: Pecopteris dolianitii Rohn and Rösler, P. cf. P. cadeadensis Rohn and Rösler, and P. cf. P. pedrasica Read. All these species are typically found in Permian deposits of the Paraná Basin in southern Brazil. Despite the poor preservation of the material, a fertile specimen could be studied and was determined as Asterotheca sp. The paleoenvironmental and paleoecological implications of this new find are briefly analyzed.Plantas fósseis, pertencentes aos morfo-gêneros Glossopteris, Pecopteris e Asterotheca, foram coletadas na porção superior da seção aflorante da Formação Chutani, próxima ao povoado de San Pablo de Tiquina, sudeste do lago Titicaca (Altiplano norte, Bolívia. Este trabalho analisa folhagens do tipo feto encontradas neste sítio. Entre os espécimes estéreis, três espécies de frondes pecopterídeas foram identificadas: Pecopteris dolianiti, P. cf. cadeadensis e P. cf. pedrasica. Todas essas espécies eram até agora restritas aos depósitos permianos da Bacia do Paraná. A despeito do estado de preservação ruim do material, um espécime fértil pôde ser determinado como pertencente ao gênero Asterotheca. Implicações paleoambientais e paleoecológicas deste novo achado são brevemente analisadas.

  3. Andres Puustusmaa - mees nagu jalgratas ehk Seitseteist kevadist hetke enne Moskva rongi väljumist / Andres Puustusmaa ; interv. Margus Mikomägi

    Index Scriptorium Estoniae

    Puustusmaa, Andres

    2008-01-01

    Venemaal tegutseva Eestist pärit režissööri Andres Puustusmaa mängufilm "18-14" esilinastub 10. jaanuaril Eestis. Lisaks tõlge filmi tutvustavast tekstist (www.1814.ru) : "Tsarskoje Selo Kõrilõikaja ja lütseumi kasvandikud". Artikkel rubriigis "Teatriküljed 1/25"

  4. Afståelsesret og andre former for lejerskifte

    DEFF Research Database (Denmark)

    Faber, Louise

    Afståelsesret og andre former for lejerskifte indeholder en analyse af lejerens adgang til at overdrage sit lejemål til en ny lejer.  Bogen bygger på forfatterens ph.d. afhandling.  Bogen er opdelt i to dele, en almindelig del, og en speciel del. I bogens almindelige del undersøges spørgsmålet, om...... lejerens ret til lejerskifte, når der ikke er taget stilling i lejeaftalen. Her fastlægges baggrundsretten med udgangspunkt i de obligationsretlige grundsætninger. I denne kontekst beskrives fremlejeretten, lejerens nærtståendes forsættelses- eller overtagelsesret ved lejrens død, skilsmisse m.v., og...... tillige retstillingen når lejeaftalen er indgået med flere lejere, et I/S, et ApS eller et A/S.  I bogens specielle del undersøges lejerens ret til at afstå eller genindtræde lejeforholdet, når lejerens har afståelsesret og genindtrædelsesret ifølge af lejeaftalen. Denne undersøgelse berører udlejerens...

  5. Arturo Andrés Roig, lector de Spinoza Arturo Andrés Roig, Spinoza Reader

    Directory of Open Access Journals (Sweden)

    Gerardo Oviedo

    2010-06-01

    Full Text Available La categoría spinoziana de conatus ocupa un puesto central en la arquitectónica discursiva de la filosofía práctica de Arturo Andrés Roig. Se trata de un fundamento previo del saber práctico-moral que oficia de figura explicativa originaria, pues el conatus concierne a una dimensión primaria de los entes. Su status teórico no se reduce por tanto a reconocer un aspecto antropológico entre otros, sino que adquiere un carácter vertebrador en el conjunto de las estrategias de fundamentación de la idea de "moral emergente" propuesta por nuestro filósofo. Nosotros estimamos que la condición ontológica del conatus es una instancia determinante de los planteos éticos y políticos de Arturo Roig. Dicha inflexión spinozista tan patente, sin embargo, no es tenida suficientemente en cuenta en algunas lecturas especializadas de la Argentina. En consecuencia, nos proponemos en primer término destacar la función constructiva que ese momento spinoziano posee en el pensamiento del maestro mendocino, ciñéndonos a un tratamiento de los textos en donde esa fuerza conceptual se torna más visible, sin excluir por cierto otros tratamientos concomitantes. Ello nos permitirá, en un segundo nivel más historiográfico de análisis, revalorar la recepción de Spinoza en los escritos de Arturo Roig.The Spinoza conatus category occupies a central place in the architectural discourse of practical philosophy of Arturo Andres Roig. This is a preliminary basis of practical knowledge and moral figure that offers originating explanation, as the conatus concerns a primary dimension of entities. Its theoretical status is not reduced only to recognizing anthropological aspect among others, but acquires a backbone in the set of strategies to substantiate the idea of "emerging moral" given by our philosopher. We believe that the ontological status is an instance of conatus determinant of ethical and political layout of Arturo Roig. Spinoza said turning so clearly

  6. Palinspastic reconstruction and geological evolution of Permian residual marine basins bordering China and Mongolia

    Directory of Open Access Journals (Sweden)

    Gen-Yao Wu

    2014-04-01

    Full Text Available One main feature of the tectono-paleogeographic evolution of the southern branch of the Paleo-Asian Ocean was that there developed residual marine basins in former backarc/forearc regions after the disappearance of oceanic crust. The paper illustrates the viewpoint taking the evolution of Dalandzadgad and Solonker oceanic basins as examples. The Dalandzadgad ocean subducted southwards during the Silurian-Devonian, created an intra-oceanic arc and a backarc basin in southern Mongolia. In addition, a continent marginal arc formed along the national boundary between China and Mongolia, the south of which was a backarc basin. The oceanic basin closed and arc–arc (continent collision occurred during the early Early Permian, followed by two residual marine basins developing in the former backarc regions, named the South Gobi Basin in southern Mongolia and the Guaizihu Basin in western Inner Mongolia. The Solonker ocean subducted southwards and finally disappeared during the early Middle Permian. Afterwards, two residual marine basins occurred in northern China, the Zhesi Basin being situated in the former backarc region and the Wujiatun Basin in the former forearc region. The late Middle Permian was the most optimum period for the developing residual marine basins, when they covered a vast area. The basin evolution differentiated during the early Late Permian, with a general trend of uplift in the east and of subsidence in the west. The Upper Permian in the South Gobi Basin was characterized by coal-bearing strata hosting economically valuable coal fields. A transgression invaded westwards and the Chandmani-Bayanleg Basin was created in southwest Mongolia during the middle-late stage of the Late Permian. Correspondingly, the coal formation entered a flourishing time, with thick coal beds and sedimentary interbeds. All of these basins, namely, both the marine and nonmarine residual basins, reversed and closed by the end of Permian.

  7. Structural changes of marine communities over the Permian-Triassic transition: Ecologically assessing the end-Permian mass extinction and its aftermath

    Science.gov (United States)

    Chen, Zhong-Qiang; Tong, Jinnan; Liao, Zhuo-Ting; Chen, Jing

    2010-08-01

    The Permian/Triassic (P/Tr) transition is ecologically assessed based on examining 23 shelly communities from five shallow platform, ramp and shelf basin facies Permian-Triassic boundary (PTB) sections in South China. The shelly communities have undergone two major collapses coinciding with the two episodes of the end-Permian mass extinction. The first P/Tr extinction event devastated shelly communities in all types of settings to some extent. The basin communities have been more severely impacted than both platform and ramp communities. The survival faunas have rebounded more rapidly in shallow niches than in relatively deep habitats. The second P/Tr crisis destroyed the survival communities in shallow setting and had little impact on the basin communities in terms of community structures. The early Griesbachian communities are overall low-diversity and high-dominance. The governorship switch from brachiopods to bivalves in marine communities has been facilitated by two pulses of the end-Permian mass extinction and the whole takeover process took about 200 ka across the P/Tr boundary. Bivalve ecologic takeover initially occurred immediately after the first P/Tr extinction in shallow water habitats and was eventually completed in all niches after the second P/Tr event. Some post-extinction communities have the irregular rarefaction curves due to the unusual community structures rather than sampling intensities.

  8. OIL RESERVOIR CHARACTERIZATION AND CO2 INJECTION MONITORING IN THE PERMIAN BASIN WITH CROSSWELL ELECTROMAGNETIC IMAGING

    Energy Technology Data Exchange (ETDEWEB)

    Michael Wilt

    2004-02-01

    Substantial petroleum reserves exist in US oil fields that cannot be produced economically, at current prices, unless improvements in technology are forthcoming. Recovery of these reserves is vital to US economic and security interests as it lessens our dependence on foreign sources and keeps our domestic petroleum industry vital. Several new technologies have emerged that may improve the situation. The first is a series of new flooding techniques to re-pressurize reservoirs and improve the recovery. Of these the most promising is miscible CO{sub 2} flooding, which has been used in several US petroleum basins. The second is the emergence of new monitoring technologies to track and help manage this injection. One of the major players in here is crosswell electromagnetics, which has a proven sensitivity to reservoir fluids. In this project, we are applying the crosswell EM technology to a CO{sub 2} flood in the Permian Basin oil fields of New Mexico. With our partner ChevronTexaco, we are testing the suitability of using EM for tracking the flow of injected CO{sub 2} through the San Andreas reservoir in the Vacuum field in New Mexico. The project consisted of three phases, the first of which was a preliminary field test at Vacuum, where a prototype system was tested in oil field conditions including widely spaced wells with steel casing. The results, although useful, demonstrated that the older technology was not suitable for practical deployment. In the second phase of the project, we developed a much more powerful and robust field system capable of collecting and interpreting field data through steel-cased wells. The final phase of the project involved applying this system in field tests in the US and overseas. Results for tests in steam and water floods showed remarkable capability to image between steel wells and provided images that helped understand the geology and ongoing flood and helped better manage the field. The future of this technology is indeed bright

  9. CERN celebrates André Martin’s 80th birthday

    CERN Multimedia

    2009-01-01

    André Martin, pictured at the ceremony held in honour of his 80th birthday. On 27 August 2009 CERN’s Main Auditorium was the venue for a celebration in honour of André Martin’s 80th birthday. Regarded as one of the most important theoretical physicists of his generation, André Martin is one of CERN’s most distinguished figures. The celebration began with a conference, followed by a concert and a reception. After the conference, André Martin made an emotional speech looking back over his fifty-year career and paying tribute to all those who had made important contributions during his time at CERN. "I was extremely happy, and I am very touched by this marvellous celebration you have organised for me. It was a wonderful idea, and I very much enjoyed the concert of Blandine Eynaud and John Devore. My wife, Schu, and I love the music of Gabriel Fauré", he said at the end. André Martin j...

  10. Diagenesis of Permian alluvial fan deposits of Northern Switzerland

    International Nuclear Information System (INIS)

    Bluem, W.

    1987-01-01

    Fine-grained sandstones of Permian alluvial fan deposits from three Nagra boreholes (Weiach, Riniken, Kaisten) and an exploration well, drilled at Wintersingen are clast supported, moderately sorted arkosic greywackes containing typically 2-20 % clayey matrix. Petrographic studies indicate that the origin of this clayey matrix is postdepositional. Mechanical infiltration of fines and diagenetic reddening of detrital and authigenic iron oxides are the earliest recorded events. Additionally, nodular calcites of calcrete origin and fibrous illitic clays are also ascribed to the eogenetic environment. The present strong compaction fabric results from general lack of eogenetic framework supporting cements. During mesogenesis, secondary porosity was generated through partial removal of early calcite. At the same time, a first generation of syntaxial quartz cementation and a subsequent fibrous illite authigenesis took place. Leaching of detrital K-feldspars post-dating compaction is recorded throughout the studied boreholes. The following burial diagenetic events differ between the various boreholes: in Weiach and Wintersingen kaolinite, illite, prismatic quartz and ankerite/siderite are recorded; in Riniken K-feldspar, illite, prismatic quartz and dolomite developed; whilst in Kaisten K-feldspar and microcrystalline quartz-cement dominate. These differences reflect the chemistry, pH and ionic strength of the pore fluids. Filling of veins by dolomite/ankerite, iron-rich and subsequent iron-poor calcite is the latest recorded event. (author) 21 refs., 10 figs., 1 tab

  11. Radon in the Creswell Crags Permian limestone caves

    International Nuclear Information System (INIS)

    Gillmore, G.K.; Phillips, P.S.; Denman, A.R.; Gilbertson, D.D.

    2002-01-01

    An investigation of radon levels in the caves of Creswell Crags, Derbyshire, an important Site of Special Scientific Interest (SSSI) shows that the Lower Magnesian Limestone (Permian) caves have moderate to raised radon gas levels (27-7800 Bq m -3 ) which generally increase with increasing distance into the caves from the entrance regions. This feature is partly explained in terms of cave ventilation and topography. While these levels are generally below the Action Level in the workplace (400 Bq m -3 in the UK), they are above the Action Level for domestic properties (200 Bq m -3 ). Creswell Crags has approximately 40,000 visitors per year and therefore a quantification of effective dose is important for both visitors and guides to the Robin Hood show cave. Due to short exposure times the dose received by visitors is low (0.0016 mSv/visit) and regulations concerning exposure are not contravened. Similarly, the dose received by guides is fairly low (0.4 mSv/annum) due in part to current working practice. However, the risk to researchers entering the more inaccessible areas of the cave system is higher (0.06 mSv/visit). This survey also investigated the effect of seasonal variations on recorded radon concentration. From this work summer to winter ratios of between 1.1 and 9.51 were determined for different locations within the largest cave system

  12. Electrokinetic transport behavior of phenol in upper Permian soils

    Energy Technology Data Exchange (ETDEWEB)

    Haus, R.; Zorn, R.; Czurda, K.; Ruthe, H. [Dept. of Applied Geology, Univ. Karlsruhe (Germany)

    2001-07-01

    Electrokinetic experiments with upper Permian, phenol contaminated soils ('Solaris'-area Chemnitz) were performed. Bench scale results show the successful removal of phenol. The developing soil-pH during electroremediation tests is found to affect the transport behavior of phenol strongly. If buffer solutions are used at the electrode compartments, phenol could be removed from the soils. By neutralizing the generating hydrogen ions at the anode reservoir the hydroxyl ions developing at the cathode by the electrolysis of water enter the soil and propagate to the anode by increasing the soil pH. The pH dependent dehydroxylation of phenol promotes the electromigration of negative charged phenolate ions from the cathode to the anode. At the anode the coupling of phenoxyl-radicals supports the formation of non toxic, water insoluble polyoxyphenylene by electro-polymerization. In the case of buffering the pH at the cathode uncharged phenol is transported by electroosmosis from the anode to the cathode because of the nonexisting base front and the unhindered production of hydrogen ions at the anode. (orig.)

  13. Ocean redox change at the Permian-Triassic mass extinction

    DEFF Research Database (Denmark)

    Ruhl, Micha; Bjerrum, Christian J.; Canfield, Donald Eugene

    2013-01-01

    Earth’s history is marked by multiple events of ocean anoxia developing along continental margins and po¬tentially into the open ocean realm. These events of¬ten coincide with the emplacement of large igneous provinces (LIPs) on continents, major perturbations of global geochemical cycles and mar...... these oceanographic changes to similar observations for the Triassic-Jurassic mass extinction and discuss environmental forcing, poten¬tially inherent to major volcanic events and leading to global environmental change and extinction...... ocean redox change over the largest mass extinction event in Earth history, at the Permian-Tri¬assic boundary (at ~252 Ma). This event is marked by a major perturbation in the global exogenic carbon cycle (and associated major negative carbon isotope excursion (CIE)), likely initiated by carbon...... (anoxic but not euxinic) coinciding with the main extinction event. Molybdenum enrichments, often indicative for freely available sulfide in the water-column, only occur dur¬ing the second phase of euxinia. This pattern of ocean redox-change in Svalbard direct¬ly reflects similar trends in Greenland...

  14. Simulated warm polar currents during the middle Permian

    Energy Technology Data Exchange (ETDEWEB)

    Winguth, A M.E.; Kutzbach, J E [Wisconsin Univ., Madison, WI (USA). Center for Climatic Research; Heinze, C; Maier-Reimer, E; Mikolajewicz, U [Max-Planck-Institut fuer Meteorologie, Hamburg (Germany); Rowley, D; Rees, A; Ziegler, A M [Chicago Univ., IL (United States). Dept. of Geophysical Sciences

    2001-05-01

    During Permian Stage 6 (Wordian, Kazanian) the Pangaean supercontinent was surrounded by a superocean - Panthalassa. An ocean general circulation model has been coupled to an atmospheric energy balance model to simulate the sensitivity of the Wordian climate ({proportional_to}265 million years ago) to changes in greenhouse gas concentrations, high latitude geography, and Earth orbital configurations. The model shows a high sensitivity of the ocean circulation to changes in the greenhouse gas forcing, ranging from a forceful southern circulation at low CO{sub 2} concentration (present level) to a more symmetric circulation cell with deep water formation in both hemispheres at high CO{sub 2} concentration (8 x present level). The simulated climate with 4 x present level CO{sub 2} concentration agrees generally well with climate-sensitive sediments and phytogeographic patterns. In this experiment, the model simulates strong subtropical gyres with similarities to the modern South Pacific circulation and moderate surface temperatures on the southern continent Gondwana, resulting from a strong poleward heat transport in the ocean. An even more moderate climate can be generated if high latitude land is removed so that ocean currents can penetrate into the polar regions or if orbital configurations favor high summer insolation over Gondwana. (orig.)

  15. San Francisco Accelerator Conference

    International Nuclear Information System (INIS)

    Southworth, Brian

    1991-01-01

    'Where are today's challenges in accelerator physics?' was the theme of the open session at the San Francisco meeting, the largest ever gathering of accelerator physicists and engineers

  16. Bioessential element-depleted ocean following the euxinic maximum of the end-Permian mass extinction

    Science.gov (United States)

    Takahashi, Satoshi; Yamasaki, Shin-ichi; Ogawa, Yasumasa; Kimura, Kazuhiko; Kaiho, Kunio; Yoshida, Takeyoshi; Tsuchiya, Noriyoshi

    2014-05-01

    We describe variations in trace element compositions that occurred on the deep seafloor of palaeo-superocean Panthalassa during the end-Permian mass extinction based on samples of sedimentary rock from one of the most continuous Permian-Triassic boundary sections of the pelagic deep sea exposed in north-eastern Japan. Our measurements revealed low manganese (Mn) enrichment factor (normalised by the composition of the average upper continental crust) and high cerium anomaly values throughout the section, suggesting that a reducing condition already existed in the depositional environment in the Changhsingian (Late Permian). Other redox-sensitive trace-element (vanadium [V], chromium [Cr], molybdenum [Mo], and uranium [U]) enrichment factors provide a detailed redox history ranging from the upper Permian to the end of the Permian. A single V increase (representing the first reduction state of a two-step V reduction process) detected in uppermost Changhsingian chert beds suggests development into a mildly reducing deep-sea condition less than 1 million years before the end-Permian mass extinction. Subsequently, a more reducing condition, inferred from increases in Cr, V, and Mo, developed in overlying Changhsingian grey siliceous claystone beds. The most reducing sulphidic condition is recognised by the highest peaks of Mo and V (second reduction state) in the uppermost siliceous claystone and overlying lowermost black claystone beds, in accordance with the end-Permian mass extinction event. This significant increase in Mo in the upper Changhsingian led to a high Mo/U ratio, much larger than that of modern sulphidic ocean regions. This trend suggests that sulphidic water conditions developed both at the sediment-water interface and in the water column. Above the end-Permian mass extinction horizon, Mo, V and Cr decrease significantly. On this trend, we provide an interpretation of drawdown of these elements in seawater after the massive element precipitation event

  17. Permian and Triassic microfloral assemblages from the Blue Nile Basin, central Ethiopia

    Science.gov (United States)

    Dawit, Enkurie L.

    2014-11-01

    Palynological investigation was carried out on surface samples from up to 400 m thick continental siliciclastic sediments, here referred to as “Fincha Sandstone”, in the Blue Nile Basin, central Ethiopia. One hundred sixty species were identified from 15 productive samples collected along a continuous road-cut exposure. Six informal palynological assemblage zones have been identified. These assemblage zones, in ascending order, are: “Central Ethiopian Permian Assemblage Zone - CEPAZ I”, earliest Permian (Asselian-Sakmarian); “CEPAZ II”, late Early Permian (Artinskian-Kungurian); CEPAZ III - Late Permian (Kazanian-Tatarian); “CETAZ IV”, Lower Triassic (Olenekian Induan); “CETAZ V”, Middle Triassic (Anisian Ladinian); “CETAZ VI”, Late Triassic (Carnian Norian). Tentative age ranges proposed herein are compared with faunally calibrated palynological zones in Gondwana. The overall composition and vertical distribution of miospores throughout the studied section reveals a wide variation both qualitatively and quantitatively. The high frequency of monosaccate pollen in CEPAZ I may reflect a Glossopterid-dominated upland flora in the earliest Permian. The succeeding zone is dominated by straite/taeniate disaccate pollen and polyplicates, suggesting a notable increase in diversity of glossopterids. The decline in the diversity of taeniate disaccate pollen and the concomitant rise in abundance of non-taeniate disaccates in CEPAZ III may suggest the decline in Glossopteris diversity, though no additional evidence is available to equate this change with End-Permian extinction. More diverse and dominant non-taeniate, disaccate, seed fern pollen assignable to FalcisporitesAlisporites in CETAZ IV may represent an earliest Triassic recovery flora. The introduction of new disaccate forms with thick, rigid sacci, such as Staurosaccites and Cuneatisporites, in CETAZ V and VI may indicate the emergence of new gymnospermous plants that might have favourably

  18. 40Ar/ 39Ar dating of Late Permian evaporites, southeastern New Mexico, USA

    Science.gov (United States)

    Renne, Paul R.; Sharp, Warren D.; Montañez, Isabel P.; Becker, Tim A.; Zierenberg, Robert A.

    2001-12-01

    40Ar/ 39Ar dating of the potassium-magnesium sulfate mineral langbeinite from Permian evaporites of the Salado formation near Carlsbad, New Mexico, provides quantitative evidence that some salts in these deposits have not recrystallized for 251 Myr since deposition. Survival of Permian salts supports the possibility that Bacillus bacteria recovered from nearby halite was isolated in a closed system and represents a sample of uncontaminated Permian life. Local recrystallization of langbeinite and other nearby minerals is also indicated by the dating, suggesting both the need and the opportunity to document closed system behavior more rigorously. The shoaling and desiccation event recorded by the Salado formation began at least 1 Myr before the Permian-Triassic boundary. Temporal correlation of the Salado with the Zechstein evaporites of north-central Europe supports previously inferred regression models for the origin of these deposits. Significant paleoenvironmental change at the Permian-Triassic boundary thus occurred on a time scale more protracted than that implied by geologically instantaneous events such as bolide impacts.

  19. Geochemical characteristics of Carboniferous-Permian coal-formed gas in Bohai Bay Basin

    Energy Technology Data Exchange (ETDEWEB)

    Shipeng Huang; Fengrong Liao; Xiaoqi Wu [PetroChina, Beijing (China). Research Institute of Petroleum Exploration & Development

    2010-03-15

    Coal-formed gas reservoirs have been found in several depressions in Bohai Bay Basin. The gas was mainly generated by the Carboniferous-Permian coal measures, which are good source rocks. The exploration of coal-formed gas has a broad prospect. The main reservoirs of the coal-formed gas are Ordovician, Carboniferous-Permian, and Paleogene stratum. Coal-formed gas in the Bohai Bay Basin is chiefly composed of hydrocarbon gases. The percentage content of carbon dioxide is more than that of the nitrogen gas. The stable carbon isotope values of the hydrocarbon gases of different depressions and different reservoirs usually reversed. The reversed values of gas samples account for 52.1% of all the samples. Reversion values of the carbon isotope are mainly because of the mixing of gases from same source rocks but with different maturity. Among the three main reservoirs, coal-formed gas preserved in Paleogene stratum has the heaviest carbon isotope, the second is the gas in Carboniferous-Permian stratum, and the Ordovician gas possesses the lightest carbon isotope. Based on the analysis of the characteristics of carbon isotope of hydrocarbon gases in well Qishen-1 and the distribution of the Carboniferous-Permian coal measures, the gas of the well is derived from the high-matured Carboniferous-Permian coal measures.

  20. Paratingia wudensis sp. nov., a whole noeggerathialean plant preserved in an earliest Permian air fall tuff in Inner Mongolia, China

    Czech Academy of Sciences Publication Activity Database

    Wang, J.; Pfefferkorn, H. W.; Bek, Jiří

    2009-01-01

    Roč. 96, č. 9 (2009), s. 1676-1689 ISSN 0002-9122 R&D Projects: GA AV ČR IAA301110701 Institutional research plan: CEZ:AV0Z30130516 Keywords : noeggerathiales * whole plant reconstruction * in situ spores * Permian * Permian (China) Subject RIV: EF - Botanics Impact factor: 2.684, year: 2009

  1. Shedding Light on the Sea: André Morel's Legacy to Optical Oceanography

    Science.gov (United States)

    Antoine, David; Babin, Marcel; Berthon, Jean-François; Bricaud, Annick; Gentili, Bernard; Loisel, Hubert; Maritorena, Stéphane; Stramski, Dariusz

    2014-01-01

    André Morel (1933-2012) was a prominent pioneer of modern optical oceanography, enabling significant advances in this field. Through his forward thinking and research over more than 40 years, he made key contributions that this field needed to grow and to reach its current status. This article first summarizes his career and then successively covers different aspects of optical oceanography where he made significant contributions, from fundamental work on optical properties of water and particles to global oceanographic applications using satellite ocean color observations. At the end, we share our views on André's legacy to our research field and scientific community.

  2. Pedagogic Juan Andrés Cué Bada's work (1935-1979

    Directory of Open Access Journals (Sweden)

    Janet Reinaldo-Delgado

    2017-06-01

    Full Text Available Juan Andrés Cué Bada was born on November 30, 1908 in the province of Las Tunas. He had an active political participation against Machado and Batista, while he dedicated himself to private education. After the triumph of the Cuban Revolution in 1959 he moved to Santiago de Cuba and in 1962 began his professorial course at the Universidad de Oriente until he died in 1979. Because of the lack of knowledge about his figure and his work as a teacher, this article Intends to explain the pedagogical work of Juan Andrés Cué Bada between the years 1935 and 1979.

  3. Ocean anoxia did not cause the Latest Permian Extinction

    Science.gov (United States)

    Proemse, Bernadette C.; Grasby, Stephen E.; Wieser, Michael E.; Mayer, Bernhard; Beauchamp, Benoit

    2014-05-01

    The Latest Permian Extinction (LPE, ~252 million years ago) was a turning point in the history of life on Earth with a loss of ~96% of all marine species and ~70% of all terrestrial species. While, the event undoubtedly shaped the evolution of life its cause remains enigmatic. A leading hypothesis is that the global oceans became depleted in oxygen (anoxia). In order to test this hypothesis we investigated a proxy for marine oxygen levels (molybdenum isotopic composition) in shale across the LPE horizon located on the subtropical northwest margin of Pangea at that time. We studied two sedimentary records in the Sverdrup basin, Canadian High Arctic: Buchanan Lake (eastern Axel Heiberg Island; 79° 26.1'N, 87° 12.6'W), representing a distal deep-water slope environment, and West Blind Fiord (southwest Ellesmere Island; 78° 23.9'N, 85° 57.2'W), representing a deep outer shelf environment (below storm wave base). The molybdenum isotopic composition (δ98/95Mo) of sediments has recently become a powerful tool as a paleo-oceanographic proxy of marine oxygen levels. Sample preparation was carried out in a metal-free clean room facility in the isotope laboratory of the Department of Physics and Astronomy, University of Calgary, Canada, that is supplied by HEPA-filtered air. Molybdenum isotope ratios were determined on a Thermo Scientific multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) with an uncertainty better than ±0.10o for δ98/95Mo values. Results from the Buchanan Lake section show a large shift in δ98/95Mo values from 2.02o to +2.23o at the extinction horizon, consistent with onset of euxinic conditions. In contrast, West Blind Fiord shales, representing the sub-storm wave base shelf environment, show little change in the molybdenum isotopic composition (1.34o to +0.05), indicating ongoing oxic conditions across the LPE (Proemse et al., 2013). Our results suggest that areas of the Pangea continental shelf (North West Pangea) experienced

  4. Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea.

    Science.gov (United States)

    Sidor, Christian A; O'Keefe, F Robin; Damiani, Ross; Steyer, J Sébastien; Smith, Roger M H; Larsson, Hans C E; Sereno, Paul C; Ide, Oumarou; Maga, Abdoulaye

    2005-04-14

    New fossils from the Upper Permian Moradi Formation of northern Niger provide an insight into the faunas that inhabited low-latitude, xeric environments near the end of the Palaeozoic era (approximately 251 million years ago). We describe here two new temnospondyl amphibians, the cochleosaurid Nigerpeton ricqlesi gen. et sp. nov. and the stem edopoid Saharastega moradiensis gen. et sp. nov., as relicts of Carboniferous lineages that diverged 40-90 million years earlier. Coupled with a scarcity of therapsids, the new finds suggest that faunas from the poorly sampled xeric belt that straddled the Equator during the Permian period differed markedly from well-sampled faunas that dominated tropical-to-temperate zones to the north and south. Our results show that long-standing theories of Late Permian faunal homogeneity are probably oversimplified as the result of uneven latitudinal sampling.

  5. Archaeolithoporella and Tubiphytes : Affinties and Paleoecology in Permian Reefs of South China

    Institute of Scientific and Technical Information of China (English)

    王生海; 范嘉松; J.Keith Rigby

    1994-01-01

    Archaeolithoporella is one of the most important Permian reef-building organisms, but itsaffinity has long been controversial. It was first reported in Japan and was considered as a coralline red alga. Since then it has been recognized in Permian reefs in other parts of the world. Many researchers have studied the materials they had found and the Japanese holotype specimen. Most have concluded that it is a problematic alga. or just a problematica because of weak criteria for definition. Some have even considered it inorganic. However, relict cellular structures and microtubular laminae found in well-preserved specimens from Permian reefs in South China strongly support a coralline red algal affinity for the genus.In situ preserved Archaeolithoporella is restricted within the typical framework facies and it occurs most abundantly in syndepositionally cemented framestones. This suggests that Archaeolithoporella required a firm substrate and clear but agitated sea water. Archaeolithoporella is often found

  6. Trouble Upstairs: Reconstructing Permian-Triassic Climate during Siberian Traps Magmatism

    Science.gov (United States)

    Black, B. A.; Neely, R. R., III; Lamarque, J. F.; Elkins-Tanton, L. T.; Mills, M. J.

    2014-12-01

    The eruption of large igneous provinces can transfer significant masses of volatiles from Earth's interior to the atmosphere. What are the consequences of this degassing for habitability and extinction? In this presentation, we consider this question in the context of Siberian Traps magmatism, which has been shown to overlap within geochronologic uncertainty with catastrophic deterioration of Permian-Triassic marine and terrestrial ecosystems. To investigate the impacts of endogenic gases on climate, atmospheric chemistry, and ocean circulation, we conducted a series of numerical experiments with a comprehensive global model for the Permian-Triassic. Our simulations predict the intensity and distribution of acid rain and ozone depletion, with implications for terrestrial biota. We further explore feedbacks between sulfur emissions, transient cooling, and shifts in ocean circulation. We suggest that Siberian Traps magmatism may have triggered several distinct kill mechanisms in the oceans and on land, contributing to a complex combined pattern of environmental stress and latest Permian ecological failure.

  7. Origin of the Permian-Triassic komatiites, northwestern Vietnam

    Science.gov (United States)

    Hanski, Eero; Walker, Richard J.; Huhma, Hannu; Polyakov, Gleb V.; Balykin, Pavel A.; Tran Trong Hoa; Ngo Thi Phuong

    Rare examples of Phanerozoic komatiites are found in the Song Da zone, NW Vietnam. These komatiites were erupted through continental crust and may belong to the SE extension of the Permo-Triassic Emeishan volcanic province located in SW China. They provide a good opportunity to study the source characteristics of starting plume magmas in a continental flood basalt province. Erupted on late-Permian carbonate rocks, the komatiitic rocks are interbedded with low-Ti olivine basalts. Basaltic komatiites display pyroxene spinifex textures, while more magnesian rocks (MgO up to 32 wt.%) are porphyritic, containing a single, cognate population of euhedral to elongated olivine phenocrysts with Fo up to 93.0%. This suggests a highly magnesian parental magma with 22-23 wt.% MgO. In terms of major and minor elements, the komatiites are similar to the ca. 89 Ma old Gorgona Island komatiites of Colombia. The Song Da komatiites are also strongly light-rare-earth-element- (LREE) depleted (CeN/YbN 0.30-0.62) and have unfractionated heavy rare earth element (HREE) patterns. The komatiites have high Os concentrations (up to 7.0 ppb), low but variable Re/Os ratios, and define an isochron with an age of 270+/-21 Ma, and an initial 188Os/187Os ratio of 0.12506+/- 0.00041 (γOs=+0.02+/-0.40). The Os isotopic systematics of the komatiites show no effects of crustal contamination. In contrast, their initial ɛNd values range from +3 to +8, reflecting varying but generally small degrees of contamination with Proterozoic sialic basement material. Associated low-Ti basalts have low initial ɛNd values (-0.8 to -7.5), high initial γOs values (>=15), flat or LREE-enriched REE patterns, and Nb-Ta depletion. These characteristics are also attributed to variable extents of crustal contamination.

  8. Sedimentary features and exploration targets of Middle Permian reservoirs in the SW Sichuan Basin

    Directory of Open Access Journals (Sweden)

    Guoming Xu

    2015-11-01

    Full Text Available The exploration direction and targets for the large-scale Middle Permian gas reservoirs in the Sichuan Basin are hot spots and challenges in current exploration researches. The exploration successes of large gas field of Cambrian Longwangmiao Formation in Gaoshiti-Moxi region, Central Sichuan Basin, indicated that prospective sedimentary facies belt was the basis for the formation of large gas fields. In this paper, based on seismic data, outcrop data and drilling data, the tectonic framework and sedimentary features of the Middle Permian in the SW Sichuan Basin were comprehensively studied. The following conclusions were reached from the perspective of sedimentary facies control: (1 during the Middle Permian, this region was in shallow water gentle slope belts with high energy, where thick reef flat facies were deposited; (2 the basement was uplifted during Middle Permian, resulting in the unconformity weathering crust at the top of Maokou Formation due to erosion; the SW Sichuan Basin was located in the karst slope belt, where epigenic karstification was intense; and (3 reef flat deposits superimposed by karst weathering crust was favorable for the formation of large-scale reef flat karst reservoirs. Based on the combination of the resources conditions and hydrocarbon accumulation conditions in this region, it was pointed out that the Middle Permian has great potential of large-scale reef flat karst gas reservoir due to its advantageous geological conditions; the Middle Permian traps with good hydrocarbon accumulation conditions were developed in the Longmen Mountain front closed structural belt in the SW Sichuan Basin and Western Sichuan Basin depression slope belt, which are favorable targets for large-scale reef flat karst reservoirs.

  9. Upper Permian ostracode assemblage from the Jadar Block (Vardar zone, NW Serbia

    Directory of Open Access Journals (Sweden)

    Crasquin Sylvie

    2010-01-01

    Full Text Available Ostracodes from the Changhsingian (latest Permian age in the uppermost part of the “Bituminous Limestone” Formation of the Komirić Section in NW Serbia (Jadar Block, Vardar Zone are described and illustrated. Three new species of ostracodes are introduced: Basslerella jadarensis n. sp., Acratia serbianella n. sp., and Knoxiella vardarensis n. sp. The ostracode assemblage, together with conodonts and foraminifers, is the first record of the youngest Late Permian age microfaunas from Serbia and from the central part of the Balkan Peninsula.

  10. Taboo Icons: The Bodily Photography of Andres Serrano

    Directory of Open Access Journals (Sweden)

    Tyler Shine

    2015-08-01

    Full Text Available   Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:Verdana;} Andres Serrano’s photography is often dismissed as being shocking for the sake of being shocking. His infamous photograph Piss Christ (1987 is the oft-cited example at the center of the National Endowment for the Arts controversies during the Culture Wars of the 1980s and 1990s. I return to Piss Christ as a way to expand the interpretative scope of Serrano’s early photographs, which I call “taboo icons” because of their ambiguity and ability to crisscross symbolic boundaries in the unstable space between sacred and profane, thus making his images both powerful and potentially dangerous. Building upon previous scholarship that draws connections between modern and early modern aesthetic practices, I look to the material practices of Christianity in medieval Europe characterized by a sophisticated visual culture that mixed both the physical and the spiritual. The intensifying rejection and reverence of matter resulted in divergent responses, yet the contradictory nature of matter remained central to the ideological beliefs of Christianity where the doctrines of Creation, Incarnation, and Resurrection are at its core. Serrano’s visceral photographs are emphatically material and can productively be read vis-à-vis medieval visual culture. In doing so, this reading changes the narrow perception of Serrano’s early photographs and provides an alternative understanding of his artistic project that reinserts religion into contemporary American art discourse.

  11. Agency in the Reconstruction of Language Identity: A Narrative Case Study from the Island of San Andrés

    Science.gov (United States)

    Arias, Carlos Augusto

    2014-01-01

    The adoption of the English language paradigm and the subsequent implementation of bilingual policies worldwide are generating new linguistic hierarchies. These have an effect on the linguistic diversity at the sub-national level and on individuals' linguistic human rights. This article reports the results of a case study on an individual's…

  12. An Integrated Study of the Grayburg/San Andres Reservoir, Foster and South Cowden Fields, Ector County, Texas, Class II

    Energy Technology Data Exchange (ETDEWEB)

    Trentham, Robert C.; Weinbrandt, Richard; Robinson, William C.; Widner, Kevin

    2001-05-03

    The objectives of the project were to: (1) Thoroughly understand the 60-year history of the field. (2) Develop a reservoir description using geology and 3D seismic. (3) Isolate the upper Grayburg in wells producing from multiple intervals to stop cross flow. (4) Re-align and optimize the upper Grayburg waterflood. (5) Determine well condition, identify re-frac candidates, evaluate the effectiveness of well work and obtain bottom hole pressure data for simulation utilizing pressure transient testing field wide. (6) Quantitatively integrate all the data to guide the field operations, including identification of new well locations utilizing reservoir simulation.

  13. Development and recent activity of the San Andrés landslide on El Hierro, Canary Islands, Spain

    Czech Academy of Sciences Publication Activity Database

    Klimeš, Jan; Yepes, J.; Becerril, L.; Kusák, Michal; Galindo, I.; Blahůt, Jan

    2016-01-01

    Roč. 261, MAY 15 (2016), s. 119-131 ISSN 0169-555X R&D Projects: GA MŠk LM2010008 Grant - others: National Geographic Society W244-12 Institutional support: RVO:67985891 Keywords : Deep-seated gravitational slope deformations (DSGSDs) * Landslide monitoring * Creep movements * Canary Islands Subject RIV: DE - Earth Magnetism, Geodesy, Geography Impact factor: 2.958, year: 2016

  14. SANS studies of polymers

    International Nuclear Information System (INIS)

    Wignall, G.D.

    1984-10-01

    Before small-angle neutron scattering (SANS), chain conformation studies were limited to light and small angle x-ray scattering techniques, usually in dilute solution. SANS from blends of normal and labeled molecules could give direct information on chain conformation in bulk polymers. Water-soluble polymers may be examined in H 2 O/D 2 O mixtures using contrast variation methods to provide further information on polymer structure. This paper reviews some of the information provided by this technique using examples of experiments performed at the National Center for Small-Angle Scattering Research (NCSASR)

  15. André François Boshoff (1945-2016)

    African Journals Online (AJOL)

    Campbell Murn

    National Herbarium in Pretoria and at Stellenbosch. In 1974 André was awarded a. BSc (honours) postgraduate degree in Wildlife Management at the. University of Pretoria (Eugène. Marais. Chair of. Wildlife. Management). It was during this period that he developed a greater interest in birds, especially in their conservation ...

  16. Tõnu Anton kahtlustab linnaisasid omakasu jahtimises / Tõnu Anton, Andres Kõiv, Ando Hagel ; interv. Ulis Guth

    Index Scriptorium Estoniae

    Anton, Tõnu, 1942-

    2004-01-01

    Võru linnavolikogu opositsiooni kuuluv keskerakondlane Tõnu Anton kritiseerib sotsiaalabitalituse ruumide remondirahade kasutamist ja kahtlustab linnavalitsust riigihangete käigus raha kõrvaldamises. Linnapea Ando Hagel ja abilinnapea Andres Kõiv lükkavad süüdistused tagasi

  17. Andres Ehin tähistas sünnipäeva raamatuesitlusega / Maire Kõrver

    Index Scriptorium Estoniae

    Kõrver, Maire, 1961-

    2006-01-01

    Andres Ehin esitles oma luulekogu "Põdrapõrnikapääsukene" ja selle ingliskeelset tõlget "Moose Beetle Swallow" oma sünnipäeval Iiri suursaadiku residentsis, kus oli kohal ka luulekogu tõlkija, Iiri luuletaja Patrick Cotter

  18. SUTD-i koorik = SUTD Gridshell / Andres Sevtšuk, Raul Kalvo

    Index Scriptorium Estoniae

    Sevtšuk, Andres, 1981-

    2013-01-01

    Singapuri Tehnoloogia ja Disaini Ülikooli (SUTD) raamatukogu paviljon. Eskiis valmis esimese aasta üliõpilastele korraldatud töötoas. Algse ideega töötas edasi City Form Lab (arhitektid Andres Sevtšuk, Raul Kalvo). Paviljon pandi kokku ligi saja üliõpilase osalusel. Valmis: mai 2013

  19. "Riigikogu hoone 90" = "Estonian parliament building 90" / Janno Roos, Andres Labi

    Index Scriptorium Estoniae

    Roos, Janno, 1976-

    2013-01-01

    Eesti Sisearhitektide Liidu 2012. aasta näituse kujunduse preemia pälvinud näitusest (Lossiplats 1A). Kujunduse autorid Janno Roos ja Andres Labi (Ruumilabor). Kuraator Mait Väljas. Graafiline disain: Identity. Sisearhitekti ja ESLi aastapreemiate žürii liikme Mari Kurismaa ning arhitektuuriajaloolase Leele Välja arvamused

  20. Abjeção em textos de André Sant’Anna

    Directory of Open Access Journals (Sweden)

    Leandro Salgueirinho

    2009-07-01

    Full Text Available Trata-se de uma leitura de textos do escritor André Sant’Anna a partir da problematização que, em The Return of the Real (1986, o crítico de arte norte-americano Hal Foster faz da noção de abjeto e da dita abject art.

  1. Andres Herkel : Venemaa esindaja ENPA presidendiks ei sobi / Haldi Ellam, Ravil Khair Al-Din

    Index Scriptorium Estoniae

    Ellam, Haldi

    2007-01-01

    Vene ajalehe Kommersant väitel on Eesti parlamendi süüdistused ENPA presidendi Rene van der Lindeni vastu seotud Mihhail Margelovi võimaliku valimisega uueks presidendiks. Kristiina Ojuland ja Andres Herkel lükkavad väite tagasi

  2. Maramaa elust poksi ja graffitini / Andres Lepik, Ott Aardam ; interv. Gert Kiiler

    Index Scriptorium Estoniae

    Lepik, Andres

    2008-01-01

    Ugala teater alustas 89. hooaega. Esimese poole plaanitud esietendused : Toomas Suumani "Linnapea" Heiki Raudla raamatu "August Maramaa aeg" järgi, lavastaja Andres Lepik. Ott Aardami noortetükist "Poks", lavastaja autor. Gerald Sibleyras' "Grafiti", lavastaja Taago Tubin. Silvia Soro jõulunäidend "Inetu pardipoja" ainetel, lavastaja Oleg Titov

  3. Who Is DeAndre? Tapping the Power of Popular Culture in Literacy Learning

    Science.gov (United States)

    Gainer, Jesse

    2008-01-01

    Gainer talks about the importance of connecting students' background knowledge, experiences, and interests to curricular goals. He highlights the voice of DeAndre, an eighth-grade boy in special education classes, whose participation in an after-school club led to the creation of a video. According to Gainer, "[W]hen given the opportunity to…

  4. [Rets. rmt. : Glucksmann, Andre. Ouest contre Ouest. Pariis, 2003] / Malle Talvet

    Index Scriptorium Estoniae

    Talvet, Malle

    2004-01-01

    Prantsuse filosoofi Andre Glucksmanni raamat "Ouest contre Ouest" ehk "Lääs Lääne vastu" käsitleb rahvusvahelisi sündmusi 2002/2003, eelkõige Iraaki, terrorismi, Ameerika Ühendriike ja Prantsusmaad

  5. El naturalista Alejando de Humboldt, Cavanilles y Juan Andrés

    Directory of Open Access Journals (Sweden)

    María-Rosario MARTÍ MARCO

    2009-11-01

    Full Text Available RESUMEN: Tras una breve introducción en la que se traza un paralelismo entre el erudito Juan Andrés y el naturalista Alejandro de Humboldt, se presenta una síntesis de la relevancia del viaje científico de Humboldt iniciado en España. Las referencias sobre la figura y trabajo de Humboldt y, en menor medida, sobre Cavanilles en la gran obra total de Andrés demuestran el vigor intelectual de éste, quien subraya muchos de los elementos fundamentales del legado humboldtiano.ABSTRACT: This paper begins with a brief introduction to the similarities between the scholar Juan Andrés and the naturalist Alexander von Humboldt and continues with a summary of the relevance of Humboldt’s scientific expedition which began in Spain. The references to Humboldt’s persona and endeavours, and to a lesser extent to Cavanilles, in all of Andrés’ great works demonstrate the intellectual ability of the author who pinpoints many of the fundamental aspects of Humboldt’s legacy.

  6. Exploration, Invention and Imagination: The Myth of Icarus in André Bazin

    NARCIS (Netherlands)

    Joret, B.; Viegas, S.; Teixeira, M.T.

    2015-01-01

    In this essay, I intend to elucidate the ontological implications of André Bazin’s integral realism: "a recreation of the world in its own image." The connection that he draws between the world and the image is in harmony with his mythical project for cinema, which argues that an imaginative myth

  7. Giving Voice: Narrating silence, history and memory in André Brink ...

    African Journals Online (AJOL)

    This essay examines André Brink's two most recent novels, The Other Side of Silence (2002) and Before I Forget (2004), in terms of their voicing of silence and the rewriting of history and memory. Each has a theme familiar to Brink's readers – an historical story of colonial violence and violation avenged; and the recounting ...

  8. Baltoscandal on lõppenud, uued mõtted on saadud / Andres Keil

    Index Scriptorium Estoniae

    Keil, Andres, 1974-

    2006-01-01

    Eesti teater oli Baltoscandalil koondatud olematu teatri mõiste alla. Andres Noormetsa "Reunioon", Mart Kangro ja Ansambel U "Mäng", Marco Laimre "Vangistus", Asko Künnapi "Säälpool jõge", Anders Härmi "Cooking and Shitting", Sven Kuntu "Miks Eesti mehed ei tantsi?", Linnar Priimäe "Inimese lõhn"

  9. Perekonnad hoiavad kontrolli tuntud suurfirmade tegevuse üle / Andres Reimer

    Index Scriptorium Estoniae

    Reimer, Andres

    2005-01-01

    Andres Haamer räägib oma perefirma Overall Eesti loomisest. Uniprindi-Unipressi omanikud Sirje ja Andrus Reinsoo hindavad koos oma äri peatrumpideks täielikku usaldust ja teineteisemõistmist. Lisad: Maailma legend: Rockefellerid; Eesti legend: Puhkid

  10. Carnivorous dinocephalian from the Middle Permian of Brazil and tetrapod dispersal in Pangaea.

    Science.gov (United States)

    Cisneros, Juan Carlos; Abdala, Fernando; Atayman-Güven, Saniye; Rubidge, Bruce S; Şengörc, A M Celâl; Schultz, Cesar L

    2012-01-31

    The medial Permian (~270-260 Ma: Guadalupian) was a time of important tetrapod faunal changes, in particular reflecting a turnover from pelycosaurian- to therapsid-grade synapsids. Until now, most knowledge on tetrapod distribution during the medial Permian has come from fossils found in the South African Karoo and the Russian Platform, whereas other areas of Pangaea are still poorly known. We present evidence for the presence of a terrestrial carnivorous vertebrate from the Middle Permian of South America based on a complete skull. Pampaphoneus biccai gen. et sp. nov. was a dinocephalian "mammal-like reptile" member of the Anteosauridae, an early therapsid predator clade known only from the Middle Permian of Russia, Kazakhstan, China, and South Africa. The genus is characterized, among other features, by postorbital bosses, short, bulbous postcanines, and strongly recurved canines. Phylogenetic analysis indicates that the Brazilian dinocephalian occupies a middle position within the Anteosauridae, reinforcing the model of a global distribution for therapsids as early as the Guadalupian. The close phylogenetic relationship of the Brazilian species to dinocephalians from South Africa and the Russian Platform suggests a closer faunistic relationship between South America and eastern Europe than previously thought, lending support to a Pangaea B-type continental reconstruction.

  11. The continental Permian-Triassic boundary in the Netherlands: Implications for the geomagnetic polarity time scale

    NARCIS (Netherlands)

    Szurlies, M.; Geluk, M.C.; Krijgsman, W.; Kürschner, W.M.

    2012-01-01

    In Central and NW Europe, the transition from the Permian to the Triassic (i.e., the Zechstein–Buntsandstein boundary interval) is developed mainly in red bed facies. This continental sedimentary succession is marked by relatively high sedimentation rates providing a high temporal resolution

  12. The main fish communities of the limnic Permian and Carboniferous basins of the Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Zajíc, Jaroslav

    33-34, - (2006), s. 99-101. ISBN 80-210-4097-1. ISSN 1211-281X. [Paleontological Conference /7./. Brno, 19.10.2006-20.10.2006] Institutional research plan: CEZ:AV0Z30130516 Keywords : ichthyofaunae * Upper Carboniferous * Lower Permian Subject RIV: EG - Zoology

  13. Biogenic silica microfossils in sediments of the Permian - Carboniferous Unayzah Formation, Saudi Arabia

    NARCIS (Netherlands)

    Garming, J.F.L.; Franks, S.G.; Cremer, H.; Abbink, O.A.

    2010-01-01

    Biogenic silica particles (BSPs) have been discovered in sediments of the Permian - Carboniferous Unayzah Formation of Saudi Arabia. The BSPs are extracted from sediments that are generally barren of macro- or microfossils. BSPs have been found in the Basal Khuff Clastics (BKC), and the Unayzah A,

  14. A Record of Rotaloid Foraminifera from the Upper Permian-Lower ...

    African Journals Online (AJOL)

    PRABHAS PANDE

    INTRODUCTION. In the history of organic evolution, the end of Palaeozoic Era was marked by the conspicuous event of mass extinctions. Amongst foraminifera, as many as fourteen families became extinct. (Loeblich and Tappan, 1964) during the Permian Period and many new families evolved in the. Mesozoic. There is a ...

  15. Permian fauna of the Krkonoše Piedmont Basin (Bohemian Massif, Central Europe)

    Czech Academy of Sciences Publication Activity Database

    Zajíc, Jaroslav

    2014-01-01

    Roč. 70, 3/4 (2014), s. 131-142 ISSN 0036-5343 Institutional support: RVO:67985831 Keywords : faunal lists * palaeogeography * palaeoenvironment * stratigraphy * Early Permian * Krkonoše Piedmont Basin * Bohemian Massif Subject RIV: DB - Geology ; Mineralogy

  16. A tale of two extinctions : converging end-Permian and end-Triassic scenarios

    NARCIS (Netherlands)

    van de Schootbrugge, Bas; Wignall, Paul B.

    The end-Permian (c. 252 Ma) and end-Triassic (c. 201 Ma) mass-extinction events are commonly linked to the emplacement of the large igneous provinces of the Siberia Traps and Central Atlantic Magmatic Province, respectively. Accordingly, scenarios for both extinctions are increasingly convergent and

  17. Anatomy of a Permian Erg sequence: the De La Cuesta Formation (northwestern Argentina)

    International Nuclear Information System (INIS)

    Spalletti, L.; Limarino, C.; Colombo, F.

    2010-01-01

    This work is about the Permian red beds of the La Cuesta Formation (Sierra de Narvaez, northwestern Argentina) which is composed of sandstones associated with mud stones and subordinate conglomerates. The sediments obtained from the interaction between aeolian and ephemeral fluvial systems, are represented by aeolian dune, dry aeolian inter dune and aeolian sand sheet, mud flat, wet aeolian inter dune, and fluvial deposits

  18. Lower permian reef-bank bodies’ characterization in the pre-caspian basin

    Science.gov (United States)

    Wang, Zhen; Wang, Yankun; Yin, Jiquan; Luo, Man; Liang, Shuang

    2018-02-01

    Reef-bank reservoir is one of the targets for exploration of marine carbonate rocks in the Pre-Caspian Basin. Within this basin, the reef-bank bodies were primarily developed in the subsalt Devonian-Lower Permian formations, and are dominated by carbonate platform interior and margin reef-banks. The Lower Permian reef-bank present in the eastern part of the basin is considered prospective. This article provides a sequence and sedimentary facies study utilizing drilling and other data, as well as an analysis and identification of the Lower Permian reef-bank features along the eastern margin of the Pre-Caspian Basin using sub-volume coherence and seismic inversion techniques. The results indicate that the sub-volume coherence technique gives a better reflection of lateral distribution of reefs, and the seismic inversion impedance enables the identification of reef bodies’ development phases in the vertical direction, since AI (impedance) is petrophysically considered a tool for distinguishing the reef limestone and the clastic rocks within the formation (limestone exhibits a relatively high impedance than clastic rock). With this method, the existence of multiple phases of the Lower Permian reef-bank bodies along the eastern margin of the Pre-Caspian Basin has been confirmed. These reef-bank bodies are considered good subsalt exploration targets due to their lateral connectivity from south to north, large distribution range and large scale.

  19. Marine anoxia and delayed Earth system recovery after the end-Permian extinction.

    Science.gov (United States)

    Lau, Kimberly V; Maher, Kate; Altiner, Demir; Kelley, Brian M; Kump, Lee R; Lehrmann, Daniel J; Silva-Tamayo, Juan Carlos; Weaver, Karrie L; Yu, Meiyi; Payne, Jonathan L

    2016-03-01

    Delayed Earth system recovery following the end-Permian mass extinction is often attributed to severe ocean anoxia. However, the extent and duration of Early Triassic anoxia remains poorly constrained. Here we use paired records of uranium concentrations ([U]) and (238)U/(235)U isotopic compositions (δ(238)U) of Upper Permian-Upper Triassic marine limestones from China and Turkey to quantify variations in global seafloor redox conditions. We observe abrupt decreases in [U] and δ(238)U across the end-Permian extinction horizon, from ∼3 ppm and -0.15‰ to ∼0.3 ppm and -0.77‰, followed by a gradual return to preextinction values over the subsequent 5 million years. These trends imply a factor of 100 increase in the extent of seafloor anoxia and suggest the presence of a shallow oxygen minimum zone (OMZ) that inhibited the recovery of benthic animal diversity and marine ecosystem function. We hypothesize that in the Early Triassic oceans-characterized by prolonged shallow anoxia that may have impinged onto continental shelves-global biogeochemical cycles and marine ecosystem structure became more sensitive to variation in the position of the OMZ. Under this hypothesis, the Middle Triassic decline in bottom water anoxia, stabilization of biogeochemical cycles, and diversification of marine animals together reflect the development of a deeper and less extensive OMZ, which regulated Earth system recovery following the end-Permian catastrophe.

  20. Phosphatic Permian rocks of the Adobe Range, Nevada, and their environment of deposition

    Science.gov (United States)

    Ketner, Keith Brindley

    1979-01-01

    Permian sedimentary rocks in the Adobe range, northern Nevada, are phosphatic, and although the particles of phosphate are relatively more disseminated, they closely resemble the rocks of the Phosphoria Formation. In the northern Adobe Range, where the entire Permian sequence is approximately correlative with the Phosphoria Formation, it is 200 m thick and averages 1.7 percent P2O5 . In the southern Adobe Range, the Permian sequence is more than 1,700 m thick, and the upper half which is roughly correlative with the Phosphoria Formation averages more than 2 percent P2O5. Some thin beds in rocks of Permian age contain more than 20 percent P2O5. Phosphatic rocks of the Adobe Range were deposited in shallow water among islands in the western part of the epicontinental Phosphoria sea. The continental margin and the open ocean lay far to the west. At the same time, the Phosphoria Formation was being deposited in the eastern and central parts of the Phosphoria sea. Theories based on the work of Kasakov done in 1937 relating phosphate deposition directly to sites of upwelling oceanic waters are questioned. Nondeposition of diluent materials such as detritus and carbonate is probably of more importance in producing phosphate in economic concentrations than is geographic position with respect to upwelling waters.

  1. The fungal and acritarch events as time markers for the latest Permian mass extinction: An update

    Directory of Open Access Journals (Sweden)

    Michael R. Rampino

    2018-01-01

    Full Text Available The latest Permian extinction (252 Myr ago was the most severe in the geologic record. On land, widespread Late Permian gymnosperm/seed-fern dominated forests appear to have suffered rapid and almost complete destruction, as evidenced by increased soil erosion and changes in fluvial style in deforested areas, signs of wildfires, replacement of trees by lower plants, and almost complete loss of peat-forming and fire-susceptible vegetation. Permian–Triassic boundary strata at many sites show two widespread palynological events in the wake of the forest destruction: The fungal event, evidenced by a thin zone with >95% fungal cells (Reduviasporonites and woody debris, found in terrestrial and marine sediments, and the acritarch event, marked by the sudden flood of unusual phytoplankton in the marine realm. These two events represent the global temporary explosive spread of stress-tolerant and opportunistic organisms on land and in the sea just after the latest Permian disaster. They represent unique events, and thus they can provide a time marker in correlating latest Permian marine and terrestrial sequences.

  2. Remembering San Diego

    International Nuclear Information System (INIS)

    Chuyanov, V.

    1999-01-01

    After 6 years of existence the ITER EDA project in San Diego, USA, was terminated by desition of the US Congress. This article describes how nice it was for everybody as long as it lasted and how sad it is now

  3. The Saint Martin de Belleville syncline and its uraniferous permian sandstone

    International Nuclear Information System (INIS)

    Schade, Johannes

    1983-01-01

    This dissertation (these de specialite) is a study of the geology of the St.Martin d.B. syncline and the uranium prospect 'le Cochet' in the Carboniferous Brianconnais Zone of Savoy. Stratigraphy and sedimentology: This syncline presents continental detrital sediments ranging from U.Carboniferous to L.Triassic. In the U.Carboniferous, magmatic activity begins with the Moriaz Layers acid volcanics that are considered as a lateral equivalent of the Stephanian Courchevel Conglomerates. In Permian times, parts of an alluvial fan seem to occupy the north of the study area (gray and green conglomeratic sandstone). Southwards these inter-finger with flood plain sediments (red slate) including a locally oolitic limestone. Volcanic detritus is important in the Permian. Tourmalinite pebbles are frequent and seem to be related to the regional Permian magmatism. Albitization of feldspars is general in the Carboniferous and the Permian. The Permo-triassic typically shows microcline bearing dolomitic sandstones. In the Scythian quartzites orthoclase is the dominant feldspar. The quartzites are overlain by L.Triassic evaporites identified by the sulfur isotope ratio of their gypsum. The morphology of the zircons in the sandstones has been investigated using the typological method of J.P. Pupin. Regional Permian magmatism apparently produces volcanics of the calc-alkalic and tholeiitic series as well as a high level granitic intrusion of anatectic origin. The uranium occurrences are strata-bound on a kilometric and hecto-metric scale. They are developed almost exclusively in the gray variety of the Permian sandstones whose gray and red varieties are always barren. Within this unit, the mineralization impregnates irregularly distributed lenses and pods of coal material. Uranium is accompanied by vanadium occurring as roscoelite. The association U-V, of bio-philic character, reflects the concentration in the sedimentary environment and argues for a quite indirect relation with the

  4. Permian-Triassic palynofacies and chemostratigraphy in a core recovered from central Spitsbergen.

    Science.gov (United States)

    van Soelen, Els; Hasic, Edi; Planke, Sverre; Svensen, Henrik; Sleveland, Arve; Midtkandal, Ivar; Twitchett, Richard; Kürschner, Wolfram

    2017-04-01

    The Late Permian biotic crisis is one of the most severe extinction events in the history of the Earth, affecting both terrestrial and marine environments. A large igneous province (LIP) in Siberia is thought to be linked with this global event; however, correlation between the volcanic event and the biotic crisis is difficult and requires well dated and high resolution Permian-Triassic boundary successions from the Arctic region. The Svalbard end-Permian drilling project is aimed at improved correlation of the Permian-Triassic sections in Svalbard with the Siberian Traps. The core was collected from Deltadalen, in central Spitsbergen, with additional samples collected from an outcrop close to the drilling site. As part of this collaborative project, carbon isotope geochemistry, palynofacies and palynomorphs were studied in order to learn more about the biostratigraphy and to understand changes in the source(s) of organic matter. Objectives were to reconstruct the paleo-environment; to correlate the core with other sites on Svalbard, and with global records; and to identify and characterize the Late Permian extinction event in the core. A carbon isotope shift is an important global stratigraphic marker in the latest Permian and occurs near the base of the Vikinghøgda Formation in the Deltadalen core, where bulk rock values change from -24.5 to -32.7‰. Palynomorph preservation was generally poor in both core and outcrop samples which prevented detailed examination of species and limited their usefulness for biostratigraphy. Still, palynofacies were useful for correlative purposes. AOM (amorphous organic matter) in the core increases at the lithological change from sandstones to siltstones, and is indicative of anoxic conditions. Similar high levels of AOM in the outcrop samples can be correlated with the core. Palynological analyses show that the spore/pollen ratio starts to increase before the negative shift in the isotope curve. Such an increase in spore

  5. Montage, Militancy, Metaphysics: Chris Marker and André Bazin

    Directory of Open Access Journals (Sweden)

    Sarah Cooper

    2010-01-01

    Full Text Available

     

    Abstract (E: This article focuses on the relationship between the work of André Bazin and Chris Marker from the late 1940s through to the late 1950s and beyond. The division between Bazin's ŘRight Bankř affiliation with Les Cahiers du Cinéma on the one hand, and Markerřs ŘLeft Bankř allegiances on the other, is called into question here as my argument seeks to muddy the waters of their conventional ideological separation across the river Seine. Working alliteratively through Markerřs well-known talent for deft montage along with his militancy, I consider Bazinřs praise for Markerřs editing technique Ŕ in spite of famously expressing a preference elsewhere for the long take, and deep focus cinematography Ŕ and I address their political differences and convergences. Yet I also explore the rather more unexpected question of metaphysics in order to further emphasize a closer relationship between these two figures. I chart the emergence of an enduring spiritual bond between critic and filmmaker that surfaces first in Markerřs writings for the left-wing Catholic journal L’EspritMicrobialites and global environmental change across the Permian-Triassic boundary: a synthesis.

    Science.gov (United States)

    Kershaw, S; Crasquin, S; Li, Y; Collin, P-Y; Forel, M-B; Mu, X; Baud, A; Wang, Y; Xie, S; Maurer, F; Guo, L

    2012-01-01

    Permian-Triassic boundary microbialites (PTBMs) are thin (0.05-15 m) carbonates formed after the end-Permian mass extinction. They comprise Renalcis-group calcimicrobes, microbially mediated micrite, presumed inorganic micrite, calcite cement (some may be microbially influenced) and shelly faunas. PTBMs are abundant in low-latitude shallow-marine carbonate shelves in central Tethyan continents but are rare in higher latitudes, likely inhibited by clastic supply on Pangaea margins. PTBMs occupied broadly similar environments to Late Permian reefs in Tethys, but extended into deeper waters. Late Permian reefs are also rich in microbes (and cements), so post-extinction seawater carbonate saturation was likely similar to the Late Permian. However, PTBMs lack widespread abundant inorganic carbonate cement fans, so a previous interpretation that anoxic bicarbonate-rich water upwelled to rapidly increase carbonate saturation of shallow seawater, post-extinction, is problematic. Preliminary pyrite framboid evidence shows anoxia in PTBM facies, but interbedded shelly faunas indicate oxygenated water, perhaps there was short-term pulsing of normally saturated anoxic water from the oxygen-minimum zone to surface waters. In Tethys, PTBMs show geographic variations: (i) in south China, PTBMs are mostly thrombolites in open shelf settings, largely recrystallised, with remnant structure of Renalcis-group calcimicrobes; (ii) in south Turkey, in shallow waters, stromatolites and thrombolites, lacking calcimicrobes, are interbedded, likely depth-controlled; and (iii) in the Middle East, especially Iran, stromatolites and thrombolites (calcimicrobes uncommon) occur in different sites on open shelves, where controls are unclear. Thus, PTBMs were under more complex control than previously portrayed, with local facies control playing a significant role in their structure and composition. © 2011 Blackwell Publishing Ltd.

  6. Ostracods (Crustacea associated with microbialites across the Permian-Triassic boundary in Dajiang (Guizhou Province, South China

    Directory of Open Access Journals (Sweden)

    Marie-Beatrice FOREL

    2012-08-01

    Full Text Available 26 samples were processed for a taxonomic study of ostracods from the Upper Permian (Changhsingian - Lower Triassic (Griesbachian interval of the Dajiang section, Guizhou Province, South China. 112 species belonging to 27 genera are recognized. Five new species are described: Acratia candyae sp. nov, Bairdia adelineae sp. nov., Bairdia? huberti sp. nov., Bairdia jeromei sp. nov., Orthobairdia jeanlouisi sp. nov. The unexpected survival faunas associated with microbial formations in the aftermath of the end-Permian extinction are documented for the first time. Ostracod biodiversity variations and palaeo-environmental modifications associated with microbial growth through the Permian-Triassic boundary (PTB are discussed.

  7. New results of microfaunal and geochemical investigations in the Permian-Triassic boundary interval from the Jadar Block (NW Serbia)

    Science.gov (United States)

    Sudar, Milan N.; Kolar-Jurkovšek, Tea; Nestell, Galina P.; Jovanović, Divna; Jurkovšek, Bogdan; Williams, Jeremy; Brookfield, Michael; Stebbins, Alan

    2018-04-01

    Detail results of microfaunal, sedimentological and geochemical investigations are documented from a newly discovered section of the Permian-Triassic boundary (PTB) interval in the area of the town of Valjevo (northwestern Serbia). The presence of various and abundant microfossils (conodonts, foraminifers, and ostracodes) found in the Upper Permian "Bituminous limestone" Formation enabled a determination of the Changhsingian Hindeodus praeparvus conodont Zone. This paper is the first report of latest Permian strata from the region, as well as from all of Serbia, where the PTB interval sediments have been part of a complex/integrated study by means of biostratigraphy and geochemistry.

  8. The Cannery Formation--Devonian to Early Permian arc-marginal deposits within the Alexander Terrane, Southeastern Alaska

    Science.gov (United States)

    Karl, Susan M.; Layer, Paul W.; Harris, Anita G.; Haeussler, Peter J.; Murchey, Benita L.

    2011-01-01

    The Cannery Formation consists of green, red, and gray ribbon chert, siliceous siltstone, graywacke-chert turbidites, and volcaniclastic sandstone. Because it contains early Permian fossils at and near its type area in Cannery Cove, on Admiralty Island in southeastern Alaska, the formation was originally defined as a Permian stratigraphic unit. Similar rocks exposed in Windfall Harbor on Admiralty Island contain early Permian bryozoans and brachiopods, as well as Mississippian through Permian radiolarians. Black and green bedded chert with subordinate lenses of limestone, basalt, and graywacke near Kake on Kupreanof Island was initially correlated with the Cannery Formation on the basis of similar lithology but was later determined to contain Late Devonian conodonts. Permian conglomerate in Keku Strait contains chert cobbles inferred to be derived from the Cannery Formation that yielded Devonian and Mississippian radiolarians. On the basis of fossils recovered from a limestone lens near Kake and chert cobbles in the Keku Strait area, the age of the Cannery Formation was revised to Devonian and Mississippian, but this revision excludes rocks in the type locality, in addition to excluding bedded chert on Kupreanof Island east of Kake that contains radiolarians of Late Pennsylvanian and early Permian age. The black chert near Kake that yielded Late Devonian conodonts is nearly contemporaneous with black chert interbedded with limestone that also contains Late Devonian conodonts in the Saginaw Bay Formation on Kuiu Island. The chert cobbles in the conglomerate in Keku Strait may be derived from either the Cannery Formation or the Saginaw Bay Formation and need not restrict the age of the Cannery Formation, regardless of their source. The minimum age of the Cannery Formation on both Admiralty Island and Kupreanof Island is constrained by the stratigraphically overlying fossiliferous Pybus Formation, of late early and early late Permian age. Because bedded radiolarian

  9. Palaeomagnetism of the Early Permian Mount Leyshon Intrusive Complex and Tuckers Igneous Complex, North Queensland, Australia

    Science.gov (United States)

    Clark, D. A.; Lackie, M. A.

    2003-06-01

    This study provides reliable, precisely defined and well-dated Early Permian (286 +/- 6 Ma) palaeomagnetic poles for Australia from the Mount Leyshon Intrusive Complex (MLIC) and the Tuckers Igneous Complex (TIC). Both complexes are associated with prominent negative magnetic anomalies, indicating the presence of rocks carrying stable remanence of reverse polarity, with a Koenigsberger ratio greater than unity. The characteristic remanence carried by the intrusive phases and by locally remagnetized, contact-metamorphosed host rocks is always of reverse polarity, consistent with acquisition during the Permo-Carboniferous (Kiaman) Reverse Superchron. The corresponding palaeopoles confirm that Australia occupied high latitudes in the Early Permian. The pole positions are: MLIC: lat. = 43.2 °S, long. = 137.3 °E dp = 6.0°, dm = 6.4° Q= 6; TIC: lat. = 47.5 °S, long. = 143.0 °E, dp = 6.0°, dm = 6.6° Q= 6. Permian palaeomagnetic overprinting is detectable at considerable distances from the MLIC (2-3 km), well beyond the zone of visible alteration. The primary nature of the Early Permian palaeomagnetic signature is established by full baked contact/aureole tests at both localities. Other new data from Australia are consistent with the poles reported here. Comparison of the Australian, African and South American Apparent Polar Wander Paths (APWP) suggests that mean Permian and Triassic poles from West Gondwana, particularly from South America, are biased by remagnetization in the Jurassic-Cretaceous and that the Late Palaeozoic-Mesozoic APWP for Gondwana is best defined by Australian data. The Australian APWP exhibits substantial movement through the Mesozoic. Provided only that the time-averaged palaeofield was zonal, the Early Triassic palaeomagnetic data from Australia provide an important palaeogeographic constraint that the south geographic pole was within, or very close to, SE Australia around 240 Ma. The new Early Permian poles are apparently more consistent

  10. Europan 7 Eestis : Lasnamäe. Pärnu / Tiit Trummal, Andres Kurg

    Index Scriptorium Estoniae

    Trummal, Tiit, 1954-

    2004-01-01

    Võistluse "Äärelinna võimalus, linnalik intensiivsus ja elamise mitmekesisus" Eesti-Rootsi ühisžüriis Eestist Urmas Muru, Tiit Trummal, Andres Kurg. Tallinna Lasnamäe (14 tööd) ja Pärnu (47 tööd) võistlusalast, võitnud tööde arhitektide loetelu ja võitnud töödest. Lasnamäe: I preemia - autor hispaanlane Andres Fernandes Atela, kaasautorid prantslased Mathieu Andrieu ja Iman Morshedi. Pärnu: I preemia - autorid rumeenlane Oana-Maria Bogdan, ameeriklane Susan Kelly Shannon, argentiinlane Laura Vescina, hispaanlased Juny Llach ja Parra Colacios

  11. A REMAINING OPEN PALEOGEOGRAPHY OF PALEO-ASIAN OCEAN BY EARLY PERMIAN: PALEOMAGNETIC CONSTRAINTS FROM THE PERMIAN VOLCANIC ROCKS IN MIDDLE-EAST INNER MONGOLIA, NE CHINA

    Directory of Open Access Journals (Sweden)

    Donghai Zhang

    2017-01-01

    Full Text Available We report a paleomagnetic investigation on Permian volcanic rocks in the middle-east Inner Mongolia, NE China, aiming to puzzle out the timing and position of the final closure of the eastern Paleo-Asian ocean (PAO and further to better understand tectonic evolution of the Central Asian Orogenic Belt (CAOB. Two pre-folding characteristic components are isolated from the Sanmianjing and Elitu formations (~283–266 Ma in the northern margin of the North China block (NMNCB and the Dashizhai Formation (~280 Ma in the Songliao-Xilinhot block (SXB, respectively.

  12. Séminaire de probabilités XXXIX in memoriam Paul-André Meyer

    CERN Document Server

    Yor, Marc

    2006-01-01

    The 39th volume of Séminaire de Probabilités is a tribute to the memory of Paul André Meyer. His life and achievements are recalled; homages are rendered by his friends and colleagues. This volume also contains mathematical contributions to classical and quantum stochastic calculus, the theory of processes, martingales and their applications to mathematical finance, Brownian motion. They provide an overview on the current trends of stochastic calculus.

  13. Sexualcoercion: Woman Subordination Undergone By Hanna X In Andre Brink's The Otherside Of Silence Novel

    OpenAIRE

    NUSANTI, RIHAN

    2014-01-01

    Nusanti, Rihan. 2014. “Sexual Coercion: Woman Subordination Undergoneby Hanna X in Andre Brink's The Otherside of Silence novel”. Study Programof English, Department of Languages and Literature, Faculty of Cultural Studies,Universitas Brawijaya. Supervisor: Fariska Pujiyanti, M.Hum; Co-supervisor: Winda Candra Hantari,M.A. Keywords: Feminist-Marxist, sexual coercion, patriarchy, women subordination,German women In traditional view, women occupy secondary position lower than men in society. It...

  14. Analysis of lichen species for atmospheric pollution biomonitoring in the Santo Andre municipality, Sao Paulo, Brazil

    International Nuclear Information System (INIS)

    Saiki, M.; Alves, E.R.; Marcelli, M.P.

    2007-01-01

    Instrumental neutron activation analysis was applied for the determination of trace elements in Canoparmelia texana species collected in nonpolluted areas of Atlantic Forest and in six sites of Santo Andre Municipality, SP, Brazil. Concentrations of As, Ba, Br, Ca, Cd, Cl, Cr, Cs, Co, Fe, K, La, Mn, Na, Rb, Sb, Sc, Se, U, and Zn were determined and comparisons were made between the results obtained in lichens from different sites

  15. André B. Muller (25.9.1918-1.4.2006)

    Science.gov (United States)

    West, R. M.

    2006-06-01

    With great sadness, we have learned about the death of André Muller on 1 April, at the age of 87. Living in retirement in his native Holland since 1983, he was one of ESOs true pioneers, an outstanding representative of the select group of European astronomers who succeeded in steering ESO through the difficult initial phases. André was close-ly associated with the entire process, from the first site monitoring programmes in South Africa to the subsequent search in Chile, the decision in favour of the La Silla site, as well as the management of ESOs early activities in Chile, includ-ing the construction of the headquarters and observatory and the installation of the first generation of ESO telescopes. Few persons, if any, have been so inti-mately connected to the setting-up of ESOs facilities and it would be impossible to list in detail all of the services André performed for the organisation with such great expertise and zeal during his long career.

  16. “O Negro André”: a questão racial na vida e no pensamento do abolicionista André Rebouças

    Directory of Open Access Journals (Sweden)

    Anita Maria Pequeno Soares

    2017-08-01

    Full Text Available The main objective of this work was to analyze how the context of racial relations influenced the construction of the self and the intellectual production of black intellectual and abolitionist André Rebouças. Through primary sources, it was possible to recreate the process of “self construction” lived by André Rebouças as a black man who had African ancestry. It was possible to notice that some characteristics of his social thought became radical at the same time the self-recognition of his racial condition became deeper, during the period in which he was self-exiled from Brazil, immediately after the proclamation of the republic in 1889. During his life in Africa, he broke his silence about his racial reality. In this period, the construction of his self goes through a transformation, as he begins to see himself and to reaffirm himself as a black and African man. This awaken to “racial consciousness” was interpreted, like Mattos suggested (2010, inspired by the concept of “double consciousness”, elaborated by Du Bois and further developed by Paul Gilroy in “The Black Atlantic” (2012.

  17. A latest Permian non-reef calcisponge fauna from Laibin, Guangxi, southern China and its significance

    Directory of Open Access Journals (Sweden)

    Ya-Sheng Wu

    2017-01-01

    Full Text Available A calcisponge fauna occurs in uppermost Permian Conodont Clarkina meishanensis yini zone of the sequence exposed in the vicinity of Laibin, Guangxi Zhuang Autonomous Region, southern China. The fauna is dominated by one thalamid species, Amblysiphonella vesiculosa de Koninck, 1863, and one new sclerosponge genus and species, Radiofibrosclera laibinensis gen. et sp. nov. They are associated with a few other accessory species, including the thalamid sponges Amblysiphonella laibinensis Deng, 1981, Colospongia sp., Polycystocoelia sp., and the inozoan sponge Acoelia discontinua sp. nov. Though the individuals are abundant, the species diversity is very low. Without common calcisponge components of Changhsingian reefal faunas, the assemblage is interpreted as not a reefal fauna. The water depth at which they dwelled was less than 105 m, and more probably less than 40 m. Its occurrence indicates a significant sea-level drop at the end of Late Permian Changhsingian Age.

  18. U-Th-Geochemistry of Permian and Triassic sediments of the Drauzug, Carinthia, Austria

    International Nuclear Information System (INIS)

    Kurat, G.; Korkisch, J.; Niedermayr, G.; Seemann, R.

    1976-05-01

    Chemical analysis of samples of Triassic and Permian rocks from the Drauzug, Carinthia and Austria was carried out. U concentration was measured by flurimetry, Th and Cu by spectrophotometry using Thoronol method or Arsenazo III method for Th, Fe by titrimetry and V, Ba, Sr by atomic absorption spectrophotometry. The average U concentration ranged from 0.8 to 4.6 ppm and the Th concentration from 3.2 to 15.6 ppm depending upon the mineral material. The quartzporphyries contained the highest concentration of both. It was concluded that the Permian-Triassic series are very similar to the equivalent deposits in Northern Italy. Assuming a lateral displacement, the former represent the Northern marginal part of the latter and therefore are inferior in thickness and thus not favourable for larger U mineralization

  19. Carbon isotope variations in the upper Carboniferous - Permian Mallemuk Mountain Group, eastern North Greenland

    International Nuclear Information System (INIS)

    Stemmerik, L.; Magaritz, M.

    1989-01-01

    Isotope data from Late Palaeozoic limestones of the Wandel Sea Basin in eastern North Greenland show a variation of δ 13 C from 0.0 0/00 to 5.7 0/00 vs PDB. Carbonates depleted in 13 C occur in the basal part of lower Moscovian, upper Moscovian and middle Gzhelian transgressive sequences. 13 C enriched limestones occur later in the cycles. The most 13 C enriched limestones occur in the youngest (late Early Permian-early Late Permian) part of the sequence in Amdrup Land. The isotopic data is believed to represent changes in the global carbon cycle. Thus 13 C enriched carbonates correlate to periods of burial of organic carbon mostly as coal, while 13 C depleted carbonates formed as the result of erosion and oxidation of organic carbon during sea-level low stands. (author)

  1. Juvenile-adult habitat shift in permian fossil reptiles and amphibians.

    Science.gov (United States)

    Bakker, R T

    1982-07-02

    Among extant large reptiles, juveniles often occupy different habitats from those of adults or subadults and thus avoid competition with and predation from the older animals; small juveniles often choose cryptic habitats because they are vulnerable to a wide variety of predators. Evidence from fossil humeri and femora of Early Permian reptiles collected from sediments of several distinct habitats indicate that similar shifts in habitat occurred. Juvenile Dimetrodon seem to have favored cryptic habitats around swamp and swampy lake margins; adults favored open habitats on the floodplains. Similar patterns of habitat shift seem to be present in the reptile Ophiacodon and the amphibian Eryops and may have been common in fossil tetrapods of the Permian-Triassic.

  2. 75 FR 38412 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

    Science.gov (United States)

    2010-07-02

    ...-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary... waters of San Diego Bay in support of the San Diego POPS Fireworks. This safety zone is necessary to... San Diego POPS Fireworks, which will include fireworks presentations conducted from a barge in San...

  3. Subsurface Permian reef complexes of southern Tunisia: Shelf carbonate setting and paleogeographic implications

    Science.gov (United States)

    Zaafouri, Adel; Haddad, Sofiene; Mannaî-Tayech, Beya

    2017-05-01

    2-D seismic reflection sections, borehole data as well as published and unpublished data have been investigated to reconstruct the paleogeography of southern Tunisia during Middle to Late Permian times. Paleogeographical reconstruction based on the integration of petroleum well data and 2-D seismic facies interpretation shows three main depositional areas with very contrasting sedimentary pile. These are 1) a subsiding basin; 2) an outer shelf carbonate, and 3) an inner shelf carbonate. Based on typical electric responses of reef buildups to seismic wave, we shall urge that during Middle Permian times, the outer carbonate shelf was subject of reef barrier development. Lithology evidences from core samples show that reef framework correspond mainly to fossiliferous limestone and dolomite. The WNW-ESE recognized reef barrier led between latitudes 33° 10‧ 00″N and 33° 20‧ 00″N. The Tebaga of Medenine outcrop constitutes the northern-edge of this barrier. Westward it may be extended to Bir Soltane area whereas its extension eastward is still to be determined. Biogenic buildups took place preferentially over faulted Carboniferous and lower Paleozoic paleohighs resulting likely from the Hercynian orogeny. The subsiding basin is located north of Tebaga of Medenine outcrop where Upper Permian sedimentary sequence is made entirely of 4000 m deep marine green silty shale facies. These are ascribed to unorganized and chaotic reflectors. Inner carbonate shelf facies succession corresponds to a typical interbedding of shallow marine carbonate deposits, shale, dolomite, and anhydrite inducing parallel-layered of strong amplitude and good continuity reflectors. Also within the inner carbonate shelf patch reef or reef pinnacles have been identified based on their seismic signature particularly their low vertical development as compared to reef complexes. Southward, towards Sidi Toui area, the Upper Permian depositional sequence thins out and bears witness of land

  4. Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin.

    Science.gov (United States)

    Khan, Naima A; Engle, Mark; Dungan, Barry; Holguin, F Omar; Xu, Pei; Carroll, Kenneth C

    2016-04-01

    Growth in unconventional oil and gas has spurred concerns on environmental impact and interest in beneficial uses of produced water (PW), especially in arid regions such as the Permian Basin, the largest U.S. tight-oil producer. To evaluate environmental impact, treatment, and reuse potential, there is a need to characterize the compositional variability of PW. Although hydraulic fracturing has caused a significant increase in shale-oil production, there are no high-resolution organic composition data for the shale-oil PW from the Permian Basin or other shale-oil plays (Eagle Ford, Bakken, etc.). PW was collected from shale-oil wells in the Midland sub-basin of the Permian Basin. Molecular characterization was conducted using high-resolution solid phase micro extraction gas chromatography time-of-flight mass spectrometry. Approximately 1400 compounds were identified, and 327 compounds had a >70% library match. PW contained alkane, cyclohexane, cyclopentane, BTEX (benzene, toluene, ethylbenzene, and xylene), alkyl benzenes, propyl-benzene, and naphthalene. PW also contained heteroatomic compounds containing nitrogen, oxygen, and sulfur. 3D van Krevelen and double bond equivalence versus carbon number analyses were used to evaluate molecular variability. Source composition, as well as solubility, controlled the distribution of volatile compounds found in shale-oil PW. The salinity also increased with depth, ranging from 105 to 162 g/L total dissolved solids. These data fill a gap for shale-oil PW composition, the associated petroleomics plots provide a fingerprinting framework, and the results for the Permian shale-oil PW suggest that partial treatment of suspended solids and organics would support some beneficial uses such as onsite reuse and bio-energy production. Copyright © 2016 Elsevier Ltd. All rights reserved.

  5. Evidence for a western extension of the Angaran phytogeographic province in the Early Permian

    Energy Technology Data Exchange (ETDEWEB)

    Sunderlin, David [Department of the Geophysical Sciences, University of Chicago, Chicago, IL, 60637 (United States)

    2010-08-01

    A newly described Early Permian fossil plant assemblage in the Mt. Dall conglomerate in the Farewell terrane (Alaska Range, USA) is analyzed from a paleobiogeographic perspective. These data constitute the youngest paleontological dataset yet discovered in this terrane, represent the terrane's only predominantly terrestrial fossil assemblage, and are the only plant macrofossil remains of Early Permian age within a > 1500 km radius today. A suite of multivariate statistical analyses comparing the Mt. Dall paleoflora to similar age (Asselian-Artinskian) collections from the Angaran, Euramerican, and Cathaysian Permian phytogeographic provinces reveals that the Mt. Dall paleoflora has a paleobiogeographic affinity with Sub-Angaran plant fossil assemblages collected from Mongolia and the Primorye region of southeastern Russia. The paleoflora has dual importance in the construction and testing of hypotheses for which there are geographically and temporally few controls. First, these data may be used in association with other faunal and floral remains to test models of the assembly of Alaska, which seek, in part, an understanding of the paleogeographic and lithological origins of accreted terranes. That the Mt. Dall paleoflora indicates mixed Eurasia-North America paleobiogeographic affinity among individual taxa and plots in multivariate space with mid-latitude assemblages on northern Pangea may suggest deposition in that latitudinal belt. Second, contrary to the well-sampled fossil plant-bearing Permo-Carboniferous of the paleotropics and the northeastern temperate Pangean regions (Angaraland), terrestrial biome structure and vegetation type of northwestern Pangea are poorly known. This lack of understanding is due to the paucity of paleofloral collections from this region in this time period and the paleogeographic uncertainty of their position along the ancient active margin of Laurentia. The Mt. Dall paleoflora's phytogeographic affinity to paleobotanical

  6. Ocean Acidification and the End-Permian Mass Extinction: To What Extent does Evidence Support Hypothesis?

    OpenAIRE

    Kershaw, Stephen; Crasquin, Sylvie; Li, Yue; Collin, Pierre-Yves; Forel, Marie-Béatrice

    2012-01-01

    Ocean acidification in modern oceans is linked to rapid increase in atmospheric CO2, raising concern about marine diversity, food security and ecosystem services. Proxy evidence for acidification during past crises may help predict future change, but three issues limit confidence of comparisons between modern and ancient ocean acidification, illustrated from the end-Permian extinction, 252 million years ago: (1) problems with evidence for ocean acidification preserved in sedimentary rocks, wh...

  7. Ocean Acidification and the End-Permian Mass Extinction: To What Extent does Evidence Support Hypothesis?

    OpenAIRE

    Kershaw , Stephen; Crasquin , Sylvie; Li , Yue; Collin , Pierre-Yves; Forel , Marie-Béatrice

    2012-01-01

    International audience; Ocean acidification in modern oceans is linked to rapid increase in atmospheric CO 2 , raising concern about marine diversity, food security and ecosystem services. Proxy evidence for acidification during past crises may help predict future change, but three issues limit confidence of comparisons between modern and ancient ocean acidification, illustrated from the end-Permian extinction, 252 million years ago: (1) problems with evidence for ocean acidification preserve...

  8. Magnetic microsperules in Permian and Triassic bedded chert from Southwest Japan

    OpenAIRE

    Iwahashi,Junko; Yoshida,Masaru; Miono,Shigeyoshi; Santosh,Geetha; Santosh,M.

    1991-01-01

    Magnetic microspherules collected from the Permian and Triassic bedded cherts in Southwest Japan were studied. The size range, as estimated from 801 microspherules, vary from 3 to 100μm, with a peak size distribution between 10-20μm. Three broad shapes are recognized : spherical-, drop- and rocket-shaped, all categories including hollow particles. The surface textures as studied from scanning electron microscope show five dominant varieties : random mosaic, dendritic mosaic, feather crystal, ...

  9. The flora of Early Permian coal measures from the Parana Basin in Brazil: A review

    International Nuclear Information System (INIS)

    Iannuzzi, Roberto

    2010-01-01

    This paper presents an updated overview integrating both previous and newly published data on the most important floras found associated with Early Permian coal seams in the Parana Basin, Brazil. These floras occur within the Rio Bonito Formation and correspond to the Gondwana ''Glossopteris Flora.'' For this review, five floras are selected, in ascending stratigraphic order: the ''Sao Joao do Triunfo,'' ''Figueira,'' ''Quiteria,'' ''Morro do Papaleo'' and ''Irapua Bed'' floras. They are the best-known floras of the basin in terms of taxonomic composition, paleoecology and environments of deposition. An early-mid Sakmarian to earliest Artinskian age is indicated for the Rio Bonito Formation based on absolute radiometric and relative biostratigraphic ages. Integration of available information about the selected floras allows evaluation of taphonomic and paleoecological factors to provide a more comprehensive understanding of the Early Permian floral record in the Parana Basin. The variation observed in both the taxonomic composition of individual floras and in the frequency of occurrence of different plant groups is due to the broad range of environmental/edaphic conditions that prevailed in the many different depositional settings represented in the Rio Bonito Formation. A more precise age determination obtained for the plant-bearing deposits permits the establishment of a more confident correlation between the Early Permian floral succession in the Parana Basin and other Early Permian floral successions in other basins. The Sakmarian global warming favored the appearance of pecopterid and sphenopterid ferns amongst the spore-producing plants, and the glossopterids amongst the pollen-producing plants. (author)

  10. Prolonged Permian–Triassic ecological crisis recorded by molluscan dominance in Late Permian offshore assemblages

    OpenAIRE

    Clapham, Matthew E.; Bottjer, David J.

    2007-01-01

    The end-Permian mass extinction was the largest biotic crisis in the history of animal life, eliminating as many as 95% of all species and dramatically altering the ecological structure of marine communities. Although the causes of this pronounced ecosystem shift have been widely debated, the broad consensus based on inferences from global taxonomic diversity patterns suggests that the shift from abundant brachiopods to dominant molluscs was abrupt and largely driven by the catastrophic effec...

  11. Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin

    Science.gov (United States)

    Khan, Naima A.; Engle, Mark A.; Dungan, Barry; Holguin, F. Omar; Xu, Pei; Carroll, Kenneth C.

    2016-01-01

    Growth in unconventional oil and gas has spurred concerns on environmental impact and interest in beneficial uses of produced water (PW), especially in arid regions such as the Permian Basin, the largest U.S. tight-oil producer. To evaluate environmental impact, treatment, and reuse potential, there is a need to characterize the compositional variability of PW. Although hydraulic fracturing has caused a significant increase in shale-oil production, there are no high-resolution organic composition data for the shale-oil PW from the Permian Basin or other shale-oil plays (Eagle Ford, Bakken, etc.). PW was collected from shale-oil wells in the Midland sub-basin of the Permian Basin. Molecular characterization was conducted using high-resolution solid phase micro extraction gas chromatography time-of-flight mass spectrometry. Approximately 1400 compounds were identified, and 327 compounds had a >70% library match. PW contained alkane, cyclohexane, cyclopentane, BTEX (benzene, toluene, ethylbenzene, and xylene), alkyl benzenes, propyl-benzene, and naphthalene. PW also contained heteroatomic compounds containing nitrogen, oxygen, and sulfur. 3D van Krevelen and double bond equivalence versus carbon number analyses were used to evaluate molecular variability. Source composition, as well as solubility, controlled the distribution of volatile compounds found in shale-oil PW. The salinity also increased with depth, ranging from 105 to 162 g/L total dissolved solids. These data fill a gap for shale-oil PW composition, the associated petroleomics plots provide a fingerprinting framework, and the results for the Permian shale-oil PW suggest that partial treatment of suspended solids and organics would support some beneficial uses such as onsite reuse and bio-energy production.

  12. Permian vegetational Pompeii from Inner Mongolia and its implications for landscape paleoecology and paleobiogeography of Cathaysia.

    Science.gov (United States)

    Wang, Jun; Pfefferkorn, Hermann W; Zhang, Yi; Feng, Zhuo

    2012-03-27

    Plant communities of the geologic past can be reconstructed with high fidelity only if they were preserved in place in an instant in time. Here we report such a flora from an early Permian (ca. 298 Ma) ash-fall tuff in Inner Mongolia, a time interval and area where such information is filling a large gap of knowledge. About 1,000 m(2) of forest growing on peat could be reconstructed based on the actual location of individual plants. Tree ferns formed a lower canopy and either Cordaites, a coniferophyte, or Sigillaria, a lycopsid, were present as taller trees. Noeggerathiales, an enigmatic and extinct spore-bearing plant group of small trees, is represented by three species that have been found as nearly complete specimens and are presented in reconstructions in their plant community. Landscape heterogenity is apparent, including one site where Noeggerathiales are dominant. This peat-forming flora is also taxonomically distinct from those growing on clastic soils in the same area and during the same time interval. This Permian flora demonstrates both similarities and differences to floras of the same age in Europe and North America and confirms the distinct character of the Cathaysian floral realm. Therefore, this flora will serve as a baseline for the study of other fossil floras in East Asia and the early Permian globally that will be needed for a better understanding of paleoclimate evolution through time.

  13. A paleoclimatic simulation of the Late Permian greenhouse world and its consequences

    Energy Technology Data Exchange (ETDEWEB)

    Moore, G.T.; Jacobson, S.R.; Hayashida, D.N. (Chevron Oil Field Research Co., La Habra, CA (United States))

    1991-03-01

    Sea-floor spreading assembled all the major cratonic blocks into a single supercontinent once in the Phanerozoic Eon. This unique Late Permian crustal tectonic event produced Pangaea and an enormous oceanic basin volume that dropped sea level to a global lowstand unrivaled in the Phanerozoic. Two paleoclimatic simulations using a numerical three-dimensional general circulation model tested changes in the greenhouse effect. The authors conclude that for a simulation to fit the Late Permian geologic record, the paleoatmosphere must contain an enhanced greenhouse gas effect. A third simulation tested changes of paleogeography in southern Pangaea (Gondwana) that did not appreciably alter the harsh continental paleoclimate. The simulated paleoclimatic changes provide extraordinarily warm ocean and atmosphere, and a significant reduction in continental rainfall and runoff. These conditions inevitably lead to more aridity and less vegetation on land, gradually reduce the delivery of vital nutrients from continental sources to marine margins, systematically liberate CO{sub 2} dissolved in ocean water, and incrementally increase stress on marine and terrestrial biotas. These consequences severely disrupted rates of oxygen and carbon cycling. Their quantitative paleoclimatic simulation is consistent with distributions of red beds, evaporites, coals, marine shelf areas, seawater isotope trends, and paleontologic originations and extinctions. Thus, the Pangaean plate assembly probably triggered an inexorable sequence of geophysical, geochemical, and biological events that forced an elevated greenhouse effect in the Late Permian, nearly annihilating the Phanerozoic biota.

  14. Repeated Carbon-Cycle Disturbances at the Permian-Triassic Boundary Separate two Mass Extinctions

    Science.gov (United States)

    Nicol, J. A.; Watson, L.; Claire, M.; Buick, R.; Catling, D. C.

    2004-12-01

    Non-marine organic matter in Permian-Triassic sediments from the Blue Mountains, eastern Australia shows seven negative δ13C excursions of up to 7%, terminating with a positive excursion of 4%. Fluctuations start at the late Permian Glossopteris floral extinction and continue until just above the palynological Permian-Triassic boundary, correlated with the peak of marine mass extinction. The isotopic fluctuations are not linked to changes in depositional setting, kerogen composition or plant community, so they evidently resulted from global perturbations in atmospheric δ13C and/or CO2. The pattern was not produced by a single catastrophe such as a meteorite impact, and carbon-cycle calculations indicate that gas release during flood-basalt volcanism was insufficient. Methane-hydrate melting can generate a single -7% shift, but cannot produce rapid multiple excursions without repeated reservoir regeneration and release. However, the data are consistent with repeated overturning of a stratified ocean, expelling toxic gases that promoted sequential mass extinctions in the terrestrial and marine realms.

  15. Permian-Triassic Tethyan realm reorganization: Implications for the outward Pangea margin

    Science.gov (United States)

    Riel, Nicolas; Jaillard, Etienne; Martelat, Jean-Emmanuel; Guillot, Stéphane; Braun, Jean

    2018-01-01

    We present a new conceptual model to explain the first order Permian-Triassic evolution of the whole > 30 000 km long Pangea margin facing the Panthalassa ocean. Compilation of available geological, geochemical, geochronogical and paleomagnetic data all along this system allowed us to distinguish three part of the margin: western Laurentia, western Gondwana and eastern Gondwana. These segments record distinct tectonic and magmatic events, which all occur synchronously along the whole margin and correlate well with the main geodynamic events of this period, i.e. subduction of the Paleotethys mid-ocean ridge at 310-280 Ma, opening of the Neotethys at 280-260 Ma, counterclockwise rotation of Pangea at 260-230 Ma and closure of the Paleotethys at 230-220 Ma. Between 260 and 230 Ma, the reorganization of the Tethyan realm triggered the up to 35° rotation of Pangea around an Euler pole located in northernmost South America. This implied both an increase and a decrease of the convergence rate between the margin and the Panthalassa ocean, north and south of the Euler pole, respectively. Thus, the Permian-Triassic Pangean margin was marked: in western Laurentia by marginal sea closure, in western Gondwana by widespread bimodal magmatic and volcanic activity, in eastern Gondwana by transpressive orogenic phase. Therefore, we propose that the Permian-Triassic evolution of the outward margin of Pangea was controlled by the Tethyan realm reorganization.

  16. Geochronologic evidence of a large magmatic province in northern Patagonia encompassing the Permian-Triassic boundary

    Science.gov (United States)

    Luppo, Tomás; López de Luchi, Mónica G.; Rapalini, Augusto E.; Martínez Dopico, Carmen I.; Fanning, Christopher M.

    2018-03-01

    The Los Menucos Complex (northern Patagonia) consists of ∼6 km thick succession of acidic and intermediate volcanic and pyroclastic products, which has been traditionally assigned to the Middle/Late Triassic. New U/Pb (SHRIMP) zircon crystallization ages of 257 ± 2 Ma at the base, 252 ± 2 Ma at an intermediate level and 248 ± 2 Ma near the top of the sequence, indicate that this volcanic event took place in about 10 Ma around the Permian-Triassic boundary. This volcanism can now be considered as the effusive terms of the neighboring and coeval La Esperanza Plutono-Volcanic Complex. This indicates that the climax of activity of a large magmatic province in northern Patagonia was coetaneous with the end-Permian mass extinctions. Likely correlation of La Esperanza- Los Menucos magmatic province with similar volcanic and plutonic rocks across other areas of northern Patagonia suggest a much larger extension than previously envisaged for this event. Its age, large volume and explosive nature suggest that the previously ignored potential role that this volcanism might have played in climatic deterioration around the Permian-Triassic boundary should be investigated.

  17. Late Permian to Triassic intraplate orogeny of the southern Tianshan and adjacent regions, NW China

    Directory of Open Access Journals (Sweden)

    Wei Ju

    2014-01-01

    Based on previous studies and recent geochronogical data, we suggest that the final collision between the Tarim Craton and the North Asian continent occurred during the late Carboniferous. Therefore, the Permian was a period of intracontinental environment in the southern Tianshan and adjacent regions. We propose that an earlier, small-scale intraplate orogenic stage occurred in late Permian to Triassic time, which was the first intraplate process in the South Tianshan Orogen and adjacent regions. The later large-scale and well-known Neogene to Quaternary intraplate orogeny was induced by the collision between the India subcontinent and the Eurasian plate. The paper presents a new evolutionary model for the South Tianshan Orogen and adjacent regions, which includes seven stages: (I late Ordovician–early Silurian opening of the South Tianshan Ocean; (II middle Silurian–middle Devonian subduction of the South Tianshan Ocean beneath an active margin of the North Asian continent; (III late Devonian–late Carboniferous closure of the South Tianshan Ocean and collision between the Kazakhstan-Yili and Tarim continental blocks; (IV early Permian post-collisional magmatism and rifting; (V late Permian–Triassic the first intraplate orogeny; (VI Jurassic–Palaeogene tectonic stagnation and (VII Neocene–Quaternary intraplate orogeny.

  18. Global nickel anomaly links Siberian Traps eruptions and the latest Permian mass extinction.

    Science.gov (United States)

    Rampino, Michael R; Rodriguez, Sedelia; Baransky, Eva; Cai, Yue

    2017-09-29

    Anomalous peaks of nickel abundance have been reported in Permian-Triassic boundary sections in China, Israel, Eastern Europe, Spitzbergen, and the Austrian Carnic Alps. New solution ICP-MS results of enhanced nickel from P-T boundary sections in Hungary, Japan, and Spiti, India suggest that the nickel anomalies at the end of the Permian were a worldwide phenomenon. We propose that the source of the nickel anomalies at the P-T boundary were Ni-rich volatiles released by the Siberian volcanism, and by coeval Ni-rich magma intrusions. The peaks in nickel abundance correlate with negative δ 13 C and δ 18 O anomalies, suggesting that explosive reactions between magma and coal during the Siberian flood-basalt eruptions released large amounts of CO 2 and CH 4 into the atmosphere, causing severe global warming and subsequent mass extinction. The nickel anomalies may provide a timeline in P-T boundary sections, and the timing of the peaks supports the Siberian Traps as a contributor to the latest Permian mass extinction.

  19. Environmental characterization of bedded salt formations and overlying areas of the Permian Basin

    International Nuclear Information System (INIS)

    1983-07-01

    This report constitutes one input to the first stage of site qualification studies. It presents a general environmental characterization of the region that is underlain by the Permian bedded salt formation. The formation covers portions of Colorado, Kansas, New Mexico, Oklahoma, and Texas. The Permian bedded salt formation is one of a number of deep, stable geologic formations being studied for potential locations for nuclear waste repositories. These studies will not necessarily lead to selection of a site. They are intended only to provide information necessary to evaluate the suitability of locations for repositories. The report is intended as a general characterization of the existing environmental setting of the Permian Region with emphasis on land, water, and air characteristics; resources; plant and animal life; and man's organizations and activities. The report provides background information about the role that this regional study will play in the overall plan for environmental impact assessments and statements deemed necessary as input to the decision-making process. Background information on the present concept of nuclear waste repository design and function is also included. The information presented in this report has been summarized from open literature readily accessible to the public. No field work was conducted nor new data used in developing the descriptions contained herein

  20. Far-travelled permian chert of the North Fork terrane, Klamath mountains, California

    Science.gov (United States)

    Mankinen, E.A.; Irwin, W.P.; Blome, C.D.

    1996-01-01

    Permian chert in the North Fork terrane and correlative rocks of the Klamath Mountains province has a remanent magnetization that is prefolding and presumably primary. Paleomagnetic results indicate that the chert formed at a paleolatitude of 8.6?? ?? 2.5?? but in which hemisphere remains uncertain. This finding requires that these rocks have undergone at least 8.6?? ?? 4.4?? of northward transport relative to Permian North America since their deposition. Paleontological evidence suggests that the Permian limestone of the Eastern Klamath terrane originated thousands of kilometers distant from North America. The limestone of the North Fork terrane may have formed at a similar or even greater distance as suggested by its faunal affinity to the Eastern Klamath terrane and more westerly position. Available evidence indicates that convergence of the North Fork and composite Central Metamorphic-Eastern Klamath terranes occurred during Triassic or Early Jurassic time and that their joining together was a Middle Jurassic event. Primary and secondary magnetizations indicate that the new composite terrane containing these and other rocks of the Western Paleozoic and Triassic belt behaved as a single rigid block that has been latitudinally concordant with the North American craton since Middle Jurassic time.

  1. SURVEY OF BENTHIC DINOFLAGELLATES ASSOCIATED TO BEDS OF Thalassia testudinum IN SAN ANDRÉS ISLAND, SEAFLOWER BIOSPHERE RESERVE, CARIBBEAN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Brigitte Gavio

    2010-05-01

    Full Text Available In order to determine the occurrence of epiphytic toxic dinoflagellates in the coastal waters of San Andrés Island, Caribbean Colombia, we analyzed the seagrass beds on the northern and eastern sides of the island. We found seven species of toxicogenic dinoflagellates, belonging to the genera Prorocentrum and Ostreopsis. The cell densities were generally low if compared with previous studies in other Caribbean sites, ranging from 0 to 836 cells/dry weight. The species encountered are known to produce toxins causing the Diarrehic Shellfish Poisoning and Ciguatera, poisonings which have been documented in the island.

  2. Geology of the Pennsylvanian and Permian Culter Group and Permian Kaibab Limestone in the Paradox Basin, southeastern Utah and southwestern Colorado

    Science.gov (United States)

    Condon, Steven M.

    1997-01-01

    The Cutler Formation is composed of thick, arkosic, alluvial sandstones shed southwestward from the Uncompahgre highlands into the Paradox Basin. Salt tectonism played an important role in deposition of the Cutler in some areas. In the northeast part of the basin, more than 8,000 ft, and as much as 15,000 ft, of arkose was trapped between rising salt anticlines - this arkose is thin to absent over the crests of some anticlines. In the western and southern parts of the basin, the Cutler is recognized as a Group consisting of, in ascending order: the lower Cutler beds, Cedar Mesa Sandstone, Organ Rock Formation, White Rim Sandstone, and De Chelly Sandstone. The aggregate thickness of these formations is less than 2,000 ft. The formations of the Cutler Group were deposited in a complex system of alluvial, eolian, and marine environments characterized by abrupt vertical and lateral lithologic changes. The basal Cutler is Pennsylvanian in age, but the bulk of the Group was deposited during the Permian. The Cutler is conformably underlain by the Pennsylvanian Hermosa Group across most of the basin. It is overlain unconformably by the Permian Kaibab Limestone in the western part of the Paradox Basin. The Cutler or Kaibab are overlain unconformably by the Triassic Moenkopi or Chinle Formations.

  3. Permo-triassic volcanism in the San Rafael Block (Mendoza province) and its uraniferous potential

    International Nuclear Information System (INIS)

    Kleiman, L.E.

    1993-01-01

    This paper describes the Permo-triassic volcanism in the San Rafael Block, Mendoza, Argentina, which forms part of the Choiyoi province and it represents by large volumes of intermediate to silicic ignimbrites with minor sub volcanic bodies of rhyolites, andesites and basandesites. Three different suites can be distinguished: the first one (Lower Section) of Early Permian age, is composed of dacites and rhyolites (SiO 2 up to 71 %) with minor andesites, the second one (Upper Section) of Late Permian-Early Triassic age is made up of rhyolites (SiO 2 up to 77 %) with some basandesites and andesites, and the third one, of Triassic age is composed of rhyolites (SiO 2 > 75 %) and basandecites. These suites are easily distinguished by means of trace element data and are believed to represent the transition between a subduction-related magmatic arc and an extensional tectonic regime. This tectonic setting is similar to the prevalent during the Cenozoic in the Sierra Occidental of Mexico and is favourable for the development of long-lived hydrothermal systems which lead to economic U concentrations (i.e. Sierra de Pena Blanca). In the San Rafael Block, the Dr. Baulies-Los Reyunos U deposit, which is hosted in volcanic sediments, is associated to the first suite (Lower Section). Although minor U concentrations are known, up to date, to be related to the second and third suites, these rocks are fertile and seen to be potential source for the formation of uranium deposits within a volcanic caldera environment. (Author)

  4. Global taxonomic diversity of anomodonts (tetrapoda, therapsida and the terrestrial rock record across the Permian-Triassic boundary.

    Directory of Open Access Journals (Sweden)

    Jörg Fröbisch

    Full Text Available The end-Permian biotic crisis (~252.5 Ma represents the most severe extinction event in Earth's history. This paper investigates diversity patterns in Anomodontia, an extinct group of therapsid synapsids ('mammal-like reptiles', through time and in particular across this event. As herbivores and the dominant terrestrial tetrapods of their time, anomodonts play a central role in assessing the impact of the end-Permian extinction on terrestrial ecosystems. Taxonomic diversity analysis reveals that anomodonts experienced three distinct phases of diversification interrupted by the same number of extinctions, i.e. an end-Guadalupian, an end-Permian, and a mid-Triassic extinction. A positive correlation between the number of taxa and the number of formations per time interval shows that anomodont diversity is biased by the Permian-Triassic terrestrial rock record. Normalized diversity curves indicate that anomodont richness continuously declines from the Middle Permian to the Late Triassic, but also reveals all three extinction events. Taxonomic rates (origination and extinction indicate that the end-Guadalupian and end-Permian extinctions were driven by increased rates of extinction as well as low origination rates. However, this pattern is not evident at the final decline of anomodont diversity during the Middle Triassic. Therefore, it remains unclear whether the Middle Triassic extinction represents a gradual or abrupt event that is unique to anomodonts or more common among terrestrial tetrapods. The end-Permian extinction represents the most distinct event in terms of decline in anomodont richness and turnover rates.

  5. San Francisco folio, California, Tamalpais, San Francisco, Concord, San Mateo, and Haywards quadrangles

    Science.gov (United States)

    Lawson, Andrew Cowper

    1914-01-01

    The five sheets of the San Francisco folio the Tamalpais, Ban Francisco, Concord, Ban Mateo, and Haywards sheets map a territory lying between latitude 37° 30' and 38° and longitude 122° and 122° 45'. Large parts of four of these sheets cover the waters of the Bay of San Francisco or of the adjacent Pacific Ocean. (See fig. 1.) Within the area mapped are the cities of San Francisco, Oakland, Berkeley, Alameda, Ban Rafael, and San Mateo, and many smaller towns and villages. These cities, which have a population aggregating about 750,000, together form the largest and most important center of commercial and industrial activity on the west coast of the United States. The natural advantages afforded by a great harbor, where the railways from the east meet the ships from all ports of the world, have determined the site of a flourishing cosmopolitan, commercial city on the shores of San Francisco Bay. The bay is encircled by hilly and mountainous country diversified by fertile valley lands and divides the territory mapped into two rather contrasted parts, the western part being again divided by the Golden Gate. It will therefore be convenient to sketch the geographic features under four headings (1) the area east of San Francisco Bay; (2) the San Francisco Peninsula; (3) the Marin Peninsula; (4) San Francisco Bay. (See fig. 2.)

  6. Ecrire à la suite de : Andrée Lacelle, Andrée Christensen et Jacques Flamand, Paul Savoie et Dyane Léger

    Directory of Open Access Journals (Sweden)

    Catherine Parayre

    2012-05-01

    Full Text Available « Ecrire à la suite de » est un procédé d’écriture courant dans la littérature, qu’il s’agisse de mettre en relief l’intertextualité de l’œuvre (par exemple, en incluant des citations, de s’adonner à un travail basé sur l’intermédialité (par exemple, dans un texte rédigé à partir de photographies ou encore d’écrire à quatre mains, lorsqu’un des deux auteurs ajoute son texte à celui du partenaire d’écriture. Ne faisant pas exception, les littératures francophones du Canada pratiquent tout aussi fréquemment cette écriture de l’après. Le présent article en examinera quelques exemples dans des œuvres de nature introspective : La lumière et l’heure : poèmes et carnets (2004 d’Andrée Lacelle, avec des tableaux de Réjine Halimi ; Lithochronos ou le premier vol de la pierre (1999 d’Andrée Christensen et Jacques Flamand, avec des photographies de Christensen ; et L’incendiaire (2008 de Paul Savoie et Dyane Léger. L’analyse montrera que l’écriture « à la suite de », aussi variées qu’en soient les manifestations, non seulement met en évidence la présence de l’auteur dans ces textes, mais a aussi pour résultat, dans ces œuvres méditatives, de dédramatiser et d’amenuiser l’intensité de la réflexion existentielle.

  7. The end-Permian regression in the western Tethys: sedimentological and geochemical evidence from offshore the Persian Gulf, Iran

    Science.gov (United States)

    Tavakoli, Vahid; Naderi-Khujin, Mehrangiz; Seyedmehdi, Zahra

    2018-04-01

    Detailed sedimentological and geochemical records across the Permian-Triassic boundary (PTB) in five offshore wells of the central Persian Gulf served to interpret the end-Permian sea-level change in this region. A decrease in sea level at the PTB was established by petrographical and geochemical study of the boundary. Thin sections showed that Upper Permian strata are composed of dolomite with minor anhydrite, changing into limestone in Lower Triassic sediments. Brine dilution toward the boundary supports sea-level fall in the Permian-Triassic transition, reflected by a decrease in anhydrite content and a shallowing-upward trend from lagoonal to peritidal facies. Isotopic changes at the boundary are in favor of sea-level fall. Changes in both carbon (from about 4 to -1‰) and oxygen (from 2 to -5‰) stable isotopes show negative excursions. The shift in carbon isotope values is a global phenomenon and is interpreted as resulting from carbonate sediment interaction with 12C-rich waters at the end-Permian sea-level fall. However, the oxygen isotope shift is attributed to the effect of meteoric waters with negative oxygen isotope values. The increase in strontium isotope ratios is also consistent with the high rate of terrestrial input at the boundary. The effect of meteoric conditions during diagenesis is evident from vuggy and moldic porosities below the PTB. The following transgression at the base of the Triassic is evident from the presence of reworked fossils and intraclasts resulting from deposition from agitated water.

  8. CONODONT BIOSTRATIGRAPHY AND LITHOSTRATIGRAPHY ACROSS THE PERMIAN-TRIASSIC BOUNDARY AT THE LUKAC SECTION IN WESTERN SLOVENIA

    Directory of Open Access Journals (Sweden)

    TEA KOLAR-JURKOVSEK

    2011-03-01

    Full Text Available Detailed conodont biostratigraphy and lithostratigraphy of the Late Permian and Early Triassic beds were studied at the LukaC section in western Slovenia. The analyzed section is composed of the Bellerophon Formation ("evaporite-dolomite member" and the newly introduced Lukaè Formation ("transitional beds", "streaky limestone member" and "carbonate-clastic beds member". The Permian-Triassic boundary interval is represented by "transitional beds" of carbonate facies deposited in shallow restricted marine conditions. The presence of H. parvus in sample L1 in the "transitional beds" marks the systemic boundary between Permian and Triassic. The studied interval is characterized by a diverse microfauna that contain conodonts, foraminifers, ostracods and gastropods. Six conodont zones have been recognized, in ascending order, the latest Changhsingian (uppermost Permian praeparvus Zone, and the Griesbachian (lowermost Triassic parvus, lobata, staeschei-isarcica, postparvus and anceps zones. This faunal succession represents the first known and the most complete conodont biozonation across the Permian-Triassic interval from the entire Dinaric region. The recognized conodont biozones can be correlated with the biozonation of the Southern Alps and of the GSSP Meishan D section. 

  9. Jacobsens ukendte samling af stensager fra den græske oldtid. Obsidian, økser, matricer, ansigtssten og andre sjældne oldsager

    DEFF Research Database (Denmark)

    Sørensen, Lasse

    2012-01-01

    Jacobsens ukendte samling af stensager fra den græske oldtid. Obsidian, økser, matricer, ansigtssten og andre sjældne oldsager......Jacobsens ukendte samling af stensager fra den græske oldtid. Obsidian, økser, matricer, ansigtssten og andre sjældne oldsager...

  10. Teresa Andrés y la organización Cultura Popular: una propuesta de coordinación bibliotecaria (1936-1938

    Directory of Open Access Journals (Sweden)

    Seguí i Francés, Romà

    2011-12-01

    Full Text Available Teresa Andrés Zamora es conocida por su actividad al frente de la Sección de Bibliotecas de Cultura Popular. Este trabajo describe las relaciones que se establecieron entre Teresa Andrés y Cultura Popular, tras hacerse cargo de las responsabilidades del Ministerio de Instrucción Pública.

  11. Book Review: America’s Blind Spot: Chávez, Oil and US Security by Andrés Cala and Michael Economides

    DEFF Research Database (Denmark)

    Boscan, Luis

    2014-01-01

    Review of: America’s Blind Spot: Chávez, Oil and US Security. Andrés Cala and Michael Economides. Continuum Books. 2012.......Review of: America’s Blind Spot: Chávez, Oil and US Security. Andrés Cala and Michael Economides. Continuum Books. 2012....

  12. Fromleik i Black Supper, Piss Christ og Crucifixion, tre fotografi av Andres Serrano

    OpenAIRE

    Vinje, Lilly

    2006-01-01

    Oppgåva skal omhandla tre utvalgte foto av fotografen Andres Serrano, ein amerikanar født i 1950. Enkeltbileta det er snakk om er Black Supper (1990), Piss Christ og Crucifixion (begge 1987). Dei er laga ved at kitschfigurar er nedsenka i gjennomsiktige behaldarar fyllte av kroppsvæsker og vatn; vatn i Black Supper, urin i Piss Christ og blod i Crucifixion. Henholdsvis framstiller dei Nattverden, Jesus på krossen og Krossfestinga (tre figurar). Serrano befinn seg med desse innanfor religiøs k...

  13. Harju Elekter väärtustab strateegilist partnerlust / Andres Aarma

    Index Scriptorium Estoniae

    Aarma, Andres

    2003-01-01

    Autor kirjeldab elektriseadmete ja -materjalide tootja, ettevõtte Harju Elekter edu põhjuseid läbi olulisemate strateegiliste juhtimisotsuste, personalijuhtimise, tootmise ning toodangu turustamise. Kommenteerivad Sander Danil, Jako Kotkas, Andres Vainola, Rein Siim ja Triin Palge. Diagrammid: Harju Elektri käive, eksport ja kasum, turud käibe järgi, tegevusalad käibe järgi. Skeemid: Harju Elektri tütar- ja sidusettevõtted, organisatsiooni struktuur. Vt. samas intervjuud Harju Elektri nõukogu esimehe Endel Pallaga; Harju Elektri kontsern täna. Lisad: Harju Elektri olulisemad koostöölepingud, laenude tagatised ja panditud vara

  14. Andres Bello and the Dissemination of Astronomy: Education and Scientific Rhetoric

    Directory of Open Access Journals (Sweden)

    Verónica Ramírez Errázuriz

    2017-12-01

    Full Text Available This paper analyzes the astronomical texts written by Andres Bello between 1810 and 1848, from its educational nature to its rhetorical expression, suggesting that their main purpose was to show the advances in the field - in terms of knowledge production and also technology development- in order to improve the material and intellectual environment of the nation. It also stands that astronomy should be tought by activating creativity and imagination, which may be linked with Bello’s willing to avoid science and art develop apart from each other, keeping, in this case astronomy bonded with literature.

  15. Andre Hellegers and Carroll House: architect and blueprint for the Kennedy Institute of Ethics.

    Science.gov (United States)

    Harvey, John Collins

    2004-06-01

    The Newman programs established at secular colleges and universities provided an opportunity for intellectual, spiritual, and social growth among the Catholic student population. As a young physician and junior medical faculty member, Andre Hellegers took part in the early organization and ongoing work of Carroll House, the Newman Center at the Johns Hopkins Medical Institutions. Helleger's experience at Carroll House enabled him to develop a clear blueprint of an academic center of excellence for the scientific, theological, and philosophical exploration of the many problems that he had seen and foresaw in medicine. That center would become Georgetown's Kennedy Institute of Ethics.

  16. Jovens de Santo André, SP, Brasil: Um estudo sobre valores em diferentes grupos sociais

    OpenAIRE

    Sheila Aparecida Ferreira Lachtim

    2010-01-01

    Esta dissertação se propõe a: apreender valores sociais contemporâneos, notadamente aqueles referidos ao consumo de drogas, discutir diferenças entre esses valores nos diferentes grupos sociais; e analisar possíveis relações entre esses valores. Trata-se de um estudo qualitativo de caráter exploratório, descritivo e analítico que utilizou um roteiro de entrevista semi-estruturada para apreensão do objeto. Um total de 86 jovens participou, de diferentes regiões do município de Santo André, SP,...

  17. Lean versus Quick Response Manufacturing og andre koncepter - er Lean den eneste ene?

    DEFF Research Database (Denmark)

    Michelsen, Aage U

    2005-01-01

    Begrebet Lean har gennem de senere år vundet en enorm udbredelse. Antallet af publikationer om Lean har været eksplosivt stigende, og mange virksomheder har gennemført eller gennemfører Lean-projekter. Er Lean et nyt koncept? Er Lean den eneste løsning? Kan Lean kombineres med tankegange og princ...... løsning af en anden produktionsopgave. I fjerde afsnit skitseres kort relationerne mellem Lean og to andre begreber, Six Sigma og TPM, der begge har samme mål som Lean, men forskellige udgangspunkter og forskellige indfaldsvinkler....

  18. APA/APAGS Award for Distinguished Graduate Student in Professional Psychology: Octavio Andres Santos.

    Science.gov (United States)

    2017-12-01

    The APA/APAGS Award for Distinguished Graduate Student in Professional Psychology is awarded annually by the APA Board of Professional Affairs (BPA) and the American Psychological Association of Graduate Students (APAGS) to a graduate student who has demonstrated outstanding practice and application of psychology. The 2017 award winner is Octavio Andres Santos, who has demonstrated through several initiatives "effective engagement with advocacy, professional organizations, and research in the area of health disparities and multicultural/multilingual assessment." Santos's award citation, biography, and a selected bibliography are presented here. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  19. The Carboniferous - Permian basins of Central and Western Bohemia, the Krkonoše Mt. foreland and the Bohemian Massif, Czech Republic : part I

    Czech Academy of Sciences Publication Activity Database

    Opluštil, S.; Martínek, K.; Lojka, R.; Rosenau, N.; Zajíc, Jaroslav; Šimůnek, Z.; Drábková, J.; Štamberg, S.

    2014-01-01

    Roč. 46, č. 1 (2014), s. 14-54 ISSN 1433-1284. [Field Meeting on Carboniferous and Permian Nonmarine – Marine Correlation. Freiberg, 21.07.2014-27.07.2014] Institutional support: RVO:67985831 Keywords : Carboniferous * Permian * excursion guide Subject RIV: DB - Geology ; Mineralogy

  20. 76 FR 1386 - Safety Zone; Centennial of Naval Aviation Kickoff, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2011-01-10

    ...-AA00 Safety Zone; Centennial of Naval Aviation Kickoff, San Diego Bay, San Diego, CA AGENCY: Coast... zone on the navigable waters of San Diego Bay in San Diego, CA in support of the Centennial of Naval... February 12, 2010, the Centennial of Naval Aviation Kickoff will take place in San Diego Bay. In support of...

  1. André Leroi-Gourhan (25 août 1911–19 février 1986)

    OpenAIRE

    Soulier, Philippe

    2007-01-01

    André Leroi-Gourhan (25th August 1911 – 19th February 1986) A short biography of André Leroi-Gourhan is here presented, beginning in 1927, at the moment of his student years, until his retirement in 1982. It rests on a systematic analysis of his publications and on his personal and professional archives, collected and studied for the first time in 2001 when the author was temporally engaged by the CNRS. Going beyond the pure biography of events, such as those already presented in numerous po...

  2. AND/R: Advanced neutron diffractometer/reflectometer for investigation of thin films and multilayers for the life sciences

    International Nuclear Information System (INIS)

    Dura, Joseph A.; Pierce, Donald J.; Majkrzak, Charles F.; Maliszewskyj, Nicholas C.; McGillivray, Duncan J.; Loesche, Mathias; O'Donovan, Kevin V.; Mihailescu, Mihaela; Perez-Salas, Ursula; Worcester, David L.; White, Stephen H.

    2006-01-01

    An elastic neutron scattering instrument, the advanced neutron diffractometer/reflectometer (AND/R), has recently been commissioned at the National Institute of Standards and Technology Center for Neutron Research. The AND/R is the centerpiece of the Cold Neutrons for Biology and Technology partnership, which is dedicated to the structural characterization of thin films and multilayers of biological interest. The instrument is capable of measuring both specular and nonspecular reflectivity, as well as crystalline or semicrystalline diffraction at wave-vector transfers up to approximately 2.20 A -1 . A detailed description of this flexible instrument and its performance characteristics in various operating modes are given

  3. Postsotsialismist vaatemängulinna = From Post-Socialism to the City of the Spectacle / Andres Kurg

    Index Scriptorium Estoniae

    Kurg, Andres, 1975-

    2007-01-01

    Büroo Alver Trummal Arhitektid töödest, Andres Alverist ja Tiit Trummalist. Ärihoonest Tallinnas Rävala pst. 4. Autorid: Andres Alver, Tiit Trummal, Tarmo Laht, Indrek Rünkla, Ulla Mets, Sven Koppel. Konstruktor Eido Uustalu (Eesti Projekt). Projekt 2001, valmis 2006. City Plazast Tallinnas Tartu mnt. 2. Autorid: A. Alver, T. Trummal, T. Laht, I. Rünkla, Martin Melioranski, U. Mets. Konstruktor: Tiit Masso, Pike Projekt. Sisekujundus (fuajeed, restoran): Pille Lausmäe. Projekt 2001, valmis 2004. Lõige, põhiplaan, 3 värv. välis- ja 5 sisevaadet

  4. The new Permian-Triassic paleomagnetic pole for the East European Platform corrected for inclination shallowing

    Science.gov (United States)

    Fetisova, A. M.; Veselovskiy, R. V.; Scholze, F.; Balabanov, Yu. P.

    2018-01-01

    The results of detailed paleomagnetic studies in seven Upper Permian and Lower Triassic reference sections of East Europe (Middle Volga and Orenburg region) and Central Germany are presented. For each section, the coefficient of inclination shallowing f (King, 1955) is estimated by the Elongation-Inclination (E-I) method (Tauxe and Kent, 2004) and is found to vary from 0.4 to 0.9. The paleomagnetic directions, corrected for the inclination shallowing, are used to calculate the new Late Permian-Early Triassic paleomagnetic pole for the East European Platform (N = 7, PLat = 52.1°, PLong = 155.8°, A95 = 6.6°). Based on this pole, the geocentric axial dipole hypothesis close to the Paleozoic/Mesozoic boundary is tested by the single plate method. The absence of the statistically significant distinction between the obtained pole and the average Permian-Triassic (P-Tr) paleomagnetic pole of the Siberian Platform and the coeval pole of the North American Platform corrected for the opening of the Atlantic (Shatsillo et al., 2006) is interpreted by us as evidence that 250 Ma the configuration of the magnetic field of the Earth was predominantly dipolar; i.e., the contribution of nondipole components was at most 10% of the main magnetic field. In our opinion, the hypothesis of the nondipolity of the geomagnetic field at the P-Tr boundary, which has been repeatedly discussed in recent decades (Van der Voo and Torsvik, 2001; Bazhenov and Shatsillo, 2010; Veselovskiy and Pavlov, 2006), resulted from disregarding the effect of inclination shallowing in the paleomagnetic determinations from sedimentary rocks of "stable" Europe (the East European platform and West European plate).

  5. Riparian Habitat - San Joaquin River

    Data.gov (United States)

    California Natural Resource Agency — The immediate focus of this study is to identify, describe and map the extent and diversity of riparian habitats found along the main stem of the San Joaquin River,...

  6. Configuration of the magnetic field and reconstruction of Pangaea in the Permian period.

    Science.gov (United States)

    Westphal, M

    1977-05-12

    The virtual geomagnetic poles of Laurasia and Gondwanaland in the Carboniferous and Permian periods diverge significantly when these continents are reassembled according to the fit calculated by Bullard et al. Two interpretations have been offered: Briden et al. explain these divergences by a magnetic field configuration very different from that of a geocentric axial dipole; Irving (and private communication), Van der Voo and French(4) suggest a different reconstruction and it is shown here that these two interpretations are not incompatible and that the first may help the second.

  7. A new tubeworm of possible serpulid affinity from the Permian of Sicily

    Directory of Open Access Journals (Sweden)

    Rossana Sanfilippo

    2016-08-01

    Full Text Available A new tubeworm, Palaeotubus sosiensis gen. et sp. nov., is described from the Permian Pietra di Salomone limestone (Sosio Valley, W Sicily. The new species is characterized by a thick tube ornamented with slightly flared peristomes and numerous longitudinal keels. The internal structure of the tube was obliterated during diagenesis, which prevents the tube unequivocal systematic attribution. Nevertheless, all preserved morphological characters strongly suggest that the new tube belongs to serpulids. When confirmed by further findings, the positive attribution of this new species to serpulids will imply that it represents the ancestor of the Serpulidae, and the earliest evidence of calcareous tubeworm polychaetes from the Palaeozoic.

  8. Sponge assemblage of some Upper Permian reef limestones from Phrae province (Northern Thailand

    Directory of Open Access Journals (Sweden)

    Baba Senowbari-Daryan

    1994-12-01

    Full Text Available The sponge fauna of uppermost Permian reef or reefal limestones of the Phrae province in northern Thailand include representatives of hexactinellida, sclerospongea,"sphinctozoans", and "inozoans". The "sphinctozoans" and "inozoans"are described in detail. Following taxa are new:"Sphinctozoans": Phraethalamia tubulara n. gen., n. sp., Ambithalamia pérmican. gen., n. sp."Inozoans": Bisiphonella tubulara n. sp., Solutossaspongia crassimuralis n.gen., n. sp.The genus name Belyaevaspongia nom. nov. is proposed for PolysiphonellaBelyaeva, 1991 (in Boiko et al., 1991, non Polysiphonella Russo, 1981.

  9. Stratigraphy and paleontology of Lower Permian rocks north of Cananea, northern Sonora, Mexico

    Science.gov (United States)

    Blodgett, R.B.; Moore, T.E.; Gray, F.

    2002-01-01

    Lower Permian carbonate and overlying red bed clastic rocks are present in a 2 km2 stratigraphic window in the vicinity of Rancho La Cueva, Santa Cruz sheet (scale 1:50,000), northern Sonora, Mexico. This exposure lies unconformably beneath predominantly intermediate Upper Cretaceous volcanics yielding 40Ar/39Ar ages of 73.4?? 0.18 and 71.1 ?? 0.35 Ma. The lower part of the Permian succession consists of light- to medium-gray colored limestones of the Colina Limestone, with a minimum thickness of 235 m. Sedimentary features suggest shallow water, slightly restricted depositional environments. Although lacking observable fossils for the most part, two intervals of richly fossiliferous, silicified shell beds are present near the base and top of the Colina Limestone. The lower fauna consist mostly of gastropods and bivalves. The presence of a new microdomatid gastropod species. Glyptospira sonorensis n. sp., close to Glytospira arelela Plas, suggests a late Wolfcampian age for this horizon. The upper fauna are predominantly molluscan dominated (gastropods and bivalves), but some brachiopods (productids and the rhynchonellid genus Pontisia) are also present. Gastropod genera include Bellerophon, Warthia, Euomphalus (represented by the species, Euomphalus kaibabensis Chronic), Baylea, Worthenia, Naticopsis, Goniasma, Kinishbia, Cibecuia, and Glyptospira. The gastropods suggest a Leonardian (late Early Permian) age for this horizon, and many of the species have previously been recorded from the Supai Group and Kaibab Formation of northern and central Arizona. The Colina Limestone is conformably overlain by 11.2 m of light-gray lime mudstone and dolostone, assigned here to the Epitaph Dolomite, which in turn is succeeded by 58.8 m of red-colored sandstone and gray lime mudstone, assigned here to the Scherrer Formation. This Lower Permian succession is significant because it further strengthens the stratigraphic ties of southeastern Arizona rocks with those of northern

  10. Amount and nature of occluded water in bedded salt, Palo Duro Basin, Texas

    International Nuclear Information System (INIS)

    Fisher, R.S.

    1987-01-01

    The quantity and types of fluids within bedded salt cores from the Permian San Andres Formation, Palo Duro, Texas, were evaluated at the Texas Bureau of Economic Geology. Bedded halite from the San Andres Formation and other salt-bearing units were selected to represent the variety of salt types present, and were then analyzed. The mean water content of ''pure'' samples (more than 90% halite) is 0.4 weight percent, with none observed greater than 1.0 weight percent. Samples that contain more than 10 weight percent clay or mudstone display a trend of increasing water content with increasing clastic material. Chaotic mudstone-halite samples have as much as 5 weight percent water; halite-cemented mudstone interlayers, common throughout the bedded salts, may have water content values as high as 10 to 15 weight percent based on extrapolation of existing data that range from 0 to about 6%. No significant difference exists between the mean water content values of ''pure salt'' from the upper San Andres, lower San Andres Cycle 5, and lower San Andres Cycle 4 salt units. The fraction of total water present as mobile intergranular water is highly variable and not readily predicted from observed properties of the salt sample. The amount of water that would be affected by a high-level nuclear waste repository can be estimated if the volume of halite, the volume of clastic interlayers, and the amount and type of impurity in halite are known. Appendix contains seven vugraphs

  11. La astronomía de un humanista, Juan Andrés

    Directory of Open Access Journals (Sweden)

    José Antonio SANDUVETE CHAVES

    2009-11-01

    Full Text Available RESUMEN: La páginas que siguen pretenden ofrecer una visión de conjunto del análisis que de la historia de la Astronomía realiza Juan Andrés, desde los orígenes de la humanidad hasta el siglo XVIII. Este análisis, incluido en su monumental obra Origen, progresos y estado actual de toda la literatura, destaca por su modernidad y precisión, constituyendo, por tanto, una interesante base de comparación entre la visión de la ciencia astronómica del humanismo ilustrado y la que pervive en la actualidad.ABSTRACT: The following pages attempt to offer a full view of the research into the history of astronomy made by Juan Andrés, from the beginning of human culture until the 18th century. This analysis, included in a broader work called Origen, progresos y estado de toda la literatura, stands out on account of its modern and precise ideas, thus representing an interesting knowledge base for comparing the view of astronomy during the Enlightenment with that of the present.

  12. 78 FR 53243 - Safety Zone; TriRock San Diego, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-08-29

    ... this rule because the logistical details of the San Diego Bay triathlon swim were not finalized nor... September 22, 2013. (c) Definitions. The following definition applies to this section: Designated...

  13. Convenio "Andres Bello:" Informe Final [de la] Segunda Reunion de Ministros de Educacion de la Region Andina ("Andres Bello" Agreement: Final Report of the Second Meeting of the Andean Region Ministers of Education).

    Science.gov (United States)

    Ministros de Educacion de la Region Andina, Lima (Peru).

    This final report of the second meeting of the Andean Region Ministers of Education subscribing to the Andres Bello Agreement on education and culture contains a resume of the individual sessions and the proposals approved during that meeting. The proposals cover various educational problems and issues and begin with the Declaration of Lima which…

  14. Uranium potential in outcropping Permian basins in France and their extensions beneath mesozoic and tertiary cover

    International Nuclear Information System (INIS)

    Hery, B.

    1990-01-01

    About a third of metropolitan France's uranium production is from Permian deposits located in the Lodeve and, to a lesser extent, Bourbon-l'Archambault basins. Of the Autun, west Vanoise, St-Affrique, Rodez, Brive and Var basins investigated in this study, only those of Rodez and Var have been shown to contain significant deposits. Some of the basins contain potentially interesting targets, often removed from the areas of known mineral occurrences, that have never been investigated. Geophysical exploration and drilling have shown that the Permian extends over a vast area beneath the cover of the large Mesozoic and Tertiary basins. However zones within reach of mineral exploration, ie. those less than 500 m deep, are only found in a few areas. To reach the distant targets down-dip in the outcropping basins or beneath the Mesozoic and Tertiary cover, a detailed study of the basin must be undertaken beforehand. To define and locate targets that are obviously more costly to investigate, direct methods of investigation need to be used such as drilling and geochemistry, and indirect methods such as remote sensing, geophysics and well-logging [fr

  15. Neutron activation analysis of Permian-Triassic boundary layer samples at the Selong Site in China

    International Nuclear Information System (INIS)

    Miyamoto, Y.; Sakamoto, K.; Mingqing, W.

    1997-01-01

    Thirty samples from a limestone stratum across the Permian-Triassic (P-Tr) boundary layer in China were analyzed for 30 elements by instrumental neutron activation analysis, wavelength dispersive X-ray fluorescence and ICP-MS, and also for mineral compositions with a powder X-ray diffractometer. The depth profile was found to indicate a sudden change of elemental and mineral compositions across the P-Tr boundary. Also the profile showed several peaks in elemental concentrations in the lower Permian layered samples as well as in the overlying Triassic strata, which are associated with the change of mineral compositions. Elemental profiles were found to be classified into 4 groups and to give some insights in the geochemical records. Ir is far less abundant (0.1 ppt) compared with that of the K-T boundaries (10 ppb), and the Ir/Co ratio is outside the K-T and Cl chondrite trends. This change of elementary profile is suggestive of the internal causes rather than the external ones such as an asteroid impact for the mass extinction at the P-Tr boundary. (author)

  16. Geochemical characteristics of the Permian sedimentary rocks from Qiangtang Basin: Constraints for paleoenvironment and paleoclimate

    Directory of Open Access Journals (Sweden)

    Junjie Hu

    2017-01-01

    Full Text Available Qiangtang Basin is expected to become important strategic petroleum exploitation area in China. However, little research has been done on the Permian strata in this area. This paper presents Lower Permian Zhanjin Formation geochemical data from the Jiaomuri area, reconstructing the paleo-depositional environment and providing information for further petroleum exploration. The geochemical characteristics of 19 samples were investigated. These geochemical samples show a developed mud flat characteristic with light rich clay content. The geological data were used to constrain the paleoredox environment, which proved that these sediments were deposited mainly beneath a slightly oxic water column with relatively low paleoproductivity as evidenced by the P/Ti (mean of 0.07 and Ba/Al (mean of 20.5. Palaeoclimate indexes such as the C-value (0.24-1.75 and Sr/Cu (1.28-11.58 reveal a humid climatic condition during Zhanjin Formation sediment deposition. The ω(LaN/ω(YbN ratio values indicate a fast sedimentary rate during the deposition period.

  17. Late Permian wood-borings reveal an intricate network of ecological relationships.

    Science.gov (United States)

    Feng, Zhuo; Wang, Jun; Rößler, Ronny; Ślipiński, Adam; Labandeira, Conrad

    2017-09-15

    Beetles are the most diverse group of macroscopic organisms since the mid-Mesozoic. Much of beetle speciosity is attributable to myriad life habits, particularly diverse-feeding strategies involving interactions with plant substrates, such as wood. However, the life habits and early evolution of wood-boring beetles remain shrouded in mystery from a limited fossil record. Here we report new material from the upper Permian (Changhsingian Stage, ca. 254-252 million-years ago) of China documenting a microcosm of ecological associations involving a polyphagan wood-borer consuming cambial and wood tissues of the conifer Ningxiaites specialis. This earliest evidence for a component community of several trophically interacting taxa is frozen in time by exceptional preservation. The combination of an entry tunnel through bark, a cambium mother gallery, and up to 11 eggs placed in lateral niches-from which emerge multi-instar larval tunnels that consume cambium, wood and bark-is ecologically convergent with Early Cretaceous bark-beetle borings 120 million-years later.Numerous gaps remain in our knowledge of how groups of organisms interacted in ancient ecosystems. Here, Feng and colleagues describe a late Permian fossil wood-boring beetle microcosm, with the oldest known example of complex tunnel geometry, host tissue response, and the presence of fungi within.

  18. Carbon Capture and Storage in the Permian Basin, a Regional Technology Transfer and Training Program

    Energy Technology Data Exchange (ETDEWEB)

    Rychel, Dwight [Petroleum Tech Transfer Council, Oak Hill, VA (United States)

    2013-09-30

    The Permian Basin Carbon Capture, Utilization and Storage (CCUS) Training Center was one of seven regional centers formed in 2009 under the American Recovery and Reinvestment Act of 2009 and managed by the Department of Energy. Based in the Permian Basin, it is focused on the utilization of CO2 Enhanced Oil Recovery (EOR) projects for the long term storage of CO2 while producing a domestic oil and revenue stream. It delivers training to students, oil and gas professionals, regulators, environmental and academia through a robust web site, newsletter, tech alerts, webinars, self-paced online courses, one day workshops, and two day high level forums. While course material prominently features all aspects of the capture, transportation and EOR utilization of CO2, the audience focus is represented by its high level forums where selected graduate students with an interest in CCUS interact with Industry experts and in-house workshops for the regulatory community.

  19. Regional summary and recommended study areas for the Texas Panhandle portion of the Permian Basin

    International Nuclear Information System (INIS)

    1983-12-01

    This report summarizes the regional geologic and environmental characterizations that have been completed for the Permian region of study, and describes the procedure used to identify study areas for the next phase of investigation. The factors evaluated in the Permian region fall into three broad areas: health and safety, environmental and socioeconomic, and engineering and economic considerations. Health and safety considerations included salt depth and thickness, faults, seismic activity, groundwater, salt dissolution, energy and mineral resources, presence of boreholes, and interactive land uses. Salt depth and thickness was the key health and safety factor, and when mapped, provded to be a discriminator. The evaluation of environmental and socioeconomic conditions focused primarily on the presence of urban areas and on designated land uses such as parks, wildlife areas, and historic sites. Engineering and economic considerations centered primarily on salt depth, which was already evaluated in the health and safety area. The Palo Duro and Dalhart basins are recommended for future studies on the basis of geology. In these two basins, salt depth and thickness appear promising, and there is less likelihood of past or future oil and gas exploratory holes. Environmental and socioeconomic factors did not preclude any of the basins from further study. 66 references, 16 figures, 2 tables

  20. An early geikiid dicynodont from the Tropidostoma Assemblage Zone (late Permian of South Africa

    Directory of Open Access Journals (Sweden)

    Christian F. Kammerer

    2017-01-01

    Full Text Available Based on specimens previously identified as Tropidostoma, a new taxon of dicynodont (Bulbasaurus phylloxyron gen. et sp. nov. from the Karoo Basin of South Africa is described. Bulbasaurus is a medium-sized dicynodont (maximum dorsal skull length 16.0 cm restricted to the Tropidostoma Assemblage Zone (early Lopingian of the Beaufort Group. Bulbasaurus can be distinguished from Tropidostoma by an array of characters including the presence of a tall, sharp premaxillary ridge, large, rugose, nearly-confluent nasal bosses, a nasofrontal ridge, massive tusks, robust pterygoids, prominently twisted subtemporal bar, and absence of a distinct postfrontal. Inclusion of Bulbasaurus in a phylogenetic analysis of anomodont therapsids recovers it as a member of Geikiidae, a clade of otherwise later Permian dicynodonts such as Aulacephalodon and Pelanomodon. Bulbasaurus exhibits many of the characters typical of adult Aulacephalodon, but at substantially smaller skull size (these characters are absent in comparably-sized Aulacephalodon juveniles, suggesting that the evolution of typical geikiid morphology preceded gigantism in the clade. Bulbasaurus is the earliest known geikiid and the only member of the group known from the Tropidostoma Assemblage Zone; discovery of this taxon shortens a perplexing ghost lineage and indicates that abundant clades from the later Permian of South Africa (e.g., Geikiidae, Dicynodontoidea may have originated as rare components of earlier Karoo assemblage zones.

  1. Catastrophic dispersion of coal fly ash into oceans during the latest Permian extinction

    Energy Technology Data Exchange (ETDEWEB)

    Grasby, S.E.; Sanei, H.; Beauchamp, B. [Geological Survey Canada Calgary, Calgary, AB (Canada)

    2011-02-15

    During the latest Permian extinction about 250 Myr ago, more than 90% of marine species went extinct, and biogeochemical cycles were disrupted globally. The cause of the disruption is unclear, but a link between the eruption of the Siberian Trap flood basalts and the extinction has been suggested on the basis of the rough coincidence of the two events. The flood basalt volcanism released CO{sub 2}. In addition, related thermal metamorphism of Siberian coal measures and organic-rich shales led to the emission of methane, which would have affected global climate and carbon cycling, according to model simulations. This scenario is supported by evidence for volcanic eruptions and gas release in the Siberian Tunguska Basin, but direct indicators of coal combustion have not been detected. Here we present analyses of terrestrial carbon in marine sediments that suggest a substantial amount of char was deposited in Permian aged rocks from the Canadian High Arctic immediately before the mass extinction. Based on the geochemistry and petrology of the char, we propose that the char was derived from the combustion of Siberian coal and organic-rich sediments by flood basalts, which was then dispersed globally. The char is remarkably similar to modern coal fly ash, which can create toxic aquatic conditions when released as slurries. We therefore speculate that the global distribution of ash could have created toxic marine conditions.

  2. Geochemistry of environmentally sensitive trace elements in Permian coals from the Huainan coalfield, Anhui, China

    Science.gov (United States)

    Chen, J.; Liu, Gaisheng; Jiang, M.; Chou, C.-L.; Li, H.; Wu, B.; Zheng, Lingyun; Jiang, D.

    2011-01-01

    To study the geochemical characteristics of 11 environmentally sensitive trace elements in the coals of the Permian Period from the Huainan coalfield, Anhui province, China, borehole samples of 336 coals, two partings, and four roof and floor mudstones were collected from mineable coal seams. Major elements and selected trace elements were determined by inductively coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), and hydride generation atomic absorption spectrometry (HAAS). The depositional environment, abundances, distribution, and modes of occurrence of trace elements were investigated. Results show that clay and carbonate minerals are the principal inorganic constituents in the coals. A lower deltaic plain, where fluvial channel systems developed successively, was the likely depositional environment of the Permian coals in the Huainan coalfield. All major elements have wider variation ranges than those of Chinese coals except for Mg and Fe. The contents of Cr, Co, Ni, and Se are higher than their averages for Chinese coals and world coals. Vertical variations of trace elements in different formations are not significant except for B and Ba. Certain roof and partings are distinctly higher in trace elements than underlying coal bench samples. The modes of occurrence of trace elements vary in different coal seams as a result of different coal-forming environments. Vanadium, Cr, and Th are associated with aluminosilicate minerals, Ba with carbonate minerals, and Cu, Zn, As, Se, and Pb mainly with sulfide minerals. ?? 2011 Elsevier B.V.

  3. Uranium favorability of the San Rafael Swell area, east-central Utah

    International Nuclear Information System (INIS)

    Mickle, D.G.; Jones, C.A.; Gallagher, G.L.; Young, P.; Dubyk, W.S.

    1977-10-01

    The San Rafael Swell project area in east-central Utah is approximately 3,000 sq mi and includes the San Rafael Swell anticline and the northern part of the Waterpocket Fold monocline at Capitol Reef. Rocks in the area are predominantly sedimentary rocks of Pennsylvanian through Cretaceous age. Important deposits of uranium in the project area are restricted to two formations, the Chinle (Triassic) and Morrison (Jurassic) Formations. A third formation, the White Rim Sandstone (Permian), was also studied because of reported exploration activity. The White Rim Sandstone is considered generally unfavorable on the basis of lithologic characteristics, distance from a possible source of uranium, lack of apparent mineralization, and the scarcity of anomalies on gamma-ray logs or in rock, water, and stream-sediment samples. The lower Chinle from the Moss Back Member down to the base of the formation is favorable because it is a known producer. New areas for exploration are all subsurface. Both Salt Wash and Brushy Basin Members of the Morrison Formation are favorable. The Salt Wash Member is favorable because it is a known producer. The Brushy Basin Member is favorable as a low-grade resource

  4. Lineaarse kunstiajaloo aeg on otsas / Edit András ; intervjueerinud R[eet] V[arblane

    Index Scriptorium Estoniae

    András, Edit

    2010-01-01

    Vestlus ungari kunstiteoreetiku- ja ajaloolase Edit Andrásiga, kes osales Tallinnas USA Clarki instituudi ja EKA Kunstiteaduste Instituudi seminaril, kus arutati Kesk- ja Ida-Euroopa kunstiajaloo kirjutamisviiside üle. Seminari tekkimisest, kokkusaamise põhjustest, seminari järeldustest, Eesti ja Ungari kunstiajaloo kirjutamise erinevatest põhimõtetest jm.

  5. Earthworm (Clitellata: Megadrili taxonomy in the last 200 years: A homage to András Zicsi (1928−2015

    Directory of Open Access Journals (Sweden)

    Csuzdi, Cs.

    2016-03-01

    Full Text Available Prof. Dr. András Zicsi, the renowned soil biologist and earthworm taxonomist passed away on 22 July, 2015 at the age of 87. To honour his enormous contribution in exploring earthworm biodiversity all over the world, we provide a brief, albeit subjective overview of the history of earthworm taxonomy in the last two century.

  6. Mis juhtus Andres Lapeteusega? : error'ist kõrgklassi homo soveticus'e näitel / Liisa Kaljula

    Index Scriptorium Estoniae

    Kaljula, Liisa, 1982-

    2014-01-01

    Autor analüüsib 2014. a. Tallinna Semiosalongi loengute sarja põhiteema - error'i mõiste avamiseks ühe inimliigi kujunemislugu - Eesti filmiklassikast tuntud tegelaskuju Andres Lapeteuse tõusu ning langust homo soveticus'ena

  7. Esimene Eesti maja Hiinas = The first Estonian house in China / Andres Põime, Lauri Vaimel ; interv. Triin Ojari

    Index Scriptorium Estoniae

    Põime, Andres

    2008-01-01

    Vestlus Pekingi Eesti saatkonna arhitektuurikonkursi võidutöö autoritega. Tulemused: I preemia - Andres Põime, Lauri Vaimel, II - Erik Nobel, Christian Jensen, Kristen Herup Sovang, Soren Andersson, Pille Kivihall, Dan Ljungar, Hans Willadsen (Taani), III - Kalle Vellevoog, Velle Kadalipp, Tiiu Truus, Martin Prommik

  8. GUÍA DE BUCEO ECOLÓGICO DE SAN ANDRÉS ISLA COLOMBIA

    Directory of Open Access Journals (Sweden)

    MÁRQUEZ GERMÁN

    2010-05-01

    Full Text Available El buceo, tanto a pulmón como con tanques, constituye una actividad que, debidamente practicada, puede aportar al desarrollo sostenible y a la conservación de áreas marinas y en especial de arrecifes de coral, como los del Archipiélago de San Andrés y Providencia. En la medida en que implica la observación de los ecosistemas de arrecife y sus organismos, es una forma de valoración y uso sostenible de la biodiversidad, con la particularidad de que no implica su extracción, pues un mismo arrecife y sus peces, esponjas y otros organismos pueden ser observados por numerosos buzos, una y otra vez. Por otra parte, es una actividad que puede generar significativos ingresos para las regiones que tienen atractivos naturales y para sus pobladores. La GUÍA DE BUCEO ECOLÓGICO DE SAN ANDRÉS ISLA se orienta a promover el buceo como una forma de elevar la calidad y los ingresos generados por el turismo en el Archipiélago y a incrementar la conciencia sobre la necesidad de proteger los arrecifes. Presenta información básica sobre las islas, el turismo en las mismas y sus principales sitios de buceo, profusamente ilustradas con hermosas fotografías que demuestran el indudable potencial de nuestro Archipiélago para el buceo.

  9. Permian arc evolution associated with Panthalassa subduction along the eastern margin of the South China block, based on sandstone provenance and U-Pb detrital zircon ages of the Kurosegawa belt, Southwest Japan

    Science.gov (United States)

    Hara, Hidetoshi; Hirano, Miho; Kurihara, Toshiyuki; Takahashi, Toshiro; Ueda, Hayato

    2018-01-01

    We have studied the petrography, geochemistry, and detrital zircon U-Pb ages of sandstones from shallow-marine forearc sediments, accretionary complexes (ACs), and metamorphosed accretionary complexes (Meta-ACs) within the Kurosegawa belt of Southwest Japan. Those rocks formed in a forearc region of a Permian island arc associated with subduction of the Panthalassa oceanic crust along the eastern margin of the South China block (Yangtze block). The provenance of the shallow-marine sediments was dominated by basaltic to andesitic volcanic rocks and minor granitic rocks during the late Middle to Late Permian. The ACs were derived from felsic to andesitic volcanic rocks during the Late Permian. The provenance of Meta-ACs was dominated by andesitic volcanic rocks in the Middle Permian. The provenance, source rock compositions, and zircon age distribution for the forearc sediments, ACs and Meta-ACs have allowed us to reconstruct the geological history of the Permian arc system of the Kurosegawa belt. During the Middle Permian, the ACs were accreted along the eastern margin of the South China block. The Middle Permian arc was an immature oceanic island arc consisting of andesitic volcanic rocks. During the Late Permian, the ACs formed in a mature arc, producing voluminous felsic to andesitic volcanic rocks. A forearc basin developed during the late Middle to Late Permian. Subsequently, the Middle Permian ACs and part of the Late Permian AC underwent low-grade metamorphism in the Late to Early Jurassic, presenting the Meta-ACs.

  10. Oxygenation in carbonate microbialites and associated facies after the end-Permian mass extinction: Problems and potential solutions

    Directory of Open Access Journals (Sweden)

    Stephen Kershaw

    2018-01-01

    The oxygenation state of post-end-Permian extinction shallow marine facies continues to present a challenge of interpretation, and requires high-resolution sampling and careful attention to small-scale changes, as well as loss of rock through pressure solution, as the next step to resolve the issue.

  11. Anoxia, toxic metals and acidification: volcanically-driven causes of the Middle Permian (Capitanian) mass extinction in NW Pangaea?

    Science.gov (United States)

    Bond, David; Grasby, Stephen; Wignall, Paul

    2017-04-01

    The controversial Capitanian (Middle Permian, 262 Ma) mass extinction, mostly known from equatorial latitudes, has recently been identified in a Boreal setting in Spitsbergen. We now document this extinction in the record of brachiopods from the Sverdrup Basin in NW Pangaea (Ellesmere Island, Canada), confirming Middle Permian losses as a global crisis on par with the "Big Five". Redox proxies (pyrite framboids and trace metals) show that the high latitude crisis coincided with an intensification of oxygen-poor conditions - a potent killer that is not clearly developed in lower latitude sections. Mercury becomes briefly enriched in strata at the level of the Middle Permian extinction level in Spitsbergen and Ellesmere Island, indicating voluminous but short-lived volcanism that is likely to have been the emplacement of the Emeishan large igneous province (LIP) in SW China. A potent cocktail of poisons appears to have impacted across the Boreal Realm, whilst the near-total loss of carbonates near the extinction level is also consistent with reduced pH across the region. Multiple stresses, possibly with origins in low-latitude LIP volcanism, are therefore implicated in the Middle Permian extinction and there was no respite even in the far-distant Boreal Realm.

  12. Assessment of undiscovered oil and gas resources in the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas, 2017

    Science.gov (United States)

    Marra, Kristen R.; Gaswirth, Stephanie B.; Schenk, Christopher J.; Leathers-Miller, Heidi M.; Klett, Timothy R.; Mercier, Tracey J.; Le, Phuong A.; Tennyson, Marilyn E.; Finn, Thomas M.; Hawkins, Sarah J.; Brownfield, Michael E.

    2017-05-15

    Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean resources of 4.2 billion barrels of oil and 3.1 trillion cubic feet of gas in the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas.

  13. Petroleum geological atlas of the southern permian basin area -Overview SPB-atlas project-organisation and results

    NARCIS (Netherlands)

    Doornenbal, J.C.; Abbink, O.A.; Pagnier, H.J.M.; Wees, J.D. van

    2009-01-01

    The Southern Permian Basin (also referred to as Central European Basin) is Europe s largest sedimentary basin. It is a typical intracontinental basin that evolved from latest Carboniferous to recent times and extends from eastern England to the Belarussian-Polish border and from Denmark to South

  14. Progress on the palynostratigraphy of the Permian strata in Rio Grande do Sul State, Paraná Basin, Brazil

    Directory of Open Access Journals (Sweden)

    Souza Paulo A.

    2005-01-01

    Full Text Available A review of published papers and results of analysis of new material have allowed improvements on the palynostratigraphy of the Permian strata of the Paraná Basin in Rio Grande do Sul State. Based on first and last occurrences of certain species of pollen taxa, two palynozones are formalized, these are the Vittatina costabilis and Lueckisporites virkkiae Interval Zones, in ascending order. The Vittatina costabilis Interval Zone is subdivided into two units, in ascending order the Protohaploxypinus goraiensis and the Hamiapollenites karrooensis Subzones, and is recognized from the glacial (Itararé Group and post-glacial sequence (Rio Bonito Formation and the base of the Palermo Formation. The Lueckisporites virkkiae Interval Zone occurs from the uppermost Rio Bonito Formation, through the Palermo and Irati formations, and into the Serra Alta and Teresina formations. The main characteristics and reference sections are established, as well as additional criteria to recognize biostratigraphical units, in accordance with the International Stratigraphic Guide. Palynostratigraphical correlation suggests that the Vittatina costabilis Zone concerns the Early Permian (early Cisuralian, while the Lueckisporites virkkiae is regarded as late Early Permian to early Middle Permian (late Cisularian to early Guadalupian.

  15. The Central European Permian Basins; Rheological and structural controls on basin history and on inter-basin connectivity

    NARCIS (Netherlands)

    Smit, Jeroen; van Wees, Jan-Diederik; Cloetingh, Sierd

    2014-01-01

    We analyse the relative importance of the major crustal-scale fault zones and crustal architecture in controlling basin formation, deformation and the structural connections between basins. The North and South Permian Basins of Central Europe are usually defined by the extend of Rotliegend

  16. A new morphological type of operculate microspore, Discinispora sinensis gen. nov., from the Permian petrified Noeggerathialean strobilus Discinites sinensis Wang

    Czech Academy of Sciences Publication Activity Database

    Wang, J.; Zhang, G.; Bek, Jiří; Pfefferkorn, H. W.

    2004-01-01

    Roč. 128, č. 1 (2004), s. 1-17 ISSN 0034-6667 Grant - others:Chinese National Natural Science Foundation(CN) 40102002; NIGPAS(CN) 003102; NIGPAS(CN) 023117 Institutional research plan: CEZ:AV0Z3013912 Keywords : in situ spores * Noeggerathiales * Permian Subject RIV: DB - Geology ; Mineralogy Impact factor: 0.886, year: 2004

  17. Climatic and biotic changes around the Carboniferous/Permian boundary recorded in the continental basins of the Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Opluštil, S.; Šimůnek, Z.; Zajíc, Jaroslav; Mencl, V.

    2013-01-01

    Roč. 119, č. 1 (2013), s. 114-151 ISSN 0166-5162 Institutional research plan: CEZ:AV0Z30130516 Institutional support: RVO:67985831 Keywords : biotic change * Bohemian Massif * Carboniferous-Permian transition * continental basin Subject RIV: DB - Geology ; Mineralogy Impact factor: 3.313, year: 2013

  18. Carlos Hugo Molina Saucedo. Andrés Ibáñez, un caudillo para el siglo XXI. La Comuna de Santa Cruz de la Sierra de 1876; Andrey Schelchkov. Andrés Ibáñez y la Revolución de la Igualdad en Santa Cruz: primer ensayo de federalismo en Bolivia, 1876-1877

    Directory of Open Access Journals (Sweden)

    Clayton Mendonça Cunha Filho

    2014-11-01

    Full Text Available Carlos Hugo Molina Saucedo. Andrés Ibáñez, un caudillo para el siglo XXI. La Comuna de Santa Cruz de la Sierra de 1876Andrey Schelchkov. Andrés Ibáñez y la Revolución de la Igualdad en Santa Cruz: primer ensayo de federalismo en Bolivia, 1876-1877

  19. El neopaleozoico de la Sierra de Castaño (Cordillera Frontal andina, San Juan, Argentina: Reconstrucción tectónica y paleoambiental The neopaleozoic of the Sierra de Castaño (Andean Cordillera Frontal, San Juan, Argentina: Tectonic and paleoenviromental reconstruction

    Directory of Open Access Journals (Sweden)

    Pedro Busquets

    2013-01-01

    ón andina. El más antiguo tuvo lugar próximo al límite Carbonífero-Pérmico, o durante el Pérmico más temprano. El segundo evento de deformación ocurrió hacia fines del Pérmico temprano y se correlaciona con la Fase Tectónica San Rafael, la que señala el inicio del importante volcanismo permotriásico (Grupo Choiyoi extensamente desarrollado a lo largo de la región andina.This paper addresses the stratigraphic analysis of the Late Paleozoic sequence outcroping in the Sierra de Castaño area (Cordillera Frontal, San Juan Province, Argentina. In this region three major stratigraphic units have been recognized. The lower one corresponds to the Cerro Agua Negra Formation (Late Carboniferous-Early Permian? composed of sandstones and mudstones, mainly deposited in shallow marine environments. The San Ignacio Formation (Early Permian covers unconformably the Cerro Agua Negra Formation and it is formed by conglomerates, breccias, sandstones, mudstones, stromatolitic limestones, volcanic and pyroclastic rocks. Three facies associations were recognized in the San Ignacio Formation. The lower (AFa is composed of breccias, conglomerates and lithic sandstones which were very probably deposited in alluvial and fluvial (braided systems that filled the irregular topography carved into the Cerro Agua Negra Formation. The facies association AFb, formed by conglomerates, sandstones and mudstones, characteristically develops metric-scale finning-upward cycles probably formed in high-sinuosity fluvial systems. Regarding the facies association AFc comprises stromatolitic limestones, mudstones, volcanics and pyroclastic rocks which are interpreted as deposited in shallow water bodies under recurrent volcanic activity. The San Ignacio Formation allows characterizing the transition from the prevolcanic sequences belonging to the Cerro Agua Negra Formation to the large volcanic activity represented in the Choiyoi Group (Middle Permian-Early Triassic. Moreover the analyzed sequence

  20. San Isidoro Schools in Padul, Granada, Spain

    Science.gov (United States)

    Lafuente-Bolívar, Francisco Javier; Santiago Zaragoza, Juan Manuel; Fernández-Adarve, Gabriel; María Cruz-Valdivieso, Ana

    2017-10-01

    The small and unique building of “Las Escuelas de San Isidoro”, erected in Padul at the beginning of the 20th century, is a clear example of the new architectural type of the innovative educational model created in Granada by Father Manjón. That model supposed a radical change for the methods of the Spanish teaching and it was the origin of the current educational system. Andrés Manjón y Manjón (1846-1923), priest, jurist and pedagogue, broke with traditional pedagogy and revolutionized the old-fashion model of education that was in vogue until that moment and universalized and socialized education. That pioneer model promoted an education based on aptitudes and faculties, using games and practice, addressed to all ages and social classes, in conjunction with nature. Outdoor education should be used wherever possible. In a historical context of profound social changes, this typology was the answer to the new educational needs using a “spearing” architectural language based on a constructive system that was both efficient and economic: Spanish Regionalism. It was a new style from the first third of the 20th century that recreated historical forms. It was far from the breakthrough modern movement that, at that time, it took place in central Europe. However, the model of the Manjonian School runs away from historicist models and remains in the simplicity of brick-faced walls or brick-wrapping walls and masonry drawers, with no more decorative concession that window lintels, jambs and sill jut out. The façades highlight made with simple semicircular arches and some glazed ceramics. Wooden rounded slabs supported on walls and simple wooden cover structures. The steel was barely used in metal structural slabs and brick, and even less on the roof. Architects like Francisco Jiménez Arévalo, Juan Montserrat Pons or Fernando Wilhelmi Manzano will be the architects of this type of architecture that has as a mark of identity the massive use of brick in load

  1. WILDFIRES IN THE LATE PALAEOZOIC AND MESOZOIC OF THE SOUTHERN ALPS THE LATE PERMIAN OF THE BLETTERBACH-BUTTERLOCH AREA (NORTHERN ITALY

    Directory of Open Access Journals (Sweden)

    DIETER UHL

    2012-07-01

    Full Text Available For the first time fossil macroscopic remains of charcoal as direct evidence of palaeo-wildfires from the Late Permian Gröden Formation of the Bletterbach-Butterloch area in Northern Italy is described. The charcoal consists of pycnoxylic wood and originates from gymnosperms, but a more specific affiliation is not possible due to the fragmentary nature of the material. On a global scale our knowledge about Late Permian fire-ecology is still rather scarce and this finding helps to fill one of the numerous geographical gaps in our current knowledge about Late Permian wildfires. 

  2. ECOLOGÍA DE CAIMAN CROCODILUS FUSCUS EN SAN ANDRÉS ISLA, COLOMBIA: UN ESTUDIO PRELIMINAR

    Directory of Open Access Journals (Sweden)

    FORERO-MEDINA GERMÁN

    2006-06-01

    Full Text Available La isla de San Andrés, en el Caribe colombiano, es una reserva de la biosfera yuna región de gran importancia biológica y cultural. Su fauna y su flora cuentan,sin embargo, con algunas especies consideradas como introducciones recientes yvoluntarias, que no han sido estudiadas y cuyos efectos deben ser evaluados conprontitud. Las babillas, Caiman crocodilus fuscus (Cope 1868, fueron introducidasa la isla en los años setenta y no se había realizado ningún trabajo previo sobre suecología en la región. En este trabajo se ubicaron las diferentes localidades dondeC. c. fuscus está presente durante la época seca en San Andrés, se estimaron losíndices de abundancia por localidad por medio de censos nocturnos, y se realizó unestudio de su dieta usando la metodología de extracción de contenidos estomacales.También se observó la relación de la comunidad isleña con la especie. El estudiose realizó durante los meses de marzo a junio del 2002, en la temporada seca.La especie fue encontrada en cuatro lagunas de agua dulce permanentes, conabundancias locales de 8, 17, 34 y 22 individuos, y no fue encontrado ninguno en losmanglares. Se capturaron veinte individuos y sus contenidos estomacales mostraronque consumen coleópteros, ortópteros, otros insectos, miriápodos, cangrejos, pecesy aves. El elemento que apareció con mayor frecuencia fue el coleóptero del géneroHydrophilus. Las babillas son utilizadas por la comunidad con fines turísticos y nose observó una explotación o extracción de animales.

  3. Aspect of the Characters from The Counterfeiters of André Gide

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    Hülya Kol

    2017-07-01

    Full Text Available As a pastry chef, the writer André Gide kneads his dough differently with the intention of putting an end to imitation in the world of the novel. He has the courage to treat the subject of the novel on the contrary to his contemporaries. He succeeds by introducing the reader into the novel. The reader finds fantastic stories and interesting characters in The Counterfeiters. Themes such as the hypocrisy and falsity of these characters are a reflection of the title that evokes them. Gide transmits this problematic period to the reader with surprising skill. The contrast in the words and behaviors of people are the evil traces of war.

  4. Tecnologias digitais: reflexões sobre usos e excessos ilustradas pelos quadrinhos de Andre Dahmer

    Directory of Open Access Journals (Sweden)

    Janaina Cabello

    2015-12-01

    Full Text Available This paper proposes some reflections about possible crossings/impacts on subjective processes from the appropriation of digital technologies in the twenty-first century and how their uses and (alleged excesses have impacted on the subjective constitutions facing other ways humans can show/look/feel/teach, that constitutes the established relationships in the network society. From a historical and cultural perspective, we discuss about the appropriation of digital technologies and the constitutions of subjectivity (individual and in a wider social context, with the backdrop of the illustrations of the Brazilian cartoonist Andre Dahmer, who, through social networks, discloses his work, which provokes and invites us to think about how we relate and therefore, we show and look at ourselves, feel, teach and learn in new subjective configurations with are crossed, constituted and reconstituted by the appropriation of technologies in the contemporary scene.

  5. New Trends in Approximation Theory : in Memory of André Boivin

    CERN Document Server

    Manolaki, Myrto; Gauthier, Paul

    2018-01-01

    The international conference entitled "New Trends in Approximation Theory" was held at the Fields Institute, in Toronto, from July 25 until July 29, 2016. The conference was fondly dedicated to the memory of our unique friend and colleague, André Boivin, who gave tireless service in Canada until his very last moment of his life in October 2014. The impact of his warm personality and his fine work on Complex Approximation Theory was reflected by the mathematical excellence and the wide research range of the 37 participants. In total there were 27 talks, delivered by well-established mathematicians and young researchers. In particular, 19 invited lectures were delivered by leading experts of the field, from 8 different countries. The wide variety of presentations composed a mosaic of aspects of approximation theory, highlighting interesting connections with important contemporary areas of Analysis. Primary topics discussed include application of approximation theory (isoperimetric inequalities, construction of...

  6. André Gide au miroir de la critique : "Corydon" entre œuvre et manifeste

    OpenAIRE

    Abdallah El Sokati , Chahira

    2011-01-01

    Corydon est un essai dans lequel André Gide soutient une nouvelle théorie de l'amour"pédérastique normal". Il y défend sa position tout en esquissant son identité, et en s'efforçantde faire reconnaître celle-ci à travers son oeuvre. Il répond ainsi à l'inquiétude de toute sagénération, ou au moins d'une élite de cette génération. Gide le dit : Corydon est un livre parlequel il veut " gêner ".La thèse suit les transformations de la réception de Corydon depuis sa publication et étudie lesdiffér...

  7. A propósito de don Andrés Bello

    Directory of Open Access Journals (Sweden)

    Carlos Restrepo Canal

    1965-09-01

    Full Text Available Al meditar en estos días sobre el insigne personaje de quien se conmemora el centenario de su fallecimiento -esto es de don Andrés Bello- al analizar su personalidad, estudiada y elogiada por tan autorizados y eruditos escritor es colombianos y extranjeros, al abrir de nuevo los muchos libros que contien en el variado conjunto de sus obras, se llega al convencimiento de que fue Bello como uno de aquellos grandes y brillantes varones del Renacimiento cuyas amplias facultades les hacían aptos para llegar al conocimiento de múltiples y variadas ramas del saber humano y para profundizar en ellas hasta llegar a constituirse en maestros y guías de las generaciones de su tiempo y de las que les sucedieron.

  8. Bioseguridad y armas biológicas:\tLa amenaza de Andrómeda (1971

    Directory of Open Access Journals (Sweden)

    Manuel SÁNCHEZ

    2016-11-01

    Full Text Available La amenaza de Andrómeda es la adaptación cinematográfica de la obra homónima escrita por Michael Crichton. Puede considerarse como la película más “microbiológica” del Séptimo Arte. Dirigida por Robert Wise, este tecno-thriller describe los esfuerzos de un equipo de científicos para caracterizar y contener a un microorganismo patógeno extraterrestre. A pesar de haber sido realizada hace 40 años, se tratan temas de plena actualidad como es el de las armas biológicas, las medidas de aislamiento y protección, la automatización en los procedimientos sanitarios y la toma de decisiones ante una situación grave e inesperada.

  9. The interior capture of life. Le Corbusier and André Malraux

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    Ana Sofía Pereira da Silva

    2016-05-01

    Writings from both authors and architectural projects from Le Corbusier –  Mundial Museum, Mundaneum and Museum of Unlimited Growth- will be observed in order to map the existent affinities between the two authors. However, life’s pragmatic circumstances often oppose what uses to be in accordance. André Malraux’s classification of the Villa Savoye, while he was  Minister of the Cultural Affairs, aimed to save one of Le Corbusier’s  masterpieces. Nevertheless, this action banned the architect the possibility to transform the Villa Savoye into a new program (in a first approach and, finally, excluded him the possibility of authorship of the rehabilitation project, which was subsequently entrusted to an architect working in the National Monuments bureau. This suspected moment of friction between the two authors shall be motive of observation.

  10. Denissen (Frans), André Baillon. Le gigolo d’Irma Idéal

    OpenAIRE

    Gnocchi, Maria Chiara

    2012-01-01

    Un titre aux résonances insolites vient chatouiller la règle sobre des Archives du Futur, la collection publiée sous la responsabilité des Archives et Musée de la Littérature de Bruxelles. André Baillon. Le gigolo d’Irma Idéal : un titre qui convient bien à une biographie que l’on a déjà — à juste titre — qualifiée d’extra-ordinaire (F. Ghysen, Le Carnet et les Instants, novembre 1998). Extra-ordinaire est d’ailleurs, avant tout, le protagoniste du volume : Baillon le grand écrivain, Baillon ...

  11. Edouard Andre (1840-1911, Jardinero-Naturalista y sus viajes por Colombia y el Ecuador

    Directory of Open Access Journals (Sweden)

    Chardon Carlos E.

    1947-06-01

    Full Text Available En la literatura botánica de Colombia y el Ecuador figura ocasionalmente con tono de notable indiferencia el nombre de EDOUARD ANDRÉ, célebre jardinero-naturalista francés, que visitó estos dos países allá por los años de 1875-1876. Por esta razón, los datos biográficos que se incluyen a continuación pueden ser de interés. Los debo principalmente a la exquisita gentileza de MADAME DUPRAT, bibliotecaria del Museo Nacional de Historia Natural, de París, quien recientemente me ha suministrado copia de los datos biográficos de ANDRE, publicados en la Revue horticote (numero del 1o de noviembre de 1911, agotado.

  12. Marketing San Juan Basin gas

    International Nuclear Information System (INIS)

    Posner, D.M.

    1988-01-01

    Marketing natural gas produced in the San Juan Basin of New Mexico and Colorado principally involves four gas pipeline companies with significant facilities in the basin. The system capacity, transportation rates, regulatory status, and market access of each of these companies is evaluated. Because of excess gas supplies available to these pipeline companies, producers can expect improved take levels and prices by selling gas directly to end users and utilities as opposed to selling gas to the pipelines for system supply. The complexities of transporting gas today suggest that the services of an independent gas marketing company may be beneficial to smaller producers with gas supplies in the San Juan Basin

  13. Update: San Andreas Fault experiment

    Science.gov (United States)

    Christodoulidis, D. C.; Smith, D. E.

    1984-01-01

    Satellite laser ranging techniques are used to monitor the broad motion of the tectonic plates comprising the San Andreas Fault System. The San Andreas Fault Experiment, (SAFE), has progressed through the upgrades made to laser system hardware and an improvement in the modeling capabilities of the spaceborne laser targets. Of special note is the launch of the Laser Geodynamic Satellite, LAGEOS spacecraft, NASA's only completely dedicated laser satellite in 1976. The results of plate motion projected into this 896 km measured line over the past eleven years are summarized and intercompared.

  14. Pore system characteristics of the Permian transitional shale reservoir in the Lower Yangtze Region, China

    Directory of Open Access Journals (Sweden)

    Taotao Cao

    2016-10-01

    Full Text Available The Permian shale, a set of transitional shale reservoir, is considered to be an important shale gas exploration target in the Lower Yangtze region. Due to little research conducted on the pore system characteristic and its controlling factors of the shale gas reservoir, SEM, FE-SEM, low-pressure N2 adsorption, and mercury intrusion tests were carried out on the Permian shales from the outcrop and HC well in the southern Anhui. The results show that the Permian shales mainly consist of organic matter, quartz, illite, calcite, and pyrite, of which pyrite occurs as framboids coexisting with organic matter and the organic matter is distributed in shales in stripped, interstitial, thin film and shell shapes. The basic pore types are inorganic mineral pore (intercrystalline pore, intergranular edge pore, intergranular pore, and interlayer pore in clay minerals and the organic pore and microfracture, of which organic pore and microfracture are the dominating pore types. In shale, organic pores are not developed at all in some organic grains but are well developed in others, which may be related to the types of and maceral compositions of kerogen. Under tectonic stress, shale rocks could develop mylonitization phenomenon exhibiting organic grains well blend with clay minerals, and produce a mass of microfractures and nanopores between organic matter grains and clay minerals. Mercury intrusion tests show that the shale is mainly composed of micropore and transition pore with high porosity, good pore connectivity and high efficiency of mercury withdraw, while the shale that mainly dominated by mesopore and macropore has a low porosity, poor pore connectivity, and low efficiency of the mercury withdraw. The volume percentage of mesopore and marcopore is increasing with the increase of quartz, and that of micropore and transition pore has a decreased tendency along with the increase of soluble organic matter (S1. Organic matter is the main contributor to

  15. Latest Permian carbonate carbon isotope variability traces heterogeneous organic carbon accumulation and authigenic carbonate formation

    Science.gov (United States)

    Schobben, Martin; van de Velde, Sebastiaan; Gliwa, Jana; Leda, Lucyna; Korn, Dieter; Struck, Ulrich; Vinzenz Ullmann, Clemens; Hairapetian, Vachik; Ghaderi, Abbas; Korte, Christoph; Newton, Robert J.; Poulton, Simon W.; Wignall, Paul B.

    2017-11-01

    Bulk-carbonate carbon isotope ratios are a widely applied proxy for investigating the ancient biogeochemical carbon cycle. Temporal carbon isotope trends serve as a prime stratigraphic tool, with the inherent assumption that bulk micritic carbonate rock is a faithful geochemical recorder of the isotopic composition of seawater dissolved inorganic carbon. However, bulk-carbonate rock is also prone to incorporate diagenetic signals. The aim of the present study is to disentangle primary trends from diagenetic signals in carbon isotope records which traverse the Permian-Triassic boundary in the marine carbonate-bearing sequences of Iran and South China. By pooling newly produced and published carbon isotope data, we confirm that a global first-order trend towards depleted values exists. However, a large amount of scatter is superimposed on this geochemical record. In addition, we observe a temporal trend in the amplitude of this residual δ13C variability, which is reproducible for the two studied regions. We suggest that (sub-)sea-floor microbial communities and their control on calcite nucleation and ambient porewater dissolved inorganic carbon δ13C pose a viable mechanism to induce bulk-rock δ13C variability. Numerical model calculations highlight that early diagenetic carbonate rock stabilization and linked carbon isotope alteration can be controlled by organic matter supply and subsequent microbial remineralization. A major biotic decline among Late Permian bottom-dwelling organisms facilitated a spatial increase in heterogeneous organic carbon accumulation. Combined with low marine sulfate, this resulted in varying degrees of carbon isotope overprinting. A simulated time series suggests that a 50 % increase in the spatial scatter of organic carbon relative to the average, in addition to an imposed increase in the likelihood of sampling cements formed by microbial calcite nucleation to 1 out of 10 samples, is sufficient to induce the observed signal of carbon

  16. Lipid Biomarker Records Across the Permian-Triassic Boundary from Kap Stosch, Greenland

    Science.gov (United States)

    Hays, L. E.; Love, G. D.; Foster, C. B.; Grice, K.; Summons, R. E.

    2006-12-01

    The end-Permian extinction was the most severe in the past 500 million years of the Earth's history and evidence that an oceanic anoxic event (OAE) occurred contemporaneously has been presented previously [1,2]. OAEs have, therefore, been proposed as responsible for the mass mortality, and if the anoxic ocean was also euxinic, the release of hydrogen sulfide during upwelling and/or transgression provides an extinction agent in the ocean as well as on land. Chlorobiaceae, as indicators of photic zone euxinia (PZE), utilize hydrogen sulfide as an electron donor for anoxygenic photosynthesis. The detection of isorenieratane and a series of short-chain monoaromatic aryl isoprenoids, biomarkers for Chlorobiaceae, in sediments indicates the presence of hydrogen sulfide in the photic zone of the water column during sediment deposition. The Kap Stosch area in Eastern Greenland was identified as a Permian-Triassic boundary (PTB) outcrop of homogeneous shale, silty shale, and siltstone facies [3]. Another late Permian section in Eastern Greenland, the Ravnefjeld Formation, has framboidal pyrites indicative of sulfidic deep water [4]. A sample suite from the Kap Stosch region was studied using standard organic geochemistry methods including stable isotopic analyses of organic carbon, Rock-Eval pyrolysis, and biomarker hydrocarbon analysis. Aryl isoprenoids, including isorenieratane, were present in all samples studied and the concentrations were observed to fluctuate in tandem with TOC, similar to other Mesozoic OAEs. The molecular ratios of pristane/phytane and hopanes/steranes as well as the 2-methyl-hopane index (2-MHI) fluctuated dramatically through this section as they do at the type section at Meishan and in the Perth Basin [5]. The 2-MHI shows an inverse pattern to the total aryl isoprenoids, perhaps indicative of instability in the form of primary productivity in the water column during euxinic episodes. This can result in nitrogen limitation and a competitive

  17. Vegetation - San Felipe Valley [ds172

    Data.gov (United States)

    California Natural Resource Agency — This Vegetation Map of the San Felipe Valley Wildlife Area in San Diego County, California is based on vegetation samples collected in the field in 2002 and 2005 and...

  18. San Francisco Bay Water Quality Improvement Fund

    Science.gov (United States)

    EPAs grant program to protect and restore San Francisco Bay. The San Francisco Bay Water Quality Improvement Fund (SFBWQIF) has invested in 58 projects along with 70 partners contributing to restore wetlands, water quality, and reduce polluted runoff.,

  19. The San Bernabe power substation; La subestacion San Bernabe

    Energy Technology Data Exchange (ETDEWEB)

    Chavez Sanudo, Andres D. [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    The first planning studies that gave rise to the San Bernabe substation go back to year 1985. The main circumstance that supports this decision is the gradual restriction for electric power generation that has been suffering the Miguel Aleman Hydro System, until its complete disappearance, to give priority to the potable water supply through the Cutzamala pumping system, that feeds in an important way Mexico City and the State of Mexico. In this document the author describes the construction project of the San Bernabe Substation; mention is made of the technological experiences obtained during the construction and its geographical location is shown, as well as the one line diagram of the same [Espanol] Los primeros estudios de planeacion que dieron origen a la subestacion San Bernabe se remontan al ano de 1985. La circunstancia principal que soporta esta decision es la restriccion paulatina para generar energia que ha venido experimentando el Sistema Hidroelectrico Miguel Aleman, hasta su desaparicion total, para dar prioridad al suministro de agua potable por medio del sistema de bombeo Cutzamala, que alimenta en forma importante a la Ciudad de Mexico y al Estado de Mexico. En este documento el autor describe el proyecto de construccion de la subestacion San Bernabe; se mencionan las experiencias tecnologicas obtenidas durante su construccion y se ilustra su ubicacion geografica, asi como un diagrama unifilar de la misma

  20. 33 CFR 165.754 - Safety Zone: San Juan Harbor, San Juan, PR.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone: San Juan Harbor, San Juan, PR. 165.754 Section 165.754 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Zone: San Juan Harbor, San Juan, PR. (a) Regulated area. A moving safety zone is established in the...

  1. 76 FR 45693 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

    Science.gov (United States)

    2011-08-01

    ...-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary... San Diego Bay in support of the San Diego POPS Fireworks. This safety zone is necessary to provide for... of the waterway during scheduled fireworks events. Persons and vessels will be prohibited from...

  2. Ehitatud võrdsus. Tüüpprojekteerimine 20. sajandi elamuehituses : 23. september - 29. oktoober, Eesti Arhitektuurimuuseum, Rotermanni soolaladu / Andres Kurg

    Index Scriptorium Estoniae

    Kurg, Andres, 1975-

    2000-01-01

    Näitus keskendub linnakorteritele ja -elamutele Eestis, alates 1920. aastate riikliku ehituslaenuga ehitatud korteritest, lõpetades nõukogude perioodi industriaalse massehitusega. Kuraator Andres Kurg, kujundaja arhitektuuribüroo Kolm Pluss Üks

  3. Pre-Alleghenian (Pennsylvanian-Permian) hydrocarbon emplacement along Ordovician Knox unconformity, eastern Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Haynes, F.M.; Kesler, S.E.

    1989-03-01

    Cores taken during exploration for Mississippi Valley-type lead and zinc ores in the Mascot-Jefferson City zinc district of eastern Tennessee commonly contain hydrocarbon residues in carbonate rocks of the Knox Group immediately below the Lower Ordovician Knox unconformity. The location and number of these residue-bearing strata reveal information about the Paleozoic history of hydrocarbon emplacement in the region. Contour maps, generated from nearly 800 holes covering more than 20 km/sup 2/, indicate that zones with elevated organic content in the uppermost 30 m of the Lower Ordovician Mascot Dolomite show a strong spatial correlation with Middle Ordovician paleotopographic highs. These same zones show no spatial association with present-day structural highs, which were formed during Pennsylvanian-Permian Alleghenian tectonism. This suggests that the physical entrapment of hydrocarbons migrating through the upper permeable units of the Mascot must have occurred prior to the principal tectonism of the Alleghenian orogeny. 7 figures, 1 table.

  4. Rare earths from uranium mineralization occurrences in the Permian of the Gemericum, the Western Carpathians

    International Nuclear Information System (INIS)

    Rojkovic, I.; Medved, J.; Walzel, E.; Posta, S.; Sulovsky, P.

    1989-01-01

    Uranium mineralization in the Permian of the Gemericium is accompanied by apatite, monazite and xenotime. The study of rare earth elements distribution is based on the results of instrumental neutron activation analysis and optical emission spectroscopy analysis of rocks and energy-dispersive X-ray microanalyses of minerals. The main light rare earth elements bearing mineral is monazite; for heavy rare earth elements it is xenotime. The rocks accompanying uranium mineralization have increased rare earth elements contents. The mobilization and concentration of uranium mineralization took place during the Alpine metallogenic processes. These processes were also associated with rare earth elements mobilization is which total and selective enrichment in light rare earth elements and heavy rare earth elements was observed. (author). 12 figs., 6 tabs., 5 refs

  5. Origin and distribution of tonsteins in late permian coal seams of Southwestern China

    Science.gov (United States)

    Zhou, Yinzhu; Ren, Y.-L.; Bohor, B.F.

    1982-01-01

    We have surveyed the areal and stratigraphic distribution of tonsteins in Late Permian coalfields of southwestern China over an area of several hundred thousand square kilometers. We studied the relationship between tonstein distribution and sedimentary environment. Based on mineralogical and petrographic data, we have concluded that these tonsteins originated as air-fall volcanic ashes. Following accumulation in the peat swamps, in situ alteration of the vitric and lithic components took place under acidic conditions, leading to the formation of kaolinite. Based on petrologic, mineralogic, and chemical analytical data, we have determined that the application of mineralogic and geochemical criteria for tonsteins may be useful in correlating coal beds, predicting coal qualities and reconstructing related sedimentary paleoenvironmental conditions. ?? 1982.

  6. Restoration of marine ecosystems following the end-Permian mass extinction: pattern and dynamics

    Science.gov (United States)

    Chen, Z.

    2013-12-01

    Life came closest to complete annihilation during the end-Permian mass extinction (EPME). Pattern and cause of this great dying have long been disputed. Similarly, there is also some debate on the recovery rate and pattern of marine organisms in the aftermath of the EPME. Some clades recovered rapidly, within the first 1-3 Myr of the Triassic. For instance, foraminiferal recovery began 1 Myr into the Triassic and was not much affected by Early Triassic crises. Further, some earliest Triassic body and trace fossil assemblages are also more diverse than predicted. Others, ie. Brachiopods, corals etc., however, did not rebound until the Middle Triassic. In addition, although ammonoids recovered fast, reaching a higher diversity by the Smithian than in the Late Permian, much of this Early Triassic radiation was within a single group, the Ceratitina, and their morphological disparity did not expand until the end-Spathian. Here, I like to broaden the modern ecologic network model to explore the complete trophic structure of fossilized ecosystems during the Permian-Triassic transition as a means of assessing the recovery. During the Late Permian and Early Triassic, primary producers, forming the lowest trophic level, were microbes. The middle part of the food web comprises primary and meso-consumer trophic levels, the former dominated by microorganisms such as foraminifers, the latter by opportunistic communities (i.e. disaster taxa), benthic shelly communities, and reef-builders. They were often consumed by invertebrate and vertebrate predators, the top trophic level. Fossil record from South China shows that the post-extinction ecosystems were degraded to a low level and typified by primary producers or opportunistic consumers, which are represented by widespread microbialites or high-abundance, low-diversity communities. Except for some opportunists, primary consumers, namely foraminifers, rebounded in Smithian. Trace-makers recovered in Spathian, which also saw

  7. Lithofacies palaeogeography of the Late Permian Wujiaping Age in the Middle and Upper Yangtze Region, China

    Directory of Open Access Journals (Sweden)

    Jin-Xiong Luo

    2014-10-01

    Full Text Available The lithofacies palaeogeography of the Late Permian Wujiaping Age in Middle and Upper Yangtze Region was studied based on petrography and the “single factor analysis and multifactor comprehensive mapping” method. The Upper Permian Wujiaping Stage in the Middle and Upper Yangtze Region is mainly composed of carbonate rocks and clastic rocks, with lesser amounts of siliceous rocks, pyroclastic rocks, volcanic rocks and coal. The rocks can be divided into three types, including clastic rock, clastic rock–limestone and limestone–siliceous rock, and four fundamental ecological types and four fossil assemblages are recognized in the Wujiaping Stage. Based on a petrological and palaeoecological study, six single factors were selected, namely, thickness (m, content (% of marine rocks, content (% of shallow water carbonate rocks, content (% of biograins with limemud, content (% of thin-bedded siliceous rocks and content (% of deep water sedimentary rocks. Six single factors maps of the Wujiaping Stage and one lithofacies palaeogeography map of the Wujiaping Age were composed. Palaeogeographic units from west to east include an eroded area, an alluvial plain, a clastic rock platform, a carbonate rock platform where biocrowds developed, a slope and a basin. In addition, a clastic rock platform exists in the southeast of the study area. Hydrocarbon source rock and reservoir conditions were preliminarily analyzed based on lithofacies palaeogeography. Sedimentary environments have obvious controls over the development of the resource rocks. With regard to the abundance of organic matter, the hydrocarbon potential of the coastal swamp environment is the best, followed by the basin environment and the carbonate rock platform. The gas reservoir types of the Wujiaping Stage can be classified as conventional and unconventional gas reservoirs, like coal bed gas and shale gas; all of them have well exploration prospects.

  8. Permian Triassic palynofloral transition in Chintalapudi area, Godavari Graben, Andhra Pradesh, India

    Science.gov (United States)

    Jha, Neerja; Chary, M. Basava; Aggarwal, Neha

    2012-10-01

    The entire 606 m-thick sedimentary sequence in borecore MCP-7 from Chintalapudi area, Chintalapudi sub-basin has been lithologically designated as Kamthi Formation. However, the palynological investigation revealed five distinct palynoassemblages, which essentially fall under two groups, one group (Palynoassemblage-I, II and III) having dominance of striate disaccates along with presence of some stratigraphically significant taxa, belongs to Late Permian (Raniganj) palynoflora, while the other group (Palynoassemblages IV and V) shows sharp decline in percentage of characteristic taxa of first group, i.e., striate disaccates, and consequent rise or dominance of taeniate and cingulate cavate spores, belongs to Early Triassic (Panchet) palynoflora. Palynoassemblage-I, II and III (Group I) are characterized by dominance of striate disaccates chiefly, Striatopodocarpites spp. and Faunipollenites spp. along with presence of rare but stratigraphically significant taxa, viz., Gondisporites raniganjensis, Falcisporites nuthaliensis, Klausipollenites schaubergeri, Chordasporites sp., Striomonosaccites, ovatus, Crescentipollenites multistriatus, Verticipollenites debiles, Strotersporites crassiletus, Guttulapollenites hannonicus, G. gondwanensis, Hamiapollenites insolitus, Corisaccites alutus, Lunatisporites ovatus, Weylandites spp. and Vitreisporites pallidus. Palynoassemblage-I is distinguished by significant presence of Densipollenites spp. while Palynoassemblage-II shows significant presence of Crescentipollenites spp. and Palynoassemblage-III differs from the above two assemblages in having significant presence of Guttulapollenites hannonicus. Palynoassemblage-IV (Group II) is characterized by high percentage of taeniate disaccates chiefly Lunatisporites spp., while Palynoassemblage-V (Group II) is characterized by cingulate-cavate trilete spores chiefly, Lundbladispora spp. and Densoisporites spp. Striate disaccates show a sharp decline in these two assemblages. In

  9. Ca and Sr isotope records support ocean acidification during end-Permian mass extinction

    Science.gov (United States)

    Wang, J.; Jacobson, A. D.; Zhang, H.; Ramezani, J.; Sageman, B. B.; Hurtgen, M.; Bowring, S. A.; Shen, S.

    2017-12-01

    The end-Permian mass extinction represents the most devastating loss of biodiversity during the Phanerozoic. A negative carbon isotope (δ13C) excursion that accompanies the event suggests a significant perturbation to the global carbon cycle, likely induced by CO2 emissions during eruption of the Siberian Traps large igneous province. The carbon cycle is linked with the Ca and Sr cycles through chemical weathering and carbonate precipitation. Therefore, analyses of Ca (δ44/40Ca), radiogenic Sr (87Sr/86Sr), and stable Sr (δ88/86Sr) isotope abundance variations in marine carbonate rocks spanning the Permian-Triassic Boundary (PTB) can reveal key information about biogeochemical changes that occurred during this time. We report δ44/40Ca, 87Sr/86Sr, and δ88/86Sr records analyzed by TIMS for the Meishan and Dajiang sections in China. δ44/40Ca values exhibit similar patterns in both sections. The values remain unchanged across the extinction event layer (EXT) and then decrease by 0.20‰ before increasing by 0.20‰ to 0.40‰ around the PTB. In the Meishan section, 87Sr/86Sr ratios increase after the EXT and return to pre-excursion levels by the PTB. Simultaneously, δ88/86Sr values decrease by 0.12‰ across the EXT and increase by 0.08‰ by the PTB. The patterns of our data support the hypothesis that elevated atmospheric CO2 levels enhanced chemical weathering inputs and might have caused transient ocean acidification, with an "alkalinity overshoot" and increased carbonate deposition occurring after the extinction. Additional measurements and model calculations are underway to help refine and improve these preliminary interpretations.

  10. Geochemical Identification of Windblown Dust Deposits in the Upper Permian Brushy Canyon Formation, Southern New Mexico

    Science.gov (United States)

    Tice, M. M.; Motanated, K.; Weiss, R.

    2009-12-01

    Windblown dust is a potentially important but difficult-to-quantify source of siliciclastics for sedimentary basins worldwide. Positively identifying windblown deposits requires distinguishing them from other low density suspension transport deposits. For instance, laminated very fine grained sandstones and siltstones of the Upper Permian Brushy Canyon Formation have been variously interpreted as 1) the deposits of slow-moving, low-density turbidity currents, 2) distal overbank deposits of turbidity currents, 3) the deposits of turbulent suspensions transported across a pycnocline (interflows), and 4) windblown dust. This facies forms the bulk of Brushy Canyon Formation slope deposits, so understanding its origin is critical to understanding the evolution of the basin as a whole. We use a geochemical mapping technique (x-ray fluorescence microscopy) to show that these rocks are up to two times enriched in very fine sand sized zircon and rutile grains relative to Bouma A divisions of interbedded turbidites, suggesting substantial turbulence during transport. However, in contrast with the A divisions, the laminated sandstones and siltstones never show evidence of scour or amalgamation, implying that flow turbulence did not interact with underlying beds. Moreover, proximal loess deposits are often characterized by elevated Zr/Al2O3. These observations are most consistent with windblown interpretations for Brushy Canyon Formation slope sediments, and suggest that evolution of this early deepwater slope system was controlled largely by short-distance aeolian transport of very fine sand and silt from the coast. Heavy mineral incorporation into Brushy Canyon Formation slope deposits as reflected in laminae-scale bulk Zr and Ti abundances may preserve a long-term record of local wind intensity during the Upper Permian.

  11. Eopolydiexodina (Middle Permian giant fusulinids) from Afghanistan: Biometry, morphometry, paleobiogeography, and end-Guadalupian events

    Science.gov (United States)

    Colpaert, Clémentine; Monnet, Claude; Vachard, Daniel

    2015-04-01

    The most spectacular macroevolutionary trend presented by the genera of schwagerinoid fusulinids, during the Pennsylvanian -Permian, is an enormous increase in size, which culminated in the Middle Permian with Eopolydiexodina. However, this potential major biogeographic marker, during the Kubergandian-early Midian time interval, is as yet hampered by its poor taxonomic characterization. Hence, Eopolydiexodina is revised here using biometric and morphometric methods applied to large collections from Afghanistan and selected taxa in the literature. These multivariate analyses consist of classical linear test parameters, as well as new area parameters acquired by computer image analysis. The Afghan species are re-defined, and some other species, occasionally described as Cimmerian, are re-discussed. These methods, combined with classical morphological analyses, also permit to conclude that the largest Eopolydiexodina of Afghanistan are microspheric specimens (probably agamonts) of E. afghanensis and E. bithynica. Two megalospheric groups of individuals (probably gamonts and schizonts) are represented in both species, as well as in E. persica and E. darvasica. Due to this presence of gamonts, agamonts and schizonts in several species, Eopolydiexodina is probably the oldest identified trimorphic genus among the large benthic foraminifers. Biostratigraphically, Eopolydiexodina appears restricted to the late Kubergandian to early Midian. The associated Afghan fusulinids (Dunbarula, Kahlerina, Afghanella, Yangchienia, Sumatrina, and Codonofusiella) allow proposing an accurate biostratigraphy of the Eopolydiexodina species in the Murgabian-Midian boundary interval. Paleobiogeographically, Eopolydiexodina was essentially located in the Laurentian and Perigondwanan borders of the Tethys. The possible presence of Eopolydiexodina in the Cimmerian Continent and in some regions of China has never been irrefutably demonstrated. This paleobiological revision of Eopolydiexodina and

  12. ASTER Flyby of San Francisco

    Science.gov (United States)

    2002-01-01

    The Advanced Spaceborne Thermal Emission and Reflection radiometer, ASTER, is an international project: the instrument was supplied by Japan's Ministry of International Trade and Industry. A joint US/Japan science team developed algorithms for science data products, and is validating instrument performance. With its 14 spectral bands, extremely high spatial resolution, and 15 meter along-track stereo capability, ASTER is the zoom lens of the Terra satellite. The primary mission goals are to characterize the Earth's surface; and to monitor dynamic events and processes that influence habitability at human scales. ASTER's monitoring and mapping capabilities are illustrated by this series of images of the San Francisco area. The visible and near infrared image reveals suspended sediment in the bays, vegetation health, and details of the urban environment. Flying over San Francisco (3.2MB) (high-res (18.3MB)), we see the downtown, and shadows of the large buildings. Past the Golden Gate Bridge and Alcatraz Island, we cross San Pablo Bay and enter Suisun Bay. Turning south, we fly over the Berkeley and Oakland Hills. Large salt evaporation ponds come into view at the south end of San Francisco Bay. We turn northward, and approach San Francisco Airport. Rather than landing and ending our flight, we see this is as only the beginning of a 6 year mission to better understand the habitability of the world on which we live. For more information: ASTER images through Visible Earth ASTER Web Site Image courtesy of MITI, ERSDAC, JAROS, and the U.S./Japan ASTER Science Team

  13. 78 FR 19103 - Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan, PR

    Science.gov (United States)

    2013-03-29

    ...-AA00 Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan... temporary moving safety zone on the waters of Bahia de San Juan during the transit of the Spanish Navy... Channel entrance, and to protect the high ranking officials on board the Spanish Navy School Ship San...

  14. Hotell 'Bernhard' Otepääl. Otepää aedlinn, Kolga tee 22a / Andres Lunge

    Index Scriptorium Estoniae

    Lunge, Andres

    1998-01-01

    Otepää aedlinnas asuva U. Tiirmaa poolt kuuekümnendatel projekteeritud Tartu Katseremonditehase puhkebaasi rekonstrueerimine. Kavandati uus peasissepääs, täiendav tubadekorrus, restoran, vastuvõtufuajee jm. ning juurdeehitusena osaliselt maaalune lisakorpus konverentsisaali jm. ruumidega. Tellija: AS Regel. Projekteerija: Tareke Projekt OÜ. Arhitekt Andres Lunge. Sisekujundaja Taisi Kadarik. Ehitus: AS Regel, 1996-1998. Projekt 1995, 1998, valmis 1998

  15. Permian depositional age of metaturbidites of the Duque de York Complex, southern Chile: U-Pb SHRIMP data and palynology

    International Nuclear Information System (INIS)

    Sepulveda, Fernando A; Palma-Heldt, Sylvia; Herve, Francisco; Fanning, Mark

    2010-01-01

    The Duque de York Complex (DYC) is part of the low grade metamorphic accretionary complexes of the pre-Andean Patagonian 'basement'. It is a sedimentary succession exposed along the western margin of southernmost South America. New U-Pb zircon ages and palynological data restrict the maximum depositional age of the DYC to the limit between the early Permian (Kungurian) and the middle Permian (Roadian). The palynological association recorded in the DYC, characterized mainly by Gymnospermopsida pollen, indicates a humid environment of forest with an under-growth of ferns. Regional paleogeographic correlations point out that an interpretation of DYC as an autochthonous terrane cannot be discarded, contrasting with previous hypotheses which suggest an allochthonous character for this complex

  16. Puentes de Saint-André-de-Cubzac y de Angers Francia

    Directory of Open Access Journals (Sweden)

    Mathivat, J.

    1978-02-01

    Full Text Available The development of the technique of prefabricated voussoir bridges during the past years has been made possible by the progress achieved in various fields which are developed here, namely: 1 the improvement of the joint between arch stones by the adoption of multiplenotch joints where the adhesive plays a less important part, 2 the increase ín the cross dimensions of the voussoirs as well as in their unit weight, which reduces the number of joints, as well as the diversification of the forms, which can lead to the elimination of the cross prestress, 3 the improvement of the methods of placing and of the design of the lifting rigs: mobile lifting equipement carried by the deck, launching girder. The study of these different factors is supplemented and illustrated by the presentation of two recent works: the freeway bridges of Saint-André-de-Cubzac and the bridge on the Loire near Angers.

    El desarrollo de la técnica de los puentes de dovelas prefabricadas ha experimentado un fuerte incremento, durante los últimos años, a causa de: 1 Mejoramiento de las juntas entre dovelas, por adopción de sistemas dotados de dentado múltiple, en cuyo caso el papel de la cola es menos primordial. 2 Aumento de las dimensiones transversales de las dovelas, así como de su peso unitario, lo cual reduce el número de juntas, así como la diversificación de las formas, con lo cual se puede conseguir la supresión del pretensado transversal. 3 Mejoras introducidas en los métodos de colocación y en el diseño de los aparatos de elevación: equipo móvil de elevación soportado por el propio tablero, viga de lanzamiento. El estudio de estos distintos factores se ha ilustrado con la presentación de dos obras recientemente ejecutadas, a saber: los puentes de autopista de Saint-André-de-Cubzac y el puente del Loira, cerca de Angers.

  17. Paleoecological and paleoenvironmental changes during the continental Middle-Late Permian transition at the SE Iberian Ranges, Spain

    Science.gov (United States)

    De la Horra, R.; Galán-Abellán, A. B.; López-Gómez, J.; Sheldon, N. D.; Barrenechea, J. F.; Luque, F. J.; Arche, A.; Benito, M. I.

    2012-08-01

    The Middle and Late Permian are characterized by a pair of mass-extinction events that are recorded in both marine and continental environments. Here, we present the first continental western peri-Tethyan record of an extinction event located in the Middle-Late interval. In the SE Iberian Ranges, Central Spain, the transition between the Lower and Middle subunits of the Middle Permian Alcotas Formation indicates a significant paleoclimatic change from arid and semiarid conditions towards more humid conditions. Coincident with the onset of humid conditions there were changes in the sedimentology, mineralogy, and geochemistry that indicate significant environmental changes including a shift in weathering intensity and a change of fluvial style from braided to meandering systems. Near the top of the Middle Subunit, a local biotic crisis is recorded by palynomorph assemblages. Following this crisis, there is a total absence of coal beds, plant remains, and microflora that defines a barren zone in the uppermost part of the Alcotas Formation which is recorded throughout the basin. The barren zone is accompanied by a shift back to braided stream systems, but not by a return to carbonate-bearing paleosols indicative of arid or semi-arid conditions. This combination of features is consistent with other Middle-Late continental basins related with mass extinctions, so the barren zone is interpreted as the extinction interval. The regional character of the extinction interval and its proximity with the Middle-Late Permian transition could be related with the global mid-Capitanian biotic turnover described in this period of time in other marine basins. However, the common difficulties of dating with precision non-marine rocks make this relationship difficult to probe in the Iberian Basin and in other Middle-Late Permian basins. Further work, including high resolution carbon-isotope analyses and complete studies of the magnetostratigraphy, should be desirable in order to obtain

  18. Lithostratigraphy, depositional environments and sedimentology of the Permian Vryheid Formation (Karoo Supergroup), Arnot North, Witbank Coalfield, South Africa

    OpenAIRE

    2009-01-01

    M.Sc. This work documents the lithostratigraphy and interpreted depositional environments of the Permian Vryheid Formation in the most northern proximal setting yet studied in the Witbank Coalfield. Data from 924 boreholes from two mining companies (Anglo Operations Ltd. and Xstrata Coal Ltd.) drilled over 50 years, covering an area of 910km2 revealed a 35m sequence of terrigenous clastic sedimentary rocks containing two coal seams. These seams are numbered No. 1 at the base and No. 2 at t...

  19. Identification of the Early Permian (Autunian) in the subsurface of the Ebro Basin, NE Spain, and its paleogeographic consequences

    OpenAIRE

    Arche, A.; Díez, J.B.; López-Gómez, José

    2007-01-01

    [EN] The Early Permian (Autunian) has not been identifi ed up to now in the subsurface of the Tertiary Ebro Basin because of the scarcity of oil well boreholes reaching the Variscan basement and the systematic attribution of a Carboniferous age, without any paleontological data, to the unmetamorfosed siliciclastic sediments found at the base of some of them, clearly above the Early Paleozoic basement. Grey and black shale samples recovered from cores preserved in the REPSOL-YPF archi...

  20. Delayed recovery of non-marine tetrapods after the end-Permian mass extinction tracks global carbon cycle

    OpenAIRE

    Irmis, Randall B.; Whiteside, Jessica H.

    2011-01-01

    During the end-Permian mass extinction, marine ecosystems suffered a major drop in diversity, which was maintained throughout the Early Triassic until delayed recovery during the Middle Triassic. This depressed diversity in the Early Triassic correlates with multiple major perturbations to the global carbon cycle, interpreted as either intrinsic ecosystem or external palaeoenvironmental effects. In contrast, the terrestrial record of extinction and recovery is less clear; the effects and magn...

  1. Multiple episodes of extensive marine anoxia linked to global warming and continental weathering following the latest Permian mass extinction.

    Science.gov (United States)

    Zhang, Feifei; Romaniello, Stephen J; Algeo, Thomas J; Lau, Kimberly V; Clapham, Matthew E; Richoz, Sylvain; Herrmann, Achim D; Smith, Harrison; Horacek, Micha; Anbar, Ariel D

    2018-04-01

    Explaining the ~5-million-year delay in marine biotic recovery following the latest Permian mass extinction, the largest biotic crisis of the Phanerozoic, is a fundamental challenge for both geological and biological sciences. Ocean redox perturbations may have played a critical role in this delayed recovery. However, the lack of quantitative constraints on the details of Early Triassic oceanic anoxia (for example, time, duration, and extent) leaves the links between oceanic conditions and the delayed biotic recovery ambiguous. We report high-resolution U-isotope (δ 238 U) data from carbonates of the uppermost Permian to lowermost Middle Triassic Zal section (Iran) to characterize the timing and global extent of ocean redox variation during the Early Triassic. Our δ 238 U record reveals multiple negative shifts during the Early Triassic. Isotope mass-balance modeling suggests that the global area of anoxic seafloor expanded substantially in the Early Triassic, peaking during the latest Permian to mid-Griesbachian, the late Griesbachian to mid-Dienerian, the Smithian-Spathian transition, and the Early/Middle Triassic transition. Comparisons of the U-, C-, and Sr-isotope records with a modeled seawater PO 4 3- concentration curve for the Early Triassic suggest that elevated marine productivity and enhanced oceanic stratification were likely the immediate causes of expanded oceanic anoxia. The patterns of redox variation documented by the U-isotope record show a good first-order correspondence to peaks in ammonoid extinctions during the Early Triassic. Our results indicate that multiple oscillations in oceanic anoxia modulated the recovery of marine ecosystems following the latest Permian mass extinction.

  2. Tectono-sedimentary evolution of the Permian-Triassic extension event in the Zagros basin (Iran): results from analogue modelling

    Science.gov (United States)

    Madani-kivi, M.; Zulauf, G.

    2015-12-01

    Since the 1970s, the largest oil and gas reservoirs have been discovered in the Permian-Early Triassic formationsin Saudi Arabia. Thus, this time period is important for the discovery of new oil reserves in Iran. The Arabian passivecontinental margin has undergone lithospheric extension during the Permian-Triassic, which led to the formation of theNeo-Tethys. The aim of this paper is to describe the development of the continental rift basin in the Zagros region basedon the tectono-sedimentological evolution. We have studied well-log data to specify the distribution of synrift depositsin the Zagros and have related this information to the modelling. Environmental changes indicated by various sedimentarysequences, from a siliciclastic basin to a carbonate platform setting, are described. The Cambrian Hormuz salt, whichoverlies the metamorphosed Precambrian basement, becomes effective as a basal detachment layer influencing the styleof overburden deformation during the Permian-Triassic extension event. We have investigated the formation of variousstructures linked to the presence or absence of the Hormuz layer by analogue modelling and relating these structures to theLate Palaeozoic sedimentation. Based on results of the analogue modelling, we argue that the basal detachment layer (Hormuzseries) has contributed to the various structural styles of the extensional basin development in the Fars domain and theLorestan domain.

  3. Permian-Triassic thermal anomaly of the active margin of South America as a result of plate kinematics reorganization

    Science.gov (United States)

    Riel, Nicolas; Jaillard, Etienne; Guillot, Stéphane; Martelat, Jean-Emmanuel; Braun, Jean

    2013-04-01

    From Permian to Triassic times, tectonic plate reorganization provoked Pangaea breakup, counterclockwise rotation of Gondwana, closing of the Paleo-Tethys Ocean and opening of the Neo-Tethys oceanic realm. Meanwhile, the switch from arc volcanism to widespread S-type magmatism along the western South American active margin around 275-265 Ma is symptomatic of the onset of a large-scale Permian-Triassic thermal anomaly (PTTA)affecting the whole margin. Here we report metamorphic and U-Pb geochronological results from the El Oro metamorphic complex in the forearc zone of southwestern Ecuador, which recorded the last step, at 230-225 Ma, of the PTTA. The change in the drift direction of Gondwana from north to east at ca. 270 Ma was related to plate reorganization and provoked the verticalization of the subducted Panthalassa slab. As the slab verticalized, strong heat advection produced a high heat flow beneath the active margin inducing the development of a huge thermal anomaly responsible for the PTTA, which lasted 30 Ma. This voluminous magmatic activity culminated at the Permian-Triassic boundary, and may have contributed to the degradation of life conditions on the Earth surface.

  4. Aridification across the Carboniferous-Permian transition in central equatorial Pangea: The Catalan Pyrenean succession (NE Iberian Peninsula)

    Science.gov (United States)

    Mujal, Eudald; Fortuny, Josep; Marmi, Josep; Dinarès-Turell, Jaume; Bolet, Arnau; Oms, Oriol

    2018-01-01

    The Carboniferous-Permian terrestrial successions record a global climatic shift from icehouse to hothouse conditions. Our multidisciplinary study documents an aridification trend throughout the 1000 m thick composite terrestrial succession of the western Catalan Pyrenees (NE Iberian Peninsula), representing this time period. The detailed stratigraphic framework integrates sedimentology, paleopedology, biochronology (plant fossils and tetrapod footprints) and geochronology (paleomagnetism). Additional absolute age correlation is also carried out. The new and reviewed data show that the late Carboniferous wet environments (with short drought periods) progressively changed to a strong seasonal semi-arid and arid climate (with short humid periods) through the early Permian. This paleoclimatic trend supports the previously suggested aridification of the Pangean pan-tropical belt, and supports the hypothesis of the influence of the recurrent climatic fluctuations in Central Pangea, being tentatively correlated to the Southern Gondwanan glaciation-deglaciation periods. Therefore, the Carboniferous-Permian terrestrial succession from the Catalan Pyrenees emerges as a continuous record that can help to constrain late Paleozoic paleoenvironmental events.

  5. Timing of global regression and microbial bloom linked with the Permian-Triassic boundary mass extinction: implications for driving mechanisms.

    Science.gov (United States)

    Baresel, Björn; Bucher, Hugo; Bagherpour, Borhan; Brosse, Morgane; Guodun, Kuang; Schaltegger, Urs

    2017-03-06

    New high-resolution U-Pb dates indicate a duration of 89 ± 38 kyr for the Permian hiatus and of 14 ± 57 kyr for the overlying Triassic microbial limestone in shallow water settings of the Nanpanjiang Basin, South China. The age and duration of the hiatus coincides with the Permian-Triassic boundary (PTB) and the extinction interval in the Meishan Global Stratotype Section and Point, and strongly supports a glacio-eustatic regression, which best explains the genesis of the worldwide hiatus straddling the PTB in shallow water records. In adjacent deep marine troughs, rates of sediment accumulation display a six-fold decrease across the PTB compatible with a dryer and cooler climate as indicated by terrestrial plants. Our model of the Permian-Triassic boundary mass extinction (PTBME) hinges on the synchronicity of the hiatus with the onset of the Siberian Traps volcanism. This early eruptive phase released sulfur-rich volatiles into the stratosphere, thus simultaneously eliciting a short-lived ice age responsible for the global regression and a brief but intense acidification. Abrupt cooling, shrunk habitats on shelves and acidification may all have synergistically triggered the PTBME. Subsequently, the build-up of volcanic CO 2 induced a transient cool climate whose early phase saw the deposition of the microbial limestone.

  6. Mineralogical and Geochemical Characteristics of Late Permian Coals from the Mahe Mine, Zhaotong Coalfield, Northeastern Yunnan, China

    Directory of Open Access Journals (Sweden)

    Xibo Wang

    2015-07-01

    Full Text Available This paper reports the mineralogical and geochemical compositions of the Late Permian C2, C5a, C5b, C6a, and C6b semianthracite coals from the Mahe mine, northeastern Yunnan, China. Minerals in the coals are mainly made up of quartz, chamosite, kaolinite, mixed-layer illite/smectite (I/S, pyrite, and calcite; followed by anatase, dolomite, siderite, illite and marcasite. Similar to the Late Permian coals from eastern Yunnan, the authigenic quartz and chamosite were precipitated from the weathering solution of Emeishan basalt, while kaolinite and mixed-layer I/S occurring as lenses or thin beds were related to the weathering residual detrital of Emeishan basalt. However, the euhedral quartz and apatite particles in the Mahe coals were attributed to silicic-rock detrital input. It further indicates that there has been silicic igneous eruption in the northeastern Yunnan. Due to the silicic rock detrital input, the Eu/Eu* value of the Mahe coals is lower than that of the Late Permian coals from eastern Yunnan, where the detrital particles were mainly derived from the basalt. The high contents of Sc, V, Cr, Co, Ni, Cu, Ga, and Sn in the Mahe coals were mainly derived from the Kangdian Upland.

  7. The youngest trigonotarbid Permotarbus schuberti n. gen., n. sp. from the Permian Petrified Forest of Chemnitz in Germany

    Directory of Open Access Journals (Sweden)

    J. A. Dunlop

    2013-08-01

    Full Text Available A new trigonotarbid (Arachnida: Trigonotarbida is described as Permotarbus schuberti n. gen., n. sp. from the Early Permian Petrified Forest (Rotliegend of Chemnitz in Saxony (Germany. At ca. 290 Ma it represents the youngest record of this extinct arachnid order discovered to date. Its familial affinities are uncertain, but may lie close to the Aphantomartidae. The distribution of the trigonotarbid genera through time is summarised, together with a list of their seventy-seven fossil-yielding localities. Together they offer a broad overview of the group's fossil record, which is heavily biased towards the Moscovian Stage (ca. 307–312 Ma of the Late Carboniferous in Europe and North America. This is due in no small part to numerous localities associated with coal mining districts, and trigonotarbids are found less frequently after this stage. While it is tempting to associate this with biological events – such as a putative "Carboniferous Rainforest Collapse" dating to ca. 305 Ma – it is difficult to differentiate the effects of genuine extinction patterns from artefacts caused by fewer appropriate localities in the economically less relevant latest Carboniferous and Early Permian strata. Nevertheless, trigonotarbids became extinct at some point after the Early Permian and loss of the Coal Measures forests remains one of the most likely possible causes. doi:10.1002/mmng.201300012

  8. THE SEDIMENTOLOGY OF THE LOWER PERMIAN DANDOT FORMATION: A COMPONENT OF THE GONDWANA DEGLACIATION SEQUENCE OF THE SALT RANGE, PAKISTAN

    Directory of Open Access Journals (Sweden)

    IRFAN U. JAN

    2016-03-01

    Full Text Available The Dandot Formation is a part of the Lower Permian, dominantly continental, Gondwanan Nilawahan Group in the Salt Range, Pakistan. The formation conformably overlies the glacio-fluvial Tobra Formation and has a sharp conformable contact with the overlying fluvio-continental Warchha Sandstone. Sedimentary analyses show that the Dandot Formation consists of: 1. bioturbated sandstone lithofacies (L1, 2. dark green mudstone/shale lithofacies (L2, 3. flaser bedded sandstone lithofacies (L3, 4. rippled sandstone lithofacies (L4, 5. cross-bedded sandstone lithofacies (L5, and 6. planar sandstone lithofacies (L6. These can be grouped into shoreface, inner shelf, and tidal flat and estuarine facies associations, deposited in shallow marine to intertidal environments. The upper part of the Tobra Formation at the Choa-Khewra road section, where it conformably underlies the Dandot Formation, contains palynomorphs assignable to the earliest Permian 2141B Biozone. In south Oman, the 2141B Biozone is closely associated with the Rahab Shale Member, a widespread shale unit which is considered to represent part of a Permian deglaciation sequence which culminates in the marine beds of the Lower Gharif Member, interpreted as due to post glacial marine transgression. Thus, the Tobra Formation and the overlying marine Dandot Formation may form part of a similar deglaciation sequence.

  9. Kerogen morphology and geochemistry at the Permian-Triassic transition in the Meishan section, South China: Implication for paleoenvironmental variation

    Science.gov (United States)

    Sawada, Ken; Kaiho, Kunio; Okano, Kazuki

    2012-08-01

    Detailed fluorescent microscopic observations and organic geochemical analyses for insoluble sedimentary organic matter (kerogens) are conducted on the end-Permian to earliest Triassic sediments in the Meishan section A of South China. The main objectives of the present study are to reconstruct variations of marine and terrestrial environments, and to evaluate bulk characteristics of terrestrial input in the palaeo-Tethys ocean for the Permian-Triassic boundary (PTB). Most of kerogens in the Meishan section are mainly composed of marine algae-derived amorphous organic matter, while terrestrial plant-derived amorphous organic matter is remarkably dominant in the mass extinction horizon reported previously. The relative abundances of marine organic matter may vary depending on marine production rather than terrestrial input in the palaeo-Tethys associated with changing terrestrial vegetation. We also identified aromatic furans as major compounds in kerogen pyrolysate of all layers. It is possible that sources of aromatic furans with alkyl group, fungi and lichen, proliferated as disaster biota in terrestrial ecosystem through the PTB. Higher abundances of herbaceous organic matter are observed in the layers above the mass extinction horizon. However, the conifer biomarker retene can be identified in kerogen pyrolysates of all layers. These results imply that the productions of herbaceous plants increased as dominant pioneer biota in early stage of recovery for terrestrial ecosystem after its collapse, but also that woody plant potentially continued to be produced in land area throughout the end-Permian and earliest-Triassic.

  10. Permian-Triassic boundary microbialites at Zuodeng Section, Guangxi Province, South China: Geobiology and palaeoceanographic implications

    Science.gov (United States)

    Fang, Yuheng; Chen, Zhong-Qiang; Kershaw, Stephen; Yang, Hao; Luo, Mao

    2017-05-01

    A previously unknown microbialite bed in the Permian-Triassic (P-Tr) boundary beds of Zuodeng section, Tiandong County, Guangxi, South China comprises a thin (5 cm maximum thickness) stromatolite in the lower part and the remaining 6 m is thrombolite. The Zuodeng microbialite has a pronounced irregular contact between the latest Permian bioclastic limestone and microbialite, as in other sites in the region. The stromatolite comprises low-relief columnar and broad domal geometries, containing faint laminations. The thrombolite displays an irregular mixture of sparitic dark coloured altered microbial fabric and light coloured interstitial sediment in polished blocks. Abundant microproblematic calcimicrobe structures identified here as Gakhumella are preserved in dark coloured laminated areas of the stromatolite and sparitic areas in thrombolites (i.e. the calcimicrobial part, not the interstitial sediment) and are orientated perpendicular to stromatolitic laminae. Each Gakhumella individual has densely arranged segments, which form a column- to fan-shaped structure. Single segments are arch-shaped and form a thin chamber between segments. Gakhumella individuals in the stromatolite and thrombolite are slightly different from each other, but are readily distinguished from the Gakhumella- and Renalcis-like fossils reported from other P-Tr boundary microbialites in having a smaller size, unbranching columns and densely arranged, arch-shaped segments. Renalcids usually possess a larger body size and branching, lobate outlines. Filament sheath aggregates are also observed in the stromatolite and they are all orientated in one direction. Both Gakhumella and filament sheath aggregates may be photosynthetic algae, which may have played an important role in constructing the Zuodeng microbialites. Other calcimicrobes in the Zuodeng microbialite are spheroids, of which a total of five morphological types are recognized from both stromatolite and thrombolite: (1) sparry calcite

  11. Late Early Permian continental ichnofauna from Lake Kemp, north-central Texas, USA

    Science.gov (United States)

    Lucas, S.G.; Voigt, S.; Lerner, A.J.; Nelson, W.J.

    2011-01-01

    Continental trace fossils of Early Permian age are well known in the western United States from Wolfcampian (~. Asselian to Artinskian) strata, but few examples are known from Leonardian (~. Kungurian) deposits. A substantial ichnofauna from strata of the lower part of the Clear Fork Formation at Lake Kemp, Baylor County, Texas, augments the meager North American record of Leonardian continental trace fossil assemblages. Ichnofossils at Lake Kemp occur in the informally-named Craddock dolomite member of the Clear Fork Formation, which is 12-15. m above the local base of the Clear Fork. The trace-bearing stratum is an up-to-0.3. m thick, laminated to flaser-bedded, dolomitic siltstone that also contains mud cracks, raindrop impressions, microbially induced mat structures, and some land-plant impressions. We interpret the Craddock dolomite member as the feather-edge of a marine transgressive carbonate deposit of an irregular coastline marked by shallow bays or estuaries on the eastern shelf of the Midland basin, and the trace-fossil-bearing stratum at Lake Kemp is an unchannelized flow deposit on a muddy coastal plain. The fossil site at Lake Kemp yields a low to moderately diverse fauna of invertebrate and vertebrate traces. A sparse invertebrate ichnofauna consists of arthropod feeding and locomotion traces assigned to Walpia cf. W. hermitensis White, 1929 and Diplichnites gouldi Gevers in Gevers et al., 1971. Tetrapod footprints are most common and assigned to Batrachichnus salamandroides (Geinitz, 1861), cf. Amphisauropus kablikae (Geinitz and Deichm??ller, 1882), and Dromopus lacertoides (Geinitz, 1861), which represent small temnospondyl, seymouriamorph, and basal sauropsid trackmakers. Both the traces and sedimentary features of the fossil horizon indicate a freshwater setting at the time of track formation, and the trace assemblage represents the Scoyenia ichnofacies and the Batrachichnus ichnofacies in an overbank environment with sheet flooding and shallow

  12. Drive-induced delocalization in the Aubry-André model

    Science.gov (United States)

    Ray, S.; Ghosh, A.; Sinha, S.

    2018-01-01

    Motivated by the recent experiment by Bordia et al. [Nat. Phys. 13, 460 (2017), 10.1038/nphys4020], we study the single particle delocalization phenomena of the Aubry-André (AA) model subjected to periodic drives. In two distinct cases we construct an equivalent classical description to illustrate that the drive-induced delocalization phenomena stems from an instability and the onset of chaos in the underlying dynamics. In the first case we analyze the delocalization and the thermalization in a time modulated AA potential with respect to driving frequency and demonstrate that there exists a threshold value of the amplitude of the drive. In the next example, we show that the periodic modulation of the phase of the hopping amplitude induced by a gauge field leads to an unusual effect on delocalization with a nonmonotonic dependence on the driving frequency. Within a window of such a driving frequency a delocalized Floquet band with a mobility edge appears, exhibiting multifractality in the spectrum as well as in the Floquet eigenfunctions. Finally, we explore the effect of interaction and discuss how the results of the present analysis can be tested experimentally.

  13. La conquista interior de la vida. Le Corbusier y André Malraux

    Directory of Open Access Journals (Sweden)

    Ana Sofía Pereira da Silva

    2016-05-01

    Escritos de ambos autores y algunas obras de Le Corbusier –Museo Mundial del Mundaneum y Museo de Crecimiento Ilimitado– serán observados con el sentido de mapear las afinidades existentes entre los dos autores. Sin embargo, las circunstancias pragmáticas de la vida a  menudo se entrometen oponiendo lo que suele estar en consonancia. La clasificación de monumento histórico atribuida por André Malraux a la Villa Savoye, mientras fuera Ministro de los Asuntos Culturales, es presentada con la intuición de salvar una de las obras maestras de Le Corbusier. Sin embargo, esta acción terminó impidiendo al arquitecto encontrar en la degradación de la Villa Savoye un pretexto para su transformación, en una primera fase, vetándole también, finalmente, el proyecto de la  restauración de la casa, que es confiada a un arquitecto de los Monumentos Nacionales.2 Este momento intuido de fricción entre los dos  autores será motivo de observación, no arriesgando la evidente afinidad entre los dos.

  14. Chemical Profile and Antioxidant Activity of the Oil from Peony Seeds (Paeonia suffruticosa Andr.

    Directory of Open Access Journals (Sweden)

    Xin Yang

    2017-01-01

    Full Text Available Peony seed oil (PSO is a novel vegetable oil developed from the seeds of Paeonia suffruticosa Andr. The present study aimed to make an overall investigation on the chemical profile and antioxidant activities of PSO for reasonable development and utilization of this new resource food. Chemical analysis revealed that PSO was characterized by an uncommon high portion of α-linolenic acid (>38%, fairly low ratio of n-6 to n-3 polyunsaturated fatty acids (0.69, and much higher content of γ-tocopherol than various conventional seed oils. In vitro assay indicated that PSO is a more potent scavenger of free radicals than extra virgin olive oil. Moderate intake of PSO exhibited obvious protection against various oxidative damages such as tetrachloromethane-induced acute liver injury in mice and diet-induced hyperlipidemia in rats. The changes in the key indicators of oxidative injury and fatty acid composition in the liver caused by PSO administration were measured, and the results demonstrated that antioxidant properties of PSO are closely related to their characteristic chemical composition. Consequently, the present study provided new evidence for the health implications of PSO, which deserves further development for medical and nutritional use against oxidative damages that are associated with various diseases.

  15. Karl Andrée (1880-1959) sedimentologist and marine geologist

    Science.gov (United States)

    Dullo, Wolf-Christian; Pfaffl, Fritz A.

    2017-09-01

    Karl Andrée began studying questions of sedimentology and oceanography in 1908 when working as an assistant at the University of Marburg and he remained faithful to these subjects until his death in 1959. The vast majority of his scientific contributions, however, were published during his time at the University of Königsberg (1915-1945). There he published his fundamental papers on marine geology, all of which adhered strictly to the principles of uniformitarianism, and helped improve our understanding of sedimentary processes and the stratigraphic record. His scientific work has enormous breadth. In the course of 55 years, he published 124 individual papers and books, some of which became classic textbooks. His versatility is particularly evident in his book "Geology of the Seafloor", which contains many pertinent observations and descriptions still relevant today, even if it has fallen out of fashion. This scientist and university teacher was the first to successfully present the huge field of marine geology in all its facet and to consider the deposition of marine sediments as a function of their geographical distribution.

  16. 77 FR 34988 - Notice of Inventory Completion: San Diego State University, San Diego, CA

    Science.gov (United States)

    2012-06-12

    .... ACTION: Notice. SUMMARY: San Diego State University Archeology Collections Management Program has... that believes itself to be culturally affiliated with the human remains and associated funerary objects may contact San Diego State University Archeology Collections Management Program. Repatriation of the...

  17. An integrated study of the Grayburg/San Andres reservoir, Foster and south Cowden fields, Ector County, Texas. Quarterly report, January 1--March 31, 1996

    Energy Technology Data Exchange (ETDEWEB)

    Trentham, R.C.; Weinbrandt, R.; Reeves, J.J.

    1996-06-17

    The principal objective of this research is to demonstrate in the field that 3D seismic data can be used to aid in identifying porosity zones, permeability barriers and thief zones and thereby improve waterflood design. Geologic and engineering data will be integrated with the geophysical data to result in a detailed reservoir characterization. Reservoir simulation will then be used to determine infill drilling potential and the optimum waterflood design for the project area. This design will be implemented and the success of the waterflood evaluated.

  18. APPLICATION OF RESERVOIR CHARACTERIZATION AND ADVANCED TECHNOLOGY TO IMPROVE RECOVERY AND ECONOMICS IN A LOWER QUALITY SHALLOW SHELF SAN ANDRES RESERVOIR

    International Nuclear Information System (INIS)

    Raj Kumar; Keith Brown; Hickman, T. Scott; Justice, James J.

    2000-01-01

    The Class 2 Project at West Welch was designed to demonstrate the use of advanced technologies to enhance the economics of improved oil recovery (IOR) projects in lower quality Shallow Shelf Carbonate (SSC) reservoirs, resulting in recovery of additional oil that would otherwise be left in the reservoir at project abandonment. Accurate reservoir description is critical to the effective evaluation and efficient design of IOR projects in the heterogeneous SSC reservoirs. Therefore, the majority of Budget Period 1 was devoted to reservoir characterization. Technologies being demonstrated include: (1) Advanced petrophysics; (2) Three-dimensional (3-D) seismic; (3) Crosswell bore tomography; (4) Advanced reservoir simulation; (5) Carbon dioxide (CO 2 ) stimulation treatments; (6) Hydraulic fracturing design and monitoring; and (7) Mobility control agents

  19. APPLICATION OF RESERVOIR CHARACTERIZATION AND ADVANCED TECHNOLOGY TO IMPROVE RECOVERY AND ECONOMICS IN A LOWER QUALITY SHALLOW SHELF SAN ANDRES RESERVOIR

    International Nuclear Information System (INIS)

    Hickman, T. Scott

    2003-01-01

    The Class 2 Project at West Welch was designed to demonstrate the use of advanced technologies to enhance the economics of improved oil recovery (IOR) projects in lower quality Shallow Shelf Carbonate (SSC) reservoirs, resulting in recovery of additional oil that would otherwise be left in the reservoir at project abandonment. Accurate reservoir description is critical to the effective evaluation and efficient design of IOR projects in the heterogeneous SSC reservoirs. Therefore, the majority of Budget Period 1 was devoted to reservoir characterization. Technologies being demonstrated include: (1) Advanced petrophysics; (2) Three-dimensional (3-D) seismic; (3) Crosswell bore tomography; (4) Advanced reservoir simulation; (5) Carbon dioxide (CO 2 ) stimulation treatments; (6) Hydraulic fracturing design and monitoring; and (7) Mobility control agents

  20. APPLICATION OF RESERVOIR CHARACTERIZATION AND ADVANCED TECHNOLOGY TO IMPROVE RECOVERY AND ECONOMICS IN A LOWER QUALITY SHALLOW SHELF SAN ANDRES RESERVOIR

    International Nuclear Information System (INIS)

    Hickman, T. Scott; Justice, James J.

    2001-01-01

    The Class 2 Project at West Welch was designed to demonstrate the use of advanced technologies to enhance the economics of improved oil recovery (IOR) projects in lower quality Shallow Shelf Carbonate (SSC) reservoirs, resulting in recovery of additional oil that would otherwise be left in the reservoir at project abandonment. Accurate reservoir description is critical to the effective evaluation and efficient design of IOR projects in the heterogeneous SSC reservoirs. Therefore, the majority of Budget Period 1 was devoted to reservoir characterization. Technologies being demonstrated include: (1) Advanced petrophysics; (2) Three-dimensional (3-D) seismic; (3) Crosswell bore tomography; (4) Advanced reservoir simulation; (5) Carbon dioxide (CO 2 ) stimulation treatments; (6) Hydraulic fracturing design and monitoring; and (7) Mobility control agents

  1. Trusteeship and Cooperation in the Flemish merchants community in Cadiz: The brotherhood of “San Andrés de los Flamencos” (17th-18th centuries

    Directory of Open Access Journals (Sweden)

    Prof. Dr Ana Crespo Solana

    2013-06-01

    Full Text Available  This article presents information on the development, over the centuries, of a little known aspect of the communities of foreign Merchants who settled in Spanish cities during the Modern Age. Using previously unpublished documents, relating to the “Ilustre y Antigua Nación Flamenca” of Seville and Cádiz, the article aims to give a description of the charitable activities carried out by the colony of merchants in Seville and, especially, in Cádiz, who were natives of the Southern Low Countries and the Dutch Republic. This merchant community had assigned the administration of a “Patronato” to their brotherhood, which included the control of numerous items of furniture and properties of great value. The description of this religious and benevolent activity gives a no less interesting view, when compared with the purely economic one, of its importance on the integration of these communities into the Spanish society of the 17th and 18th centuries. This research has been made with historical documents from Spanish Archives (Cádiz, Madrid and Alcalá de Henares.

  2. APPLICATION OF RESERVOIR CHARACTERIZATION AND ADVANCED TECHNOLOGY TO IMPROVE RECOVERY AND ECONOMICS IN A LOWER QUALITY SHALLOW SHELF SAN ANDRES RESERVOIR

    Energy Technology Data Exchange (ETDEWEB)

    T. Scott Hickman; James J. Justice

    2001-06-16

    The Class 2 Project at West Welch was designed to demonstrate the use of advanced technologies to enhance the economics of improved oil recovery (IOR) projects in lower quality Shallow Shelf Carbonate (SSC) reservoirs, resulting in recovery of additional oil that would otherwise be left in the reservoir at project abandonment. Accurate reservoir description is critical to the effective evaluation and efficient design of IOR projects in the heterogeneous SSC reservoirs. Therefore, the majority of Budget Period 1 was devoted to reservoir characterization. Technologies being demonstrated include: (1) Advanced petrophysics; (2) Three-dimensional (3-D) seismic; (3) Crosswell bore tomography; (4) Advanced reservoir simulation; (5) Carbon dioxide (CO{sub 2}) stimulation treatments; (6) Hydraulic fracturing design and monitoring; and (7) Mobility control agents.

  3. APPLICATION OF RESERVOIR CHARACTERIZATION AND ADVANCED TECHNOLOGY TO IMPROVE RECOVERY AND ECONOMICS IN A LOWER QUALITY SHALLOW SHELF SAN ANDRES RESERVOIR

    Energy Technology Data Exchange (ETDEWEB)

    Tom Beebe

    2003-05-05

    The OXY-operated Class 2 Project at West Welch is designed to demonstrate how the use of advanced technology can improve the economics of miscible CO{sub 2} injection projects in lower quality Shallow Shelf Carbonate reservoirs. The research and design phase (Budget Period 1) primarily involved advanced reservoir characterization. The current demonstration phase (Budget Period 2) is the implementation of the reservoir management plan for an optimum miscible CO{sub 2} flood design based on the reservoir characterization. Although Budget Period 1 for the Project officially ended 12/31/96, reservoir characterization and simulation work continued during the Budget Period 2. During the seventh annual reporting period (8/3/00-8/2/01) covered by this report, work continued on interpretation of the interwell seismic data to create porosity and permeability profiles which were distributed into the reservoir geostatistically. The initial interwell seismic CO{sub 2} monitor survey was conducted and the acquired data processed and interpretation started. Only limited well work and facility construction were conducted in the project area. The CO{sub 2} injection initiated in October 1997 was continued, although the operator had to modify the operating plan in response to low injection rates, well performance and changes in CO{sub 2} supply. CO{sub 2} injection was focused in a smaller area to increase the reservoir processing rate. By the end of the reporting period three producers had shown sustained oil rate increases and six wells had experienced gas (CO{sub 2}) breakthrough.

  4. Species - San Diego Co. [ds121

    Data.gov (United States)

    California Natural Resource Agency — This is the Biological Observation Database point layer representing baseline observations of sensitive species (as defined by the MSCP) throughout San Diego County....

  5. Revisiting platinum group elements of Late Permian coals from western Guizhou Province, SW China

    Energy Technology Data Exchange (ETDEWEB)

    Qi, Liang [State Key Lab of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002 (China); Gao, Jianfeng [Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR (China)

    2008-08-05

    Twenty five coal samples from the Late Permian coal-bearing strata in Weining, Nayong, and Zhijin, western Guizhou Province, SW, China, were analyzed for platinum group elements (PGEs). The coal ashes were digested by the Carius tube technique and accurately measured by isotope dilution-inductively coupled plasma mass spectrometry (ID-ICP-MS) for all PGEs. The results are much lower than the previous reported values. Our study suggested that the previously reported PGE values are incorrect and may due to the polyatomic interferences in ICP-MS measurements. In our study, samples from the Weining coalfield have the lowest PGE contents (from 0.019 Ir to 0.42 ng/g Pd), which represent the PGE background value in coal in western Guizhou province. Some of the coals have Pt and Pd contents about 20-times higher than the background value, indicating PGEs are concentrated. We also reported new and reliable PGE data and background value of coal in western Guizhou province, SW, China, and suggested to rework the PGE background values of Chinese coals. (author)

  6. Biolaminoid facies in a peritidal sabkha: Permian Platy Dolomite of northern Poland

    Science.gov (United States)

    Brehm, Ulrike; Gasiewicz, Andreij; Gerdes, Giesela; Krumbein, Wolfgang

    The Platy Dolomite, a carbonate unit in the Zechstein Formation (Upper Permian) of the Leba Elevation, Poland, was deposited in a semi-closed or completely separated back-barrier sabkha environment. This arid, hypersaline zone is comparable to the recent Gavish Sabkha, Sinai. The processes which formed the modern Gavish Sabkha are similar to those responsible for the biolaminoid formation in the Platy Dolomite series. The deposition of this Platy Dolomite was mainly the result of microbial activity building extensive microbial mats. The Platy Dolomite is characterized by loosely packed microbial biolaminoids (a less significantly laminated build-up of biogenetic sediments) with horizontally or obliquely to vertically orientated filaments. Intermediary coated grains occur. Densely packed, flat laminated stromatolitic rocks, pure oolites, and bioclastic sedimentary strata are rarely intercalated with the biolaminoid beds. Laboratory and field investigations indicate that carbonate formation was induced by the chemoorganotrophic bacterial decay of cyanobacterial mats. Magnesium was bound and absorbed by organic matter and later liberated by anaerobic decay. Early diagenetic processes formed Mg2+- and Ca2+-enriched solutions in which carbonates precipitated biologically and chemically. A system of biogenic carbonate formation of the Platy Dolomite microbiolite series is proposed and supported by the results of microbiological laboratory studies.

  7. Architecture and quantitative assessment of channeled clastic deposits, Shihezi sandstone (Lower Permian, Ordos Basin, China

    Directory of Open Access Journals (Sweden)

    Chengye Jia

    2017-02-01

    Full Text Available Lower Permian Shihezi sandstone in Ordos Basin is the largest gas reservoir in China. Architecture elements of channel, overbank and floodplain facies of braided channel deposits were identified through an outcrops survey, and their proportion of channel facies have been quantitatively estimated from well logging. Characteristics of architecture elements, such as sand thickness, bounding surfaces and lithofacies were investigated through outcrops and core. Petrology of Shihezi sandstone has also been studied in detail. Analysis on sandstone components shows that monocrystalline quartz with approximately 76% bulk volume, and lithic up to 5%–45% bulk volume, are the two main components. Litharenite and lithic quartz sandstone are the main rock types. Compaction is concluded by former researchers as the control factor of low permeability. Examination through thin section reveals that secondary pores developed well in coarse sand. Inter-granular dissolution is included as the positive effect to increasing porosity, and is concluded as the control factor to the generation of net pay. Scale of coarse grained channel fills and channel bar sandstone bodies are quantitatively estimated. Strike-oriented, dip-oriented, and vertical distribution of channel fills and channel bar sandstone bodies have been investigated. The geometry of sand bodies can be depicted as an elongated lens. Subsurface mapping reveals that channel sandstone bodies distribute widely from both lateral and longitudinal cross section profiles, and are poorly connected.

  8. Ocean Acidification and the End-Permian Mass Extinction: To What Extent does Evidence Support Hypothesis?

    Directory of Open Access Journals (Sweden)

    Marie-Béatrice Forel

    2012-09-01

    Full Text Available Ocean acidification in modern oceans is linked to rapid increase in atmospheric CO2, raising concern about marine diversity, food security and ecosystem services. Proxy evidence for acidification during past crises may help predict future change, but three issues limit confidence of comparisons between modern and ancient ocean acidification, illustrated from the end-Permian extinction, 252 million years ago: (1 problems with evidence for ocean acidification preserved in sedimentary rocks, where proposed marine dissolution surfaces may be subaerial. Sedimentary evidence that the extinction was partly due to ocean acidification is therefore inconclusive; (2 Fossils of marine animals potentially affected by ocean acidification are imperfect records of past conditions; selective extinction of hypercalcifying organisms is uncertain evidence for acidification; (3 The current high rates of acidification may not reflect past rates, which cannot be measured directly, and whose temporal resolution decreases in older rocks. Thus large increases in CO2 in the past may have occurred over a long enough time to have allowed assimilation into the oceans, and acidification may not have stressed ocean biota to the present extent. Although we acknowledge the very likely occurrence of past ocean acidification, obtaining support presents a continuing challenge for the Earth science community.

  9. Evidence of a therapsid scavenger in the Late Permian Karoo Basin, South Africa

    Directory of Open Access Journals (Sweden)

    Nicholas Fordyce

    2012-10-01

    Full Text Available Dicynodonts are an extinct group of herbivorous non-mammalian therapsids (‘mammal-like’ reptiles that are widely known from terrestrial Permo-Triassic strata throughout Pangaea. Dicynodont fossil remains are common within the Late Permian Beaufort Group of the Karoo Basin in South Africa. A large, partially articulated dicynodont skeleton recovered from the TropidostomaAssemblage Zone is taphonomically important in having an unusual disarticulation pattern, bone surface punctures and a broken tooth of an unidentified carnivore associated with it. Here we report on the nature of the bone damage, and the identity of the carnivore that lost a canine tooth whilst scavenging the dicynodont carcass. The morphological characteristics of the serrations on the unidentified tooth were compared with those of contemporaneous carnivores, the gorgonopsians and therocephalians. Scanning electron microscopy analysis of a silicone cast of the unidentified tooth revealed distinctive 0.5-mm square-shaped serrations. Our comparative assessment of the tooth size, curvature, cross-sectional shape and morphology of the serrations revealed that the unidentified canine most closely matched Aelurognathus,a gorgonopsian known from the same assemblage zone.

  10. The genesis and isotopic composition of carbonates associated with some Permian Australian coals

    International Nuclear Information System (INIS)

    Gould, K.W.; Smith, J.W.

    1979-01-01

    Siderite and calcite are the two forms of carbonate commonly associated with Permian Australian coals. The former occurs as disseminated spherulites and is a product of the early post-depositional environment. Isotopic measurements show that the CO 2 fixed as siderite did not result from the direct oxidation of photosynthetically derived materials, but rather from the anaerobic fermentation of these. The higher concentrations of calcite are generally found towards the roofs of coal seams and are characterized by isotopic enrichments to delta 13 C values of +25% PDB. Isotopic exchange between CO 2 and CH 4 within the coal seam is postulated as the mechanism which leads to the formation of isotopically heavy CO 2 . At sites along the seam margins where the CO 2 escapes, interaction with circulating metal ions or preexisting calcite results in the deposition of ''heavy'' calcite. With increasing alteration of coal by thermal metamorphism, the 13 C content of calcites and finally siderites decreases so that it more nearly approaches that of the associated coal. (Auth.)

  11. The Permian reptile Opisthodontosaurus carrolli: a model for acrodont tooth replacement and dental ontogeny.

    Science.gov (United States)

    Haridy, Yara; LeBlanc, Aaron R H; Reisz, Robert R

    2018-03-01

    Continuous tooth replacement is common for tetrapods, but some groups of acrodont lepidosaurs have lost the ability to replace their dentition (monophyodonty). Acrodonty, where the tooth attaches to the apex of the jawbone, is an unusual form of tooth attachment that has been associated with the highly autapomorphic condition of monophyodonty. Beyond Lepidosauria, very little is known about the relationship between acrodonty and monophyodonty in other amniotes. We test for this association with a detailed study of the dentition of Opisthodontosaurus, an unusual Early Permian captorhinid eureptile with acrodont dentition. We provide clear evidence, both histological and morphological, that there were regular tooth replacement events in the lower jaw of Opisthodontosaurus, similar to its captorhinid relatives. Thus, our study of the oldest known amniote with an acrodont dentition shows that acrodonty does not inhibit tooth replacement, and that many of the characteristics assigned to lepidosaurian acrodonty are actually highly derived features of lepidosaurs that have resulted secondarily from a lack of tooth replacement. In the context of reptilian dental evolution, we propose the retention of the simple definition of acrodonty, which only pertains to the relative position of the tooth at the apex of the jaw, where the jaw possesses equal lingual and labial walls. This definition of implantation therefore focuses solely on the spatial relationship between the tooth and the jawbone, and separates this relationship from tooth development and replacement. © 2017 Anatomical Society.

  12. The timing and pattern of biotic recovery following the end-Permian mass extinction

    Science.gov (United States)

    Chen, Zhong-Qiang; Benton, Michael J.

    2012-06-01

    The aftermath of the great end-Permian period mass extinction 252 Myr ago shows how life can recover from the loss of >90% species globally. The crisis was triggered by a number of physical environmental shocks (global warming, acid rain, ocean acidification and ocean anoxia), and some of these were repeated over the next 5-6 Myr. Ammonoids and some other groups diversified rapidly, within 1-3 Myr, but extinctions continued through the Early Triassic period. Triassic ecosystems were rebuilt stepwise from low to high trophic levels through the Early to Middle Triassic, and a stable, complex ecosystem did not re-emerge until the beginning of the Middle Triassic, 8-9 Myr after the crisis. A positive aspect of the recovery was the emergence of entirely new groups, such as marine reptiles and decapod crustaceans, as well as new tetrapods on land, including -- eventually -- dinosaurs. The stepwise recovery of life in the Triassic could have been delayed either by biotic drivers (complex multispecies interactions) or physical perturbations, or a combination of both. This is an example of the wider debate about the relative roles of intrinsic and extrinsic drivers of large-scale evolution.

  13. Radiosensitivity of subterranean bacteria in the Hungarian upper permian siltstone formation

    International Nuclear Information System (INIS)

    Farkas, G.; Gazso, L.G.; Diosi, G.

    2002-01-01

    The main purpose of this work was to study the radioresistance of subterranean aerobic and anaerobic isolates from the Hungarian Upper Permian Siltstone (Aleurolite) Formation, in order to assess the safety of potential sites of future underground repositories for nuclear waste. A total of 93 isolates were studied. The radiosensitivities of these aerobic and anaerobic bacteria isolates were determined: the D 10 values (decimal reducing doses) of the aerobic spore-formers lay in the range 0.80-2.44 kGy, and those of the anaerobic spore-formers lay in the range 1.86-4.93 kGy. The D 10 values of the aerobic and anaerobic vegetative isolates were much lower, in the ranges 0.11-0.57 and 0.22-0.40 kGy, respectively. The variability in bacterial radioresistance indicates the biodiversity at this potential disposal site. These results can affect the construction of a future underground repository, since knowledge of the most resistant microorganism may be of importance as concerns calculation of the time required to inactivate the bacteria surrounding the containers

  14. Thermal properties of Permian Basin evaporites to 493 K temperature and 30 MPa confining pressure

    International Nuclear Information System (INIS)

    Durham, W.B.; Heard, H.C.; Boro, C.O.; Keller, K.T.; Ralph, W.E.; Trimmer, D.A.

    1987-03-01

    Laboratory measurements of the thermal conductivity and diffusivity of four rock salts, two anhydrites, and two dolomites bordering Cycle 4 and Cycle 5 bedded salt formations in the Permian Basin in Deaf Smith County, Texas, were made in conditions ranging from 303 to 473 K in temperature and 0.1 to 31.0 MPa in hydrostatic confining pressure. Within the +-5% measurement resolution neither conductivity nor diffusivity showed a dependence upon pressure in any of the rocks. Conductivity and diffusivity in all rocks had a negative temperature dependence. For the Cycle 4 salt samples, conductivity fell from 5.5 to 3.75 W/m . K, and diffusivity fell from about 2.7 to 1.7 x 10 -6 m 2 /s. One Cycle 5 salt was a single crystal with anomalous results, but the other had a low conductivity with very weak temperature dependence and a high diffusivity. In the nonsalts, conductivity and diffusivity decreased 10 to 20% over the temperature range explored. In measurements of the coefficient of thermal linear expansion for Cycle 5 salt and nonsalts, the coefficient typically varied from about 12 x 10 -6 K -1 at P = 3.0 MPa to 4 x 10 -6 K -1 at P = 30 MPa for both nonsalt rocks. In anhydrite, it decreased with increasing temperature. In dolomite, the coefficient increased at roughly the same rate. Expansion of the salt ranged from 33 to 38 x 10 -6 K -1 and was independent of pressure and temperature

  15. Revised stratigraphy of the Permian Bainmedart coal measures, northern Prince Charles Mountains, east Antarctica

    Energy Technology Data Exchange (ETDEWEB)

    McLoughlin, S.; Drinnan, A.N. [University of Melbourne, Parkville, Vic. (Australia). School of Botany

    1997-05-01

    The Bainmedart Coal Measures constitute the middle portion of the Permian-Triassic Amery Group, which represents the only substantial Palaeozoic-Mesozoic sedimentary succession exposed in eastern Antarctica outside the Transantarctic Mountains. The coal measures overlie alluvial fan deposits of the Radok Conglomerate and are conformably overlain by the dominantly fluviatile Flagstone Bench Formation. The coal measures were deposited within alluvial settings dominated by north to northeasterly flowing, low-sinuosity rivers chiefly confined to broad, fault-bounded, valleys of the Lambert Graben, a major late Palaeozoic to early Mesozoic failed rift system. Both climatic and local tectonic factors are considered to have been the major influences on the pattern of coal measure sedimentation. Recent mapping has identified a much greater thickness of sediments within the coal measures than had been inferred previously. The Bainmedart Coal Measures are formally subdivided into six members. In ascending stratigraphic order these are: Dart Fields Conglomerate Member ({lt} 3m thick), Toploje Member (300 m thick), Dragons Teeth Member (15-25 m thick), Glossopteris Gully Member (670 m thick), Grainer Member (350 m thick), acid McKinnon Member (530 m thick).

  16. Body size reductions in nonmammalian eutheriodont therapsids (Synapsida) during the end-Permian mass extinction.

    Science.gov (United States)

    Huttenlocker, Adam K

    2014-01-01

    The extent to which mass extinctions influence body size evolution in major tetrapod clades is inadequately understood. For example, the 'Lilliput effect,' a common feature of mass extinctions, describes a temporary decrease in body sizes of survivor taxa in post-extinction faunas. However, its signature on existing patterns of body size evolution in tetrapods and the persistence of its impacts during post-extinction recoveries are virtually unknown, and rarely compared in both geologic and phylogenetic contexts. Here, I evaluate temporal and phylogenetic distributions of body size in Permo-Triassic therocephalian and cynodont therapsids (eutheriodonts) using a museum collections-based approach and time series model fitting on a regional stratigraphic sequence from the Karoo Basin, South Africa. I further employed rank order correlation tests on global age and clade rank data from an expanded phylogenetic dataset, and performed evolutionary model testing using Brownian (passive diffusion) models. Results support significant size reductions in the immediate aftermath of the end-Permian mass extinction (ca. 252.3 Ma) consistent with some definitions of Lilliput effects. However, this temporal succession reflects a pattern that was underscored largely by Brownian processes and constructive selectivity. Results also support two recent contentions about body size evolution and mass extinctions: 1) active, directional evolution in size traits is rare over macroevolutionary time scales and 2) geologically brief size reductions may be accomplished by the ecological removal of large-bodied species without rapid originations of new small-bodied clades or shifts from long-term evolutionary patterns.

  17. Thermal conductivity and diffusivity of Permian Basin bedded salt at elevated pressure and temperature

    International Nuclear Information System (INIS)

    Durham, W.B.; Boro, C.O.; Beiriger, J.M.; Montan, D.N.

    1983-10-01

    Measurements of thermal conductivity and diffusivity were made on five core samples of bedded rock salt from the Permian Basin in Texas to determine its suitability as an underground nuclear waste repository. The sample size was 100 mm in diameter by 250 mm in length. Measurements were conducted under confining pressures ranging from 3.8 to 31.0 MPa and temperatures from room temperature to 473 K. Conductivity showed no dependence on confining pressure but evidenced a monotonic, negative temperature dependence. Four of the five samples showed conductivities clustered in a range of 5.6 +- 0.5 W/m.K at room temperature, falling to 3.6 +- 0.3 W/m.K at 473 K. These values are approximately 20% below those for pure halite, reflecting perhaps the 5 to 20%-nonhalite component of the samples. Diffusivity also showed a monotonic, negative temperature dependence, with four of the five samples clustered in a range of 2.7 +- 0.4 x 10 -6 m 2 /s at room temperature, and 1.5 +- 0.3 x 10 -6 m 2 /s at 473 K, all roughly 33% below the values for pure halite. One sample showed an unusually high conductivity (it also had the highest diffusivity), about 20% higher than the others; and one sample showed an unusually low diffusivity (it also had the lowest conductivity), roughly a factor of 2 lower than the others. 27 references, 8 figures, 4 tables

  18. Permian ultrafelsic A-type granite from Besar Islands group, Johor, peninsular Malaysia

    Science.gov (United States)

    Ghani, Azman A.; Hazad, Fatin Izzani; Jamil, Azmiah; Xiang, Quek Long; Atiqah Wan Ismail, Wan Nur; Chung, Sun-Lin; Lai, Yu-Ming; Roselee, Muhammad Hatta; Islami, Nur; Nyein, Kyaw Kyaw; Amir Hassan, Meor Hakif; Abu Bakar, Mohd Farid; Umor, Mohd Rozi

    2014-12-01

    The granitic rocks of the peninsula have traditionally been divided into two provinces, i.e., Western and Eastern provinces, corresponding to S- and I-type granite respectively. The Western Province granite is characterised by megacrystic and coarse-grained biotite, tin-mineralised, continental collision granite, whereas, the Eastern Province granite is bimodal I-type dominated by granodiorite and associated gabbroic of arc type granite. This paper reports the occurrence of an A-type granite from peninsular Malaysia. The rocks occur in the Besar, Tengah, and Hujung islands located in the southeastern part of the peninsula. The granite is highly felsic with SiO2 ranging from 75.70% to 77.90% (differentiation index = 94.2-97.04). It is weakly peraluminous (average ACNK =1.02), has normative hypersthene (0.09-2.19%) and high alkali content (8.32-8.60%). The granites have many A-type characteristics, among them are shallow level of emplacement, high Ga, FeT/MgO and low P, Sr, Ti, CaO and Nb. Calculated zircon saturation temperatures for the Besar magma ranging from 793 ∘ to 806 ∘C is consistent with high temperature partial melting of a felsic infracrustal source which is taken as one of the mechanisms to produce A-type magma. The occurrence of the A-type granite can be related to the extensional back arc basin in the Indo-China terrane during the earliest Permian.

  19. δ 13C evidence that high primary productivity delayed recovery from end-Permian mass extinction

    Science.gov (United States)

    Meyer, K. M.; Yu, M.; Jost, A. B.; Kelley, B. M.; Payne, J. L.

    2011-02-01

    Euxinia was widespread during and after the end-Permian mass extinction and is commonly cited as an explanation for delayed biotic recovery during Early Triassic time. This anoxic, sulfidic episode has been ascribed to both low- and high-productivity states in the marine water column, leaving the causes of euxinia and the mechanisms underlying delayed recovery poorly understood. Here we use isotopic analysis to examine the changing chemical structure of the water column through the recovery interval and thereby better constrain paleoproductivity. The δ 13C of limestones from 5 stratigraphic sections in south China displays a negative gradient of approximately 4‰ from shallow-to-deep water facies within the Lower Triassic. This intense gradient declines within Spathian and lowermost Middle Triassic strata, coincident with accelerated biotic recovery and carbon cycle stabilization. Model simulations show that high nutrient levels and a vigorous biological pump are required to sustain such a large gradient in δ 13C, indicating that Early Triassic ocean anoxia and delayed recovery of benthic animal ecosystems resulted from too much productivity rather than too little.

  20. New absolute paleointensity determinations for the Permian-Triassic boundary from the Kuznetsk Trap Basalts.

    Science.gov (United States)

    Kulakov, E.; Metelkin, D. V.; Kazansky, A.

    2015-12-01

    We report the results of a pilot absolute paleointensity study of the ~250 Ma basalts of Kuznetsk traps (Kuznetsk Basin, Altai-Sayan folded area). Studied samples are characterized by a reversed polarity of natural remanent magnetization that corresponds to the lower part of Siberian Trap basalts sequence. Geochemical similarity of Kuznets basalts with those from Norilsk region supports this interpretation. Primary origin of thermal remanence in our sample is confirmed by a positive backed contact test. Rock magnetic analyses indicate that the ChRM is carried by single-domain titanomagnetite. The Coe-version of the Thellier-Therllier double-heating method was utilized for the paleointensity determinations. In contrast to the previous studies of the Permian-Triassic Siberian trap basalts, our data indicate that by the P-T boundary the paleofield intensity was relatively high and comparable with geomagnetic field strength for the last 10 millions of years. New results question the duration of the "Mesozoic dipole-low".

  1. Isotope shifts in the late Permian of the Delaware Basin, Texas, precisely timed by varved sediments

    International Nuclear Information System (INIS)

    Magaritz, M.; Oregon Univ., Eugene; Anderson, R.Y.; Holser, W.T.; Saltzmann, E.S.; Garber, J.

    1983-01-01

    Closely spaced samples (285 in number) of varved sediments from the Upper Permian in Delaware Basin, Texas, have been analyzed for delta 13 Csub(carb), delta 13 Csub(org), delta 18 Osub(carb), Csub(org), Csub(carb) and calcite/dolomite. delta 13 C records a dramatic rise from -2.8 to + 5.7per mille in only 4400 years, detected in three sections across the basin, extrapolating smoothly through a 600-year interruption by a local (west side of the basin) fresh-water inflow evidenced by low delta 18 O. This continuity and low Csub(org) within the basin, both indicate that the excess net deposition of Csub(org), necessary to generate the rise in delta 13 C, took place in the ocean external to the Delaware Basin, Correlation with similar records from the Zechstein Basin suggest that the event was world-wide, although this poses obvious difficulties for the carbon cycle. The rate of rise of delta 13 C, and its sustained high level, must imply conversions of oxidized carbon to reduced carbon that are very large depending on which reservoirs were involved. (orig.)

  2. Analysis of cyclical sedimentation in the lower Permian Mchuchuma coalfield (South-West-Tanzania)

    Energy Technology Data Exchange (ETDEWEB)

    Casshyap, S M; Kreuser, T; Wopfner, H

    1987-01-01

    A statistical approach by a modified Markov process model was used to prove that the lower Permian coal measures of the Tanzanian Mchuchuma basin developed distinct cyclicities during deposition. From results the transition path of lithologic states typical for this coal sequence is as follows: (A) coarse sandstone, (B) medium sandstone, (C) fine-very fine sandstone, (D) shale, (E) mudstone, (F) coal or (E+F) and again (A) coarse sandstone. The majority of cycles is asymmetric (ABCDEF-ABC..) but symmetrical cycles are present as well (ABCDEFED). The statistical results concur with observed sedimentological evidence of depositional environment. Fining upward cycles correspond to the development of basal channel bars, changing into levees, then into back swamps which are topped by coal swamps. Frequent interbedding of coal and mudstone in the upper part of the coal measures calls for periodic flooding and flushing of fine clastics into coal-forming swamps causing interruption of peat formation. Cyclical deposition is explained by wandering channels in response to varying discharge and rate of deposition, their lateral frequent shifting caused the formation of asymmetrical cycles in this fluviodeltaic depositional model. 33 refs., 7 figs., 1 tab.

  3. Thermomechanical analyses of conceptual repository designs for the Paradox and Permian Basins

    International Nuclear Information System (INIS)

    Loken, M.C.; Callahan, G.D.; Svalstad, D.K.; Wagner, R.A.

    1987-11-01

    The potential repositories are designed to accommodate all waste forms emplaced at various thermal loadings; specifically, commercial high-level waste (30 W/m 2 ), spent fuel (15 W/m 2 ), defense high-level waste (20 W/m 2 ), and remote-handled and contact-handled transuranic nonheat-generating waste. The study evaluates the design parameters, primarily thermal loading, based on a comparison of calculable thermomechanical parameters with prescribed performance constraints. This evaluation was accomplished by numerical simulation using finite element techniques of the canister, disposal room, and repository regions of each potential site. Important thermal and thermomechanical results were compared with their prescribed constraint or limit value. All of the performance constraints were satisfied at the Davis Canyon site in the Paradox Basin for commercial high-level waste, spent fuel, and defense high-level waste at areal thermal loadings of 20 W/m 2 , 15 W/m 2 , and 20 W/m 2 , respectively. Similarly, for the Deaf Smith County site in the Permian Basin, commercial high-level waste, spent fuel, and defense high-level waste thermal loadings of 13.5 W/m 2 , 8.5 W/m 2 , and 6.0 W/m 2 , respectively, satisfied all of the performance constraints. 89 refs., 64 figs., 22 tabs

  4. 75 FR 15611 - Safety Zone; United Portuguese SES Centennial Festa, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2010-03-30

    ...-AA00 Safety Zone; United Portuguese SES Centennial Festa, San Diego Bay, San Diego, CA AGENCY: Coast... navigable waters of the San Diego Bay in support of the United Portuguese SES Centennial Festa. This... Centennial Festa, which will include a fireworks presentation originating from a tug and barge combination in...

  5. 78 FR 34123 - Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA

    Science.gov (United States)

    2013-06-06

    ... completion of an inventory of human remains and associated funerary objects under the control of the San....R50000] Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA... NAGPRA Program has completed an inventory of human remains and associated funerary objects, in...

  6. 78 FR 21403 - Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA

    Science.gov (United States)

    2013-04-10

    ... completion of an inventory of human remains and associated funerary objects under the control of the San....R50000] Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA... NAGPRA Program has completed an inventory of human remains and associated funerary objects, in...

  7. Cuartel San Carlos. Yacimiento veterano

    Directory of Open Access Journals (Sweden)

    Mariana Flores

    2007-01-01

    Full Text Available El Cuartel San Carlos es un monumento histórico nacional (1986 de finales del siglo XVIII (1785-1790, caracterizado por sufrir diversas adversidades en su construcción y soportar los terremotos de 1812 y 1900. En el año 2006, el organismo encargado de su custodia, el Instituto de Patrimonio Cultural del Ministerio de Cultura, ejecutó tres etapas de exploración arqueológica, que abarcaron las áreas Traspatio, Patio Central y las Naves Este y Oeste de la edificación. Este trabajo reseña el análisis de la documentación arqueológica obtenida en el sitio, a partir de la realización de dicho proyecto, denominado EACUSAC (Estudio Arqueológico del Cuartel San Carlos, que representa además, la tercera campaña realizada en el sitio. La importancia de este yacimiento histórico, radica en su participación en los acontecimientos que propiciaron conflictos de poder durante el surgimiento de la República y en los sucesos políticos del siglo XX. De igual manera, se encontró en el sitio una amplia muestra de materiales arqueológicos que reseñan un estilo de vida cotidiana militar, así como las dinámicas sociales internas ocurridas en el San Carlos, como lugar estratégico para la defensa de los diferentes regímenes que atravesó el país, desde la época del imperialismo español hasta nuestros días.

  8. Clockwise rotation of the Santa Marta massif and simultaneous Paleogene to Neogene deformation of the Plato-San Jorge and Cesar-Ranchería basins

    Science.gov (United States)

    Montes, Camilo; Guzman, Georgina; Bayona, German; Cardona, Agustin; Valencia, Victor; Jaramillo, Carlos

    2010-10-01

    A moderate amount of vertical-axis clockwise rotation of the Santa Marta massif (30°) explains as much as 115 km of extension (stretching of 1.75) along its trailing edge (Plato-San Jorge basin) and up to 56 km of simultaneous shortening with an angular shear of 0.57 along its leading edge (Perijá range). Extensional deformation is recorded in the 260 km-wide, fan-shaped Plato-San Jorge basin by a 2-8 km thick, shallowing-upward and almost entirely fine-grained, upper Eocene and younger sedimentary sequence. The simultaneous initiation of shortening in the Cesar-Ranchería basin is documented by Mesozoic strata placed on to lower Eocene syntectonic strata (Tabaco Formation and equivalents) along the northwest-verging, shallow dipping (9-12° to the southeast) and discrete Cerrejón thrust. First-order subsidence analysis in the Plato-San Jorge basin is consistent with crustal stretching values between 1.5 and 2, also predicted by the rigid-body rotation of the Santa Marta massif. The model predicts about 100 km of right-lateral displacement along the Oca fault and 45 km of left-lateral displacement along the Santa Marta-Bucaramanga fault. Clockwise rotation of a rigid Santa Marta massif, and simultaneous Paleogene opening of the Plato-San Jorge basin and emplacement of the Cerrejón thrust sheet would have resulted in the fragmentation of the Cordillera Central-Santa Marta massif province. New U/Pb ages (241 ± 3 Ma) on granitoid rocks from industry boreholes in the Plato-San Jorge basin confirm the presence of fragments of a now segmented, Late Permian to Early Triassic age, two-mica, granitic province that once spanned the Santa Marta massif to the northernmost Cordillera Central.

  9. SANS from interpenetrating polymer networks

    International Nuclear Information System (INIS)

    Markotsis, M.G.; Burford, R.P.; Knott, R.B.; Australian Nuclear Science and Technology Organisation, Menai, NSW; Hanley, T.L.; CRC for Polymers,; Australian Nuclear Science and Technology Organisation, Menai, NSW; Papamanuel, N.

    2003-01-01

    Full text: Interpenetrating polymer networks (IPNs) have been formed by combining two polymeric systems in order to gain enhanced material properties. IPNs are a combination of two or more polymers in network form with one network polymerised and/or crosslinked in the immediate presence of the other(s).1 IPNs allow better blending of two or more crosslinked networks. In this study two sets of IPNs were produced and their microstructure studied using a variety of techniques including small angle neutron scattering (SANS). The first system combined a glassy polymer (polystyrene) with an elastomeric polymer (SBS) with the glassy polymer predominating, to give a high impact plastic. The second set of IPNs contained epichlorohydrin (CO) and nitrile rubber (NBR), and was formed in order to produce novel materials with enhanced chemical and gas barrier properties. In both cases if the phase mixing is optimised the probability of controlled morphologies and synergistic behaviour is increased. The PS/SBS IPNs were prepared using sequential polymerisation. The primary SBS network was thermally crosslinked, then the polystyrene network was polymerised and crosslinked using gamma irradiation to avoid possible thermal degradation of the butadiene segment of the SBS. Tough transparent systems were produced with no apparent thermal degradation of the polybutadiene segments. The epichlorohydrin/nitrile rubber IPNs were formed by simultaneous thermal crosslinking reactions. The epichlorohydrin network was formed using lead based crosslinker, while the nitrile rubber was crosslinked by peroxide methods. The use of two different crosslinking systems was employed in order to achieve independent crosslinking thus resulting in an IPN with minimal grafting between the component networks. SANS, Transmission electron microscopy (TEM), and atomic force microscopy (AFM) were used to examine the size and shape of the phase domains and investigate any variation with crosslinking level and

  10. Uranium deposits at the Jomac mine, White Canyon area, San Juan County, Utah

    Science.gov (United States)

    Trites, A.F.; Hadd, G.A.

    1955-01-01

    The Jomac mine is in the White Canyon area. San Juan County, Utah, about 13 miles northeast of the town of White Canyon, Utah. The mine is owned by the Ellihill Mining Company, White Canyon, Utah. Mine workings consist pf two adits connected by a crosscut. Two hundred feet of exploratory drifting and 2,983.5 feet of exploratory core drilling were completed during 1953 by the owners with Defense Minerals Exploration Administration assistance. Sedimentary rocks exposed in the area of the Jomac mine are of Permian to Late Triassic age, having a combined thickness of more than 1,700 feet. An ancient channel, from 200 to 400 feet wide and about 4 feet deep, enters the mine area from the southwest, swinging abruptly northwest near the mine workings and continuing to the northern tip of the Jomac Hillo This channel was cut into the upper beds of the Moenkopi formation and filled in part by Chinle and in part by Shinarump sediments. This channel is marked by depressions that apparently were scoured into its floor; a tributary channel may have joined it from the southeast at a point near the mine workings. Chinle beds Intertongue with Shinarump beds along the southwestern part of the channel. After the main channel was partly filled by siltstone of the Chinle formation, the stream was apparently diverted into the tributary channel, and scours were cut into

  11. A new stem group echinoid from the Triassic of China leads to a revised macroevolutionary history of echinoids during the end-Permian mass extinction

    Science.gov (United States)

    Thompson, Jeffrey R.; Hu, Shi-xue; Zhang, Qi-Yue; Petsios, Elizabeth; Cotton, Laura J.; Huang, Jin-Yuan; Zhou, Chang-yong; Wen, Wen; Bottjer, David J.

    2018-01-01

    The Permian-Triassic bottleneck has long been thought to have drastically altered the course of echinoid evolution, with the extinction of the entire echinoid stem group having taken place during the end-Permian mass extinction. The Early Triassic fossil record of echinoids is, however, sparse, and new fossils are paving the way for a revised interpretation of the evolutionary history of echinoids during the Permian-Triassic crisis and Early Mesozoic. A new species of echinoid, Yunnanechinus luopingensis n. sp. recovered from the Middle Triassic (Anisian) Luoping Biota fossil Lagerstätte of South China, displays morphologies that are not characteristic of the echinoid crown group. We have used phylogenetic analyses to further demonstrate that Yunnanechinus is not a member of the echinoid crown group. Thus a clade of stem group echinoids survived into the Middle Triassic, enduring the global crisis that characterized the end-Permian and Early Triassic. Therefore, stem group echinoids did not go extinct during the Palaeozoic, as previously thought, and appear to have coexisted with the echinoid crown group for at least 23 million years. Stem group echinoids thus exhibited the Lazarus effect during the latest Permian and Early Triassic, while crown group echinoids did not.

  12. Numerical Methods in Atmospheric and Oceanic Modelling: The Andre J. Robert Memorial Volume

    Science.gov (United States)

    Rosmond, Tom

    Most people, even including some in the scientific community, do not realize how much the weather forecasts they use to guide the activities of their daily lives depend on very complex mathematics and numerical methods that are the basis of modern numerical weather prediction (NWP). André Robert (1929-1993), to whom Numerical Methods in Atmospheric and Oceanic Modelling is dedicated, had a career that contributed greatly to the growth of NWP and the role that the atmospheric computer models of NWP play in our society. There are probably no NWP models running anywhere in the world today that do not use numerical methods introduced by Robert, and those of us who work with and use these models everyday are indebted to him.The first two chapters of the volume are chronicles of Robert's life and career. The first is a 1987 interview by Harold Ritchie, one of Robert's many proteges and colleagues at the Canadian Atmospheric Environment Service. The interview traces Robert's life from his birth in New York to French Canadian parents, to his emigration to Quebec at an early age, his education and early employment, and his rise in stature as one of the preeminent research meteorologists of our time. An amusing anecdote he relates is his impression of weather forecasts while he was considering his first job as a meteorologist in the early 1950s. A newspaper of the time placed the weather forecast and daily horoscope side by side, and Robert regarded each to have a similar scientific basis. Thankfully he soon realized there was a difference between the two, and his subsequent career certainly confirmed the distinction.

  13. Trouble Brewing in San Francisco. Policy Brief

    Science.gov (United States)

    Buck, Stuart

    2010-01-01

    The city of San Francisco will face enormous budgetary pressures from the growing deficits in public pensions, both at a state and local level. In this policy brief, the author estimates that San Francisco faces an aggregate $22.4 billion liability for pensions and retiree health benefits that are underfunded--including $14.1 billion for the city…

  14. San Diego's High School Dropout Crisis

    Science.gov (United States)

    Wilson, James C.

    2012-01-01

    This article highlights San Diego's dropout problem and how much it's costing the city and the state. Most San Diegans do not realize the enormous impact high school dropouts on their city. The California Dropout Research Project, located at the University of California at Santa Barbara, has estimated the lifetime cost of one class or cohort of…

  15. Sr-Nd-Pb isotope systematics of the Permian volcanic rocks in the northern margin of the Alxa Block (the Shalazhashan Belt) and comparisons with the nearby regions: Implications for a Permian rift setting?

    Science.gov (United States)

    Shi, Guanzhong; Wang, Hua; Liu, Entao; Huang, Chuanyan; Zhao, Jianxin; Song, Guangzeng; Liang, Chao

    2018-04-01

    The petrogenesis of the Permian magmatic rocks in the Shalazhashan Belt is helpful for us to understand the tectonic evolution of the Central Asian Orogenic Belt (CAOB) in the northern margin of the Alxa Block. The Permian volcanic rocks in the Shalazhashan Belt include basalts, trachyandesites and trachydacites. Our study shows that two basalt samples have negative εNd(t) values (-5.4 to -1.5) and higher radiogenic Pb values, which are relevant to the ancient subcontinental lithospheric mantle. One basalt sample has positive εNd(t) value (+10) representing mafic juvenile crust and is derived from depleted asthenosphere. The trachyandesites are dated at 284 ± 3 Ma with εNd(t) = +2.7 to +8.0; ISr = 0.7052 to 0.7057, and they are generated by different degrees of mixing between mafic magmas and crustal melts. The trachydacites have high εNd(t) values and slightly higher ISr contents, suggesting the derivation from juvenile sources with crustal contamination. The isotopic comparisons of the Permian magmatic rocks of the Shalazhashan Belt, the Nuru-Langshan Belt (representing the northern margin of the Alxa Block), the Solonker Belt (Mandula area) and the northern margin of the North China Craton (Bayan Obo area) indicate that the radiogenic isotopic compositions have an increasingly evolved trend from the south (the northern margins of the Alxa Block and the North China Craton) to the north (the Shalazhashan Belt and the Solonker Belt). Three end-member components are involved to generate the Permian magmatic rocks: the ancient subcontinental lithospheric mantle, the mafic juvenile crust or newly underplated mafic rocks that were originated from depleted asthenosphere, and the ancient crust. The rocks correlative with the mafic juvenile crust or newly underplated mafic rocks are predominantly distributed along the Shalazhashan Belt and the Solonker Belt, and the rocks derived from ancient, enriched subcontinental lithospheric mantle are mainly distributed along

  16. André Blumel, un itinéraire sioniste à la croisée des chemins

    OpenAIRE

    Lafon, François

    2009-01-01

    Cet article envisage à travers l’itinéraire sioniste d’André Blumel les relations entre la gauche française et l’État d’Israël. Proche de Léon Blum, dont il fut directeur de Cabinet durant le Front populaire, mais se rapprochant progressivement des communistes, Blumel demeura jusqu’en 1966 une figure clefs des milieux sionistes français. Conciliant divers engagements – pourtant apparemment contradictoires – son parcours permet de comprendre la complexité des liens et des conflits qui caractér...

  17. Die Kunst der Projektion. Romantik und Dekonstruktion in den Filmen André Téchinés

    OpenAIRE

    Merlin, Dieter

    2012-01-01

    Thema der vorliegenden Untersuchung sind die Dekonstruktionsmechanismen, mit deren Hilfe metaphysisch begründete Liebeskonzeptionen in den Filmen des französischen Post-Nouvelle-Vague-Regisseurs André Téchiné (geb. 1943) einer kinematographischen Kritik unterworfen werden. Diese Mechanismen werden anhand einer Auswahl von fünf Filmen – HÔTEL DES AMÉRIQUES (1981), LES ROSEAUX SAUVAGES (1994), LES VOLEURS (1996), LOIN (2001) und LES TEMPS QUI CHANGENT (2004) – sowohl unter ästhetisch-formalen a...

  18. Aussteigen (getting out Impossible—Montage and Life Scenarios in Andres Veiel’s Film Black Box BRD

    Directory of Open Access Journals (Sweden)

    Anja Katharina Seiler

    2016-02-01

    Full Text Available Andres Veiel’s 2001 documentary film, Black Box BRD, links the biography of Alfred Herrhausen, RAF victim, with one of the 3rdgeneration RAF terrorists, Wolfgang Grams. In my paper, I trace how the film’s aesthetics introduce an image montage of two life scenarios by establishing both parallels and contrast, and therefore, following Susan Haywards definition “creates a third meaning” (112. I examine how the film establishes an aesthetic concept of Aussteigen (getting out—along of the alive, visible bodies—the contemporary interviewees, and dead, invisible bodies—of Herrhausen and Grams.

  19. Natural gas qualities in the Southern Permian basin; Die Erdgasqualitaeten im suedlichen Permbecken

    Energy Technology Data Exchange (ETDEWEB)

    Gerling, P.; Kockel, F. [BGR, Hannover (Germany); Lokhorst, A.; Geluk, M.C. [TNO, Haarlem (Netherlands); Nicholson, R.A. [British Geological Survey, Nottingham (United Kingdom); Laier, T. [Danmarks og Groenlands Geologiske Undersoegelse, Kopenhagen (Denmark); Pokorski, J. [Panstwowy Instytut Geologiczny, Warsaw (Poland)

    1998-12-31

    There is a substantial amount of molecular and isotopic gas data in the literature but mostly in the archives of companies and geological services. As the geological services of most European countries traditionally contain (confidential and non-confidential) data on geology and resources these institutions from Great Britain, the Netherlands, Denmark, Poland and Germany decided to compile molecular and isotopic natural gas data from the area of the Southern European Permian basin. The partially EU-subsidised project was carried out between 1994 and 1997 (LOKHORST ed. 1998) The atlas is based on existing data and also on newly determined molecular and isotopic gas parameters. Ring analyses of national and international standard gases ensure the quality and comparability of the data thus obtained. The aim of the ``stocktaking`` of natural gas was to describe the gas qualities from the Southern North Sea in the West to the Eastern borders of Poland, to characterise them genetically and to relate the to the geological environment. (orig.) [Deutsch] Ein substantieller Anteil von molekularen und isotopischen Gasdaten existiert, teilweise in der Literatur, vor allem aber in den Archiven der Firmen und der geologischen Dienste. Da die geologischen Dienste der meisten europaeischen Laender traditionell (oeffentliche und vertrauliche) Daten ueber die Geologie und Rohstoffe vorhalten, haben sich diese Institutionen aus Grossbritanien, den Niederlanden, Daenemark, Polen und Deutschlands entschlossen, molekulare und isotopische Erdgasdaten aus dem Bereich des suedlichen europaeischen Permbeckens zu kompilieren. Das partiell von der EU gefoerderte Projekt wurde in den Jahren 1994 bis 1997 durchgefuehrt (LOKHORST ed. 1998). Ausser auf bereits vorhandenen Daten beruht der Atlas auf etwa 200 Neu-Bestimmungen molekularer und isotopischer Gasparameter. Ringanalysen nationaler und internationeler Standardgase gewaehrleisteten die Qualitaet und die Vergleichbarkeit der gewonnenen

  20. Formation of phreatomagmatic pipes in the Tunguska Basin (Siberia, Russia) during the end-Permian

    Science.gov (United States)

    Polozov, Alexander; Svensen, Henrik; Planke, Sverre

    2010-05-01

    We recently proposed that numerous pipes piercing sedimentary rocks of Tunguska Basin triggered the Permian-Triassic mass extinction (Svensen et al., 2009). Large amounts of greenhouse and poisonous gases were released through the pipes and into P-Tr atmosphere, partly formed by heating of petroleum-bearing evaporites. The sub-volcanic part of the Siberian Traps was emplaced in the Tunguska Basin sedimentary sequences, which includes Pre-Cambrian source rocks, Early Cambrian evaporites, and Paleozoic terrigenous and coal-bearing rocks. Spectacular breccia pipes are numerous in the evaporate-parts of the basin, and are filled with volcaniclastic rocks and commercial magnetite mineralization. Although these pipes have been intensively studied in order to understand the iron ore formation, the origin and formation of the pipes is poorly understood. Many researchers emphasize that magma-sediments interaction as a key reason of pipe formation, whereas phreatomagmatic hypothesis are also proposed. In order to improve the understanding of pipe formation and ore-deposition, we have studied a basalt-rich breccia pipe piercing Cambrian evaporates at the Nepa locality in East Siberia. Textural features of the volcanic fragments in the breccias include lapilli, Pele's hear, glassy basalt and dolerite clasts, blocks of tuffs in addition to sedimentary rocks. Calcite and halite are the most common types of cement. We have studied minerals from the breccia cement and from reaction rims around clasts in order to understand the hydrothermal system that developed after the pipe formed. Calcite and dolomite are the dominating carbonates, and two types of anhydrite is present. Biotite, Cl-Fe-bearing amphibole (hastingsite), and Cl-F-apatite are amongst early hydrothermal minerals covering magmatic clast and lapillies. Our new data confirm (i) the phreatomagmatic nature of breccia filling in the Tunguska Basin pipes and (ii) the key role of sedimentary brine and petroleum involved in

  1. Lithofacies palaeogeography of the Upper Permian Changxing Stage in the Middle and Upper Yangtze Region, China

    Directory of Open Access Journals (Sweden)

    He Youbin

    2013-04-01

    Full Text Available Based on the petrological study, according to single factor analysis and multifactor comprehensive mapping method, the quantitative lithofacies palaeogeography of the Upper Permian Changxing Stage of the Middle and Upper Yangtze Region was studied. The Changxing Stage in the Middle and Upper Yangtze Region is mainly composed of carbonate rocks; in addition, clastic and siliceous rocks occur with rare coals and pyroclastic rocks. Lithofacies can be divided into five types, including clastic rock assemblage, clastic rock–limestone assemblage, limestone assemblage, limestone–siliceous rock assemblage, and siliceous rock–clastic rock assemblage. Four fundamental ecological types and five fossil assemblages were recognized in the Changxing Stage. On the basis of the petrological and palaeoecological study, eight single factors were chosen including thickness, content of marine rocks, content of shallow water carbonate rocks, content of bioclasts with limemud matrix, content of bioclasts with sparry cement, distribution of reefs, content of thin bedded siliceous rocks and content of deep water sedimentary rocks. And eight single factor maps and one lithofacies paleogeographic map of the Changxing Stage were compiled. Paleoenvironments from west to east include an erosional area, fluvial plain, clastic platform, carbonate platform and reefs that developed there, slope and basin, low energy organic banks, and high energy organic banks. Sedimentary environments have an obvious control on the development of the source rocks, and the excellent source rocks are developed in the Dalong Formation. Changxing Stage reservoirs should be dominated by the reef and platform surrounding the Guangyuan–Liangping Basin rim area, and is the most favorable exploration area of the reef petroleum reservoirs of the Changxing Formation.

  2. Revision of the Late Permian Non-Marine Bivalve Genus Verneuilunio Starobogatov, 1987

    Directory of Open Access Journals (Sweden)

    M.N. Urazaeva

    2015-03-01

    Full Text Available The genus Verneuilunio (type species Naiadites verneuili has been singled out from the genus Palaeanodonta Amalitzky based on differences in the structure of hinge margin established using the literature data. Both genera have been included in the family Palaeanodontidae, which used to be considered by the discoverer of this genus as a subjective synonym for the family Palaeomutelidae. The revision of W. Amalitskii’s collection has demonstrated that the original diagnosis of the genus con-tains a number of inaccuracies. This creates difficulties for identification of the genus Verneuilunio and complicates its placement within higher taxa. The paper presents a revised diagnosis of the genus Verneuilunio. The detailed description of its type species is provided. The genus Verneuilunio has been assigned to the family Naiaditidae based on the duplivincular and slightly amphidetic ligament. According to this feature, the genus under study is significantly different from other unio-like Late Permian non-marine bivalve genera (Palaeomutela, Palaeanodonta, Oligodontella, and Opokiella, often occurring in the same strata. The genus Verneuilunio mostly resembles some Late Carboniferous “atypical” unio-like species of the genus Anthraconaia Trueman et Weir. Statistical processing of the biometric parameters of Verneuilunio verneuili and the species A. pruvosti, mostly resembling it, has revealed statistically significant differences in elongation of the posterior end of the shell. To date, the geographic range of the genus Verneuilunio is restricted to the central part of the East European Platform, whereas its stratigraphic range is in the lower sublayer of the Severodvinsk layer.

  3. Composition of fluid inclusions in Permian salt beds, Palo Duro Basin, Texas, U.S.A.

    Science.gov (United States)

    Roedder, E.; d'Angelo, W. M.; Dorrzapf, A.F.; Aruscavage, P. J.

    1987-01-01

    Several methods have been developed and used to extract and chemically analyze the two major types of fluid inclusions in bedded salt from the Palo Duro Basin, Texas. Data on the ratio K: Ca: Mg were obtained on a few of the clouds of tiny inclusions in "chevron" salt, representing the brines from which the salt originally crystallized. Much more complete quantitative data (Na, K, Ca, Mg, Sr, Cl, SO4 and Br) were obtained on ??? 120 individual "large" (mostly ???500 ??m on an edge, i.e., ??? ??? 1.6 ?? 10-4 g) inclusions in recrystallized salt. These latter fluids have a wide range of compositions, even in a given piece of core, indicating that fluids of grossly different composition were present in these salt beds during the several (?) stages of recrystallization. The analytical results indicating very large inter-and intra-sample chemical variation verify the conclusion reached earlier, from petrography and microthermometry, that the inclusion fluids in salt and their solutes are generally polygenetic. The diversity in composition stems from the combination of a variety of sources for the fluids (Permian sea, meteoric, and groundwater, as well as later migrating ground-, formation, or meteoric waters of unknown age), and a variety of subsequent geochemical processes of dissolution, precipitation and rock-water interaction. The compositional data are frequently ambiguous but do provide constraints and may eventually yield a coherent history of the events that produced these beds. Such an understanding of the past history of the evaporite sequence of the Palo Duro Basin should help in predicting the future role of the fluids in the salt if a nuclear waste repository is sited there. ?? 1987.

  4. Body size reductions in nonmammalian eutheriodont therapsids (Synapsida during the end-Permian mass extinction.

    Directory of Open Access Journals (Sweden)

    Adam K Huttenlocker

    Full Text Available The extent to which mass extinctions influence body size evolution in major tetrapod clades is inadequately understood. For example, the 'Lilliput effect,' a common feature of mass extinctions, describes a temporary decrease in body sizes of survivor taxa in post-extinction faunas. However, its signature on existing patterns of body size evolution in tetrapods and the persistence of its impacts during post-extinction recoveries are virtually unknown, and rarely compared in both geologic and phylogenetic contexts. Here, I evaluate temporal and phylogenetic distributions of body size in Permo-Triassic therocephalian and cynodont therapsids (eutheriodonts using a museum collections-based approach and time series model fitting on a regional stratigraphic sequence from the Karoo Basin, South Africa. I further employed rank order correlation tests on global age and clade rank data from an expanded phylogenetic dataset, and performed evolutionary model testing using Brownian (passive diffusion models. Results support significant size reductions in the immediate aftermath of the end-Permian mass extinction (ca. 252.3 Ma consistent with some definitions of Lilliput effects. However, this temporal succession reflects a pattern that was underscored largely by Brownian processes and constructive selectivity. Results also support two recent contentions about body size evolution and mass extinctions: 1 active, directional evolution in size traits is rare over macroevolutionary time scales and 2 geologically brief size reductions may be accomplished by the ecological removal of large-bodied species without rapid originations of new small-bodied clades or shifts from long-term evolutionary patterns.

  5. Thermal properties of Permian Basin evaporites to 493 K and 30 MPa confining pressure

    International Nuclear Information System (INIS)

    Durham, W.B.; Heard, H.C.; Boro, C.O.; Keller, K.T.; Ralph, W.E.; Trimmer, D.A.

    1987-01-01

    Laboratory measurements have been made of the thermal conductivity and diffusivity of four rock salts, two anhydrites, and two dolomites bordering the Cycle 4 and Cycle 5 bedded salt formations in the Permian Basin in Deaf Smith County, Texas. Measurement conditions ranged from 303 to 473 K in temperature, and 0.1 to 31.0 MPa in hydrostatic confining pressure. Within the +-5% measurement resolution neither conductivity nor diffusivity showed a dependence upon pressure in any of the rocks. Conductivity and diffusivity in all rocks had a negative temperature dependence. For the two Cycle 4 salt samples, conductivity over the temperature range explored fell from 5.5 to 3.75 W/m.K, and diffusivity fell from about 2.7 to 1.7 x 10 -6 m 2 /s. One of the Cycle 5 salts was a single crystal which had anomalous results, but the other had a low conductivity, about 3.4 W/m.K, with very weak temperature dependence, and a high diffusivity, 3.8 to 2.5 x 10 -6 m 2 /s over the temperature range. In the nonsalts, conductivity and diffusivity decreased 10 to 20% over the temperature range explored, which was 308 -6 m 2 /s for the anhydrites and 1.4 x 10 -6 m 2 /s for both the dolomites. The coefficient of thermal linear expansion was measured for the Cycle 5 salt and nonsalts over 308 -6 K -1 at P = 3.0 MPa to 4 x 10 -6 K -1 at P = 30 MPa for both nonsalt rocks. In anhydrite, it decreased with increasing temperature at a rate of roughly 5 x 10 -8 K -2 at all pressures. In dolomite, the coefficient increased at roughly the same rate. Expansion of the salt ranged from 33 to 38 x 10 -6 K -1 and was independent of pressure and temperature

  6. Body Size Reductions in Nonmammalian Eutheriodont Therapsids (Synapsida) during the End-Permian Mass Extinction

    Science.gov (United States)

    Huttenlocker, Adam K.

    2014-01-01

    The extent to which mass extinctions influence body size evolution in major tetrapod clades is inadequately understood. For example, the ‘Lilliput effect,’ a common feature of mass extinctions, describes a temporary decrease in body sizes of survivor taxa in post-extinction faunas. However, its signature on existing patterns of body size evolution in tetrapods and the persistence of its impacts during post-extinction recoveries are virtually unknown, and rarely compared in both geologic and phylogenetic contexts. Here, I evaluate temporal and phylogenetic distributions of body size in Permo-Triassic therocephalian and cynodont therapsids (eutheriodonts) using a museum collections-based approach and time series model fitting on a regional stratigraphic sequence from the Karoo Basin, South Africa. I further employed rank order correlation tests on global age and clade rank data from an expanded phylogenetic dataset, and performed evolutionary model testing using Brownian (passive diffusion) models. Results support significant size reductions in the immediate aftermath of the end-Permian mass extinction (ca. 252.3 Ma) consistent with some definitions of Lilliput effects. However, this temporal succession reflects a pattern that was underscored largely by Brownian processes and constructive selectivity. Results also support two recent contentions about body size evolution and mass extinctions: 1) active, directional evolution in size traits is rare over macroevolutionary time scales and 2) geologically brief size reductions may be accomplished by the ecological removal of large-bodied species without rapid originations of new small-bodied clades or shifts from long-term evolutionary patterns. PMID:24498335

  7. Coastal dune facies, Permian Cutler Formation (White Rim Sandstone), Capitol Reef National Park area, southern Utah

    Science.gov (United States)

    Kamola, Diane L.; Chan, Marjorie A.

    1988-04-01

    The Permian Cutler Formation (White Rim Sandstone) in the Capitol Reef National Park area in southern Utah is an excellent example of a coastal dune complex subjected to periodic flooding by marine waters. Wind-ripple, grainfall and grainflow laminae compose the cross-sets deposited by eolian dunes. However, wave-reworked structures such as oscillation ripples, the occurrence of the characteristically marine trace fossils Thalassinoides and Chondrites, and interfingering marine carbonate beds of the Kaibab Formation collectively indicate marine interaction with the eolian environment. Four facies are distinguished: cross-stratified sandstone, burrowed to bioturbated sandstone, brecciated and deformed sandstone, and ripple-laminated sandstone and thin carbonate beds. One unusual aspect of the cross-stratified sandstone facies is the abundance of coarse-grained sand. Coarse-grained sand is atypical in many ancient eolian slipface deposits, but occurs here in large slipface foresets as both grainflow and wind-ripple deposits. No water-laid structures are found in these slipface deposits. Coarse-grained sand was probably transported to the Cutler shoreline by fluvial systems draining the Uncompahgre Uplift to the east, and then concentrated as coarse-grained ripples in interdune areas. Some of these coarse-grained ripples migrated up the stoss side of the dunes and accumulations of coarse-grained sand avalanched down the crest to form grainflow deposits. An extensive amount of soft-sediment deformation is indicated by the presence of convolute bedding and brecciation. These features occur near the zone of interfingering with marine carbonate beds of the Kaibab Formation. The water-saturated and moist conditions required for extensive deformation may have been controlled by the proximity of these sandstones to the shoreline, and fluctuations in the associated groundwater table.

  8. High precision time calibration of the Permian-Triassic boundary mass extinction event in a deep marine context

    Science.gov (United States)

    Baresel, Björn; Bucher, Hugo; Brosse, Morgane; Bagherpour, Borhan; Schaltegger, Urs

    2015-04-01

    To construct a revised and high resolution calibrated time scale for the Permian-Triassic boundary (PTB) we use (1) high-precision U-Pb zircon age determinations of a unique succession of volcanic ash layers interbedded with deep water fossiliferous sediments in the Nanpanjiang Basin (South China) combined with (2) accurate quantitative biochronology based on ammonoids, conodonts, radiolarians, and foraminifera and (3) tracers of marine bioproductivity (carbon isotopes) across the PTB. The unprecedented precision of the single grain chemical abrasion isotope-dilution thermal ionization mass spectrometry (CA-ID-TIMS) dating technique at sub-per mil level (radio-isotopic calibration of the PTB at the groups of processes. Using these alignments allows (1) positioning the PTB in different depositional setting and (2) solving the age contradictions generated by the misleading use of the first occurrence (FO) of the conodont Hindeodus parvus, whose diachronous first occurrences are arbitrarily used for placing the base of the Triassic. This new age framework provides the basis for a combined calibration of chemostratigraphic records with high-resolution biochronozones of the Late Permian and Early Triassic. Here, we present new single grain U-Pb zircon data of volcanic ash layers from two deep marine sections (Dongpan and Penglaitan) revealing stratigraphic consistent dates over several volcanic ash layers bracketing the PTB. These analyses define weighted mean 206Pb/238U ages of 251.956±0.033 Ma (Dongpan) and 252.062±0.043 Ma (Penglaitan) for the last Permian ash bed. By calibration with detailed litho- and biostratigraphy new U-Pb ages of 251.953±0.038 Ma (Dongpan) and 251.907±0.033 Ma (Penglaitan) are established for the onset of the Triassic.

  9. A high resolution magnetostratigraphic profile across the Permian-Triassic boundary in the Southern Sydney Basin, eastern Australia

    Science.gov (United States)

    Belica, M. E.; Tohver, E.; Nicoll, R.; Denyszyn, S. W.; Pisarevsky, S.; George, A. D.

    2016-12-01

    The Permian-Triassic boundary (PTB) is associated with the largest mass extinction in Phanerozoic geologic history. Despite several decades of intense study, there is ongoing debate regarding the exact timing of extinction and the global correlation of marine and terrestrial P-T sections. The terrestrial record is hampered by a lack of index fossils; however, magnetostratigraphy offers an opportunity for correlation because it relies on the global synchronicity of magnetic reversals. A magnetostratigraphic profile across the Permian-Triassic boundary has been obtained from a stratigraphically continuous terrestrial section in the Southern Sydney Basin of eastern Australia. The 60 m section is located within the Narrabeen Group, which consists of fluvial to lacustrine sandstones and mudstones. Paleomagnetic samples were collected at one meter intervals to determine a detailed reversal record. Samples were stepwise thermally demagnetized to isolate a primary remanence, and magnetic susceptibility was measured in the field at 30 cm intervals with values ranging from -0.047-2.50 (10-3 SI units). Three normal and three reverse magnetozones were detected after removal of a low temperature overprint, and the results show good agreement with the Global Magnetic Polarity Timescale as well as marine Permian-Triassic sections where the PTB is well constrained. Furthermore, a reverse polarity subchron has been identified within the normal magnetozone spanning the PTB similar to results published from the Netherlands and China. The magnetic stratigraphy suggests that the Narrabeen Group was deposited during the late Changhsingian to early Induan, and provides a revised placement of the PTB in the lower Wombarra Claystone. Integration of the magnetostratigraphy with existing isotopic datasets suggests that the terrestrial extinction in eastern Australia occurred 7.5 m below the PTB in the Changhsingian Coalcliff Sandstone. A tuff within a coal seam underlying the Coalcliff

  10. Astronomical tuning of the end-Permian extinction and the Early Triassic Epoch of South China and Germany

    Science.gov (United States)

    Li, Mingsong; Ogg, James; Zhang, Yang; Huang, Chunju; Hinnov, Linda; Chen, Zhong-Qiang; Zou, Zhuoyan

    2016-05-01

    The timing of the end-Permian mass extinction and subsequent prolonged recovery during the Early Triassic Epoch can be established from astronomically controlled climate cycles recorded in continuous marine sedimentary sections. Astronomical-cycle tuning of spectral gamma-ray logs from biostratigraphically-constrained cyclic stratigraphy through marine sections at Meishan, Chaohu, Daxiakou and Guandao in South China yields an integrated time scale for the Early Triassic, which is consistent with scaling of magnetostratigraphy from climatic cycles in continental deposits of the Germanic Basin. The main marine mass extinction interval at Meishan is constrained to less than 40% of a 100-kyr (kilo-year) cycle (i.e., marine reptiles in the Mesozoic at Chaohu that are considered to represent a significant recovery of marine ecosystems did not appear until 4.7 myr (million years) after the end-Permian extinction. The durations of the Griesbachian, Dienerian, Smithian and Spathian substages, including the uncertainty in placement of widely used conodont biostratigraphic datums for their boundaries, are 1.4 ± 0.1, 0.6 ± 0.1, 1.7 ± 0.1 and 1.4 ± 0.1 myr, implying a total span for the Early Triassic of 5.1 ± 0.1 myr. Therefore, relative to an assigned 251.902 ± 0.024 Ma for the Permian-Triassic boundary from the Meishan GSSP, the ages for these substage boundaries are 250.5 ± 0.1 Ma for base Dienerian, 249.9 ± 0.1 Ma for base Smithian (base of Olenekian stage), 248.2 ± 0.1 Ma for base Spathian, and 246.8 ± 0.1 Ma for the base of the Anisian Stage. This astronomical-calibrated timescale provides rates for the recurrent carbon isotope excursions and for trends in sedimentation accumulation through the Early Triassic of studied sections in South China.

  11. Early Triassic alternative ecological states driven by anoxia, hyperthermals, and erosional pulses following the end-Permian mass extinction

    Science.gov (United States)

    Pietsch, C.; Petsios, E.; Bottjer, D. J.

    2015-12-01

    The end-Permian mass extinction, 252 million years ago, was the most devastating loss of biodiversity in Earth's history. Massive volcanic eruptions of the Siberian Traps and the concurrent burning of coal, carbonate, and evaporite deposits emplaced greenhouse and toxic gasses. Hyperthermal events of the surface ocean, up to 40°C, led to reduced gradient-driven ocean circulation which yielded extensive equatorial oxygen minimum zones. Today, anthropogenic greenhouse gas production is outpacing carbon input modeled for the end-Permian mass extinction, which suggests that modern ecosystems may yet experience a severe biotic crisis. The Early Triassic records the 5 million year aftermath of the end-Permian mass extinction and is often perceived as an interval of delayed recovery. We combined a new, high resolution carbon isotope record, sedimentological analysis, and paleoecological collections from the Italian Werfen Formation to fully integrate paleoenvironmental change with the benthic ecological response. We find that the marine ecosystem experienced additional community restructuring events due to subsequent hyperthermal events and pulses of erosion. The benthic microfauna and macrofauna both contributed to disaster communities that initially rebounded in the earliest Triassic. 'Disaster fauna' including microbialites, microconchids, foraminifera, and "flat clams" took advantage of anoxic conditions in the first ~500,000 years, dominating the benthic fauna. Later, in the re-oxygenated water column, opportunistic disaster groups were supplanted by a more diverse, mollusc-dominated benthic fauna and a complex ichnofauna. An extreme temperature run-up beginning in the Late Dienerian led to an additional hyperthermal event in the Late-Smithian which co-occurred with increased humidity and terrestrial run-off. Massive siliciclastic deposits replaced carbonate deposition which corresponds to the infaunalization of the benthic fauna. The disaster taxa dominated

  12. The Tunas Formation (Permian) in the Sierras Australes foldbelt, east central Argentina: evidence for syntectonic sedimentation in a foreland basin

    Science.gov (United States)

    Lopez-Gamundi, O. R.; Conaghan, P. J.; Rossello, E. A.; Cobbold, P. R.

    1995-04-01

    The Tunas Formation, extensively exposed in the Sierras Australes foldbelt of eastern central Argentina, completes the sedimentation of the Gondwanan (Late Carboniferous-Permian) sequence, locally known as the Pillahuincó Group. The underlying units of the Group show an integrated depositional history which can be explained in terms of glaciomarine sedimentation (Sauce Grande Formation) and postglacial transgression (Piedra Azul and Bonete Formations). This succession also has a rather uniform quartz-rich, sand-sized composition indicative of a cratonic provenance from the Tandilia Massif to the northeast. Early to Late Permian deformation folded and thrusted the southwestern basin margin (Sierras Australes) and triggered the deposition of a 1,500 m — thick, synorogenic prograding wedge, the Tunas Formation, in the adjacent foreland basin (Sauce Grande or Claromecó Basin). Sandstone detrital modes for the Tunas deposits show moderate to low contents of quartz and abundant lithics, mostly of volcanic and metasedimentary origin. Paleocurrents are consistently from the SW. Tuffs interbedded with sandstones in the upper half of Tunas Formation (Early — early Late? Permian) are interpreted as being derived from volcanic glass-rich tuffs settled in a body of water. Extensive rhyolitic ignimbrites and consanguineous airborne tuffaceous material erupted in the northern Patagonian region during that period. The age constraints and similarities in composition between these volcanics and the tuffaceous horizons present in the Sauce Grande, Parana and Karoo Basins suggest a genetic linkage between these two episodes. The intimate relationship between volcanic activity inboard of the paleo-Pacific margin, deformation in the adjacent orogenic belt and subsidence and sedimentation in the contiguous foreland basin constitutes a common motif in the Sauce Grande and Karoo Basins of southwestern Gondwana.

  13. Source and Extent of Volcanic Ashes at the Permian-Triassic Boundary in South China and Its implications

    Science.gov (United States)

    Wang, M.; Zhong, Y. T.; Hou, Y. L.; He, B.

    2017-12-01

    Highly correlated with the Permian-Triassic Boundary (PTB) Mass Extinction in stratigraphic section, volcanic ashes around the P-T Boundary in South China have been suggested to be a likely cause of the PTB Mass Extinction. So the nature, source and extent of these volcanic ashes have great significance in figuring out the cause of the PTB Mass Extinction. In this study, we attempt to constrain the source and extent of the PTB volcanic ashes in South China by studying pyroclastic sedimentary rocks and the spatial distribution of tuffs and ashes in South China. The detrital zircons of tuffaceous sandstones from Penglaitan section yield an age spectrum peaked at 252Ma, with ɛHf(t) values varying from -20 to -5 ,and have Nb/Hf, Th/Nb and Hf/Th ratios similar to those from arc/orogenic-related settings. Coarse tuffaceous sandstones imply that their source is in limited distance. Those pyroclastic sedimentary rocks in Penglaitan are well correlated with the PTB volcanic ashes in Meishan GSSP section in stratigraphy. In the spatial distribution, pyroclastic sedimentary rocks and tuffs distribute only in southwest of South China, while finer volcanic ashes are mainly in the northern part. This spatial distribution suggests the source of tuffs and ashes was to the south or southwest of South China. Former studies especially that of Permian-Triassic magmatism in Hainan Island have supported the existence of a continental arc related to the subduction and closure of Palaeo-Tethys on the southwestern margin of South China during Permian to early Triassic. It is suggested that the PTB ashes possibly derived from this Paleo-Tethys continental arc. The fact that volcanic ashes haven't been reported or found in PTB stratum in North China or Northwest China implies a limited extent of the volcanism, which thus is too small to cause the PTB mass extinction.

  14. Bringing Dicynodonts Back to Life: Paleobiology and Anatomy of a New Emydopoid Genus from the Upper Permian of Mozambique

    Science.gov (United States)

    Júnior, Luís C.; Angielczyk, Kenneth D.; Martins, Gabriel G.; Martins, Rui M. S.; Chaouiya, Claudine; Beckmann, Felix; Wilde, Fabian

    2013-01-01

    Dicynodontia represent the most diverse tetrapod group during the Late Permian. They survived the Permo-Triassic extinction and are central to understanding Permo-Triassic terrestrial ecosystems. Although extensively studied, several aspects of dicynodont paleobiology such as, neuroanatomy, inner ear morphology and internal cranial anatomy remain obscure. Here we describe a new dicynodont (Therapsida, Anomodontia) from northern Mozambique: Niassodon mfumukasi gen. et sp. nov. The holotype ML1620 was collected from the Late Permian K5 formation, Metangula Graben, Niassa Province northern Mozambique, an almost completely unexplored basin and country for vertebrate paleontology. Synchrotron radiation based micro-computed tomography (SRµCT), combined with a phylogenetic analysis, demonstrates a set of characters shared with Emydopoidea. All individual bones were digitally segmented allowing a 3D visualization of each element. In addition, we reconstructed the osseous labyrinth, endocast, cranial nerves and vasculature. The brain is narrow and the cerebellum is broader than the forebrain, resembling the conservative, “reptilian-grade” morphology of other non-mammalian therapsids, but the enlarged paraflocculi occupy the same relative volume as in birds. The orientation of the horizontal semicircular canals indicates a slightly more dorsally tilted head posture than previously assumed in other dicynodonts. In addition, synchrotron data shows a secondary center of ossification in the femur. Thus ML1620 represents, to our knowledge, the oldest fossil evidence of a secondary center of ossification, pushing back the evolutionary origins of this feature. The fact that the specimen represents a new species indicates that the Late Permian tetrapod fauna of east Africa is still incompletely known. PMID:24324653

  15. Bringing dicynodonts back to life: paleobiology and anatomy of a new emydopoid genus from the Upper Permian of Mozambique.

    Directory of Open Access Journals (Sweden)

    Rui Castanhinha

    Full Text Available Dicynodontia represent the most diverse tetrapod group during the Late Permian. They survived the Permo-Triassic extinction and are central to understanding Permo-Triassic terrestrial ecosystems. Although extensively studied, several aspects of dicynodont paleobiology such as, neuroanatomy, inner ear morphology and internal cranial anatomy remain obscure. Here we describe a new dicynodont (Therapsida, Anomodontia from northern Mozambique: Niassodon mfumukasi gen. et sp. nov. The holotype ML1620 was collected from the Late Permian K5 formation, Metangula Graben, Niassa Province northern Mozambique, an almost completely unexplored basin and country for vertebrate paleontology. Synchrotron radiation based micro-computed tomography (SRµCT, combined with a phylogenetic analysis, demonstrates a set of characters shared with Emydopoidea. All individual bones were digitally segmented allowing a 3D visualization of each element. In addition, we reconstructed the osseous labyrinth, endocast, cranial nerves and vasculature. The brain is narrow and the cerebellum is broader than the forebrain, resembling the conservative, "reptilian-grade" morphology of other non-mammalian therapsids, but the enlarged paraflocculi occupy the same relative volume as in birds. The orientation of the horizontal semicircular canals indicates a slightly more dorsally tilted head posture than previously assumed in other dicynodonts. In addition, synchrotron data shows a secondary center of ossification in the femur. Thus ML1620 represents, to our knowledge, the oldest fossil evidence of a secondary center of ossification, pushing back the evolutionary origins of this feature. The fact that the specimen represents a new species indicates that the Late Permian tetrapod fauna of east Africa is still incompletely known.

  16. Indústria, ordenamento do território e transportes – a contribuição de André Fischer

    Directory of Open Access Journals (Sweden)

    Áurea Breitbach

    2009-03-01

    Full Text Available Indústria, ordenamento do território e transportes – a contribuição de André Fischer, Organização Olga Lúcia C. Firkowski e Eliseu S. Sposito, Editora Expressão Popular, 2008, 160 p.Este livro é uma iniciativa conjunta dos Programas de Pós-Graduação em Geografia da Universidade Federal do Paraná e da Universidade Estadual Paulista/Presidente Prudente. Conforme os organizadores, a intenção foi publicar um livro que homenageasse André Fischer e, para tanto, foram reunidos diversos textos escrit...

  17. Carboniferous - Early Permian magmatic evolution of the Bogda Range (Xinjiang, NW China): Implications for the Late Paleozoic accretionary tectonics of the SW Central Asian Orogenic Belt

    Science.gov (United States)

    Wali, Guzalnur; Wang, Bo; Cluzel, Dominique; Zhong, Linglin

    2018-03-01

    The Late Paleozoic magmatic evolution of the Bogda Range (Chinese North Tianshan) is important for understanding the accretionary history of the Central Asian Orogenic Belt. We investigated the Carboniferous and Lower Permian volcanic and sedimentary sequences of the Daheyan section, southern Bogda Range, and present new zircon U-Pb ages and whole-rock geochemical data for the volcanic rocks. One Carboniferous rhyolite is dated at 298 ± 8 Ma; a Permian basalt yielded many Proterozoic zircon xenocrysts, and its maximum age (∼297 Ma) is constrained by the detrital zircon ages of the sandstone that stratigraphically underlies it. These volcanic rocks belong to calc-alkaline series. We further synthesize previous geochronological, geochemical and isotopic data of magmatic and sedimentary rocks in the Bogda Range. The available data indicate that the magmatism occurred continuously from 350 Ma to 280 Ma. A comprehensive analysis allows us to propose that: (1) the Carboniferous to Early Permian magmatic rocks of the Bogda Range generally show consistent arc-type features; (2) increasing mantle input through time suggests intra-arc extension in a supra-subduction zone; (3) the localized occurrence of Early Permian alkaline pillow basalts and deep water sediments close to the major shear zone advocate a transtensional crustal thinning during the transition from Carboniferous convergence to Early Permian transcurrent tectonics; (4) occurrence of a large number of Proterozoic zircon xenocrysts in the Late Paleozoic magmatic rocks, and Proterozoic detrital zircons in the coeval clastic sediments suggest a continental or transitional basement of the Bogda Arc; (5) subduction in the Bogda area terminated prior to the deposition of Middle Permian terrestrial sediments.

  18. Evidence for Late Permian-Upper Triassic ocean acidification from calcium isotopes in carbonate of the Kamura section in Japan

    Science.gov (United States)

    Ye, F.; Zhao, L., Sr.; Chen, Z. Q.; Wang, X.

    2017-12-01

    Calcium and carbon cycles are tightly related in the ocean, for example, through continental weathering and deposition of carbonate, thus, very important for exploring evolutions of marine environment during the earth history. The end-Permian mass extinction is the biggest biological disaster in the Phanerozoic and there are several studies talking about variations of calcium isotopes across the Permian-Triassic boundary (PTB). However, these studies are all from the Tethys regions (Payne et al., 2010; Hinojosa et al., 2012), while the Panthalassic Ocean is still unknown to people. Moreover, evolutions of the calcium isotopes during the Early to Late Triassic is also poorly studied (Blattler et al., 2012). Here, we studied an Uppermost Permian to Upper Triassic shallow water successions (Kamura section, Southwest Japan) in the Central Panthalassic Ocean. The Kamura section is far away from the continent without any clastic pollution, therefore, could preserved reliable δ44/40Cacarb signals. Conodont zonation and carbonate carbon isotope also provide precious time framework which is necessary for the explaining of the δ44/40Cacarb profile. In Kamura, δ44/40Cacarb and δ13Ccarb both exhibit negative excursions across the PTB, the δ44/40Cacarb value in the end-Permian is 1.0398‰ then abrupt decrease to the minimum value of 0.1524‰. CO2-driven global ocean acidification best explains the coincidence of the δ44/40Cacarb excursion with negative excursions in the δ13Ccarb of carbonates until the Early Smithian(N1a, N1b, N1c, P1, N2, P2). In the Middle and the Late Triassic, the δ44/40 Cacarb average approximately 1.1‰. During the Middle and Late Triassic, strong relationships between δ44/40Cacarb and δ13Ccarb are collapsed, indicating a normal pH values of the seawater in those time. The Siberian Trap volcanism probably played a significant role on the δ44/40Cacarb until the late Early Triassic. After that, δ44/40Cacarb was mostly controlled by carbonate

  19. Timing of global regression and microbial bloom linked with the Permian-Triassic boundary mass extinction: implications for driving mechanisms

    Science.gov (United States)

    Baresel, Bjoern; Bucher, Hugo; Bagherpour, Borhan; Brosse, Morgane; Guodun, Kuang; Schaltegger, Urs

    2017-04-01

    High-precision U-Pb dating of single-zircon crystals by chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-ID-TIMS) is applied to volcanic beds that are intercalated in sedimentary sequences across the Permian-Triassic boundary (PTB). By assuming that the zircon crystallization age closely approximate that of the volcanic eruption and subsequent deposition, U-Pb zircon geochronology is the preferred approach for dating abiotic and biotic events, such as the formational PTB and the Permian-Triassic boundary mass extinction (PTBME). We will present new U-Pb zircon dates for a series of volcanic ash beds in shallow-marine Permian-Triassic sections in the Nanpanjiang Basin, South China. These high-resolution U-Pb dates indicate a duration of 90 ± 38 kyr for the Permian sedimentary hiatus and a duration of 13 ± 57 kyr for the overlying Triassic microbial limestone in the shallow water settings of the Nanpanjiang pull apart Basin. The age and duration of the hiatus coincides with the formational PTB and the extinction interval in the Meishan Global Stratotype Section and Point, thus strongly supporting a glacio-eustatic regression, which best explains the genesis of the worldwide hiatus straddling the PTB in shallow water records. In adjacent deep marine troughs, rates of sediment accumulation display a six-fold decrease across the PTB compatible with a dryer and cooler climate during the Griesbachian as indicated by terrestrial plants. Our model of the PTBME hinges on the synchronicity of the hiatus with the onset of the Siberian Traps volcanism. This early eruptive phase likely released sulfur-rich volatiles into the stratosphere, thus simultaneously eliciting a short-lived ice age responsible for the global regression and a brief but intense acidification. Abrupt cooling, shrunk habitats on shelves and acidification may all have synergistically triggered the PTBME. Subsequently, the build-up of volcanic CO2 induced this transient cool

  20. The present is not the key to the past: A polar forest from the Permian of Antarctica

    International Nuclear Information System (INIS)

    Taylor, E.L.; Taylor, T.N.; Cuneo, N.R.

    1992-01-01

    An in situ Upper Permian fossil forest in the central Transantarctic Mountains near the Beardmore Glacier includes 15 permineralized trunks in growth position; the paleolatitude of the site was approximately 80 degree to 85 degree south. Numerous leaves of the seed fern Glossopteris are present in the shale in which the trunks are rooted. The trunks are permineralized and tree rings reveal that the forest was a rapidly growing and young forest, persisting in an equable, strongly seasonal climate - a scenario that does not fit with some climate reconstructions for this time period

  1. Boron isotopes in brachiopods during the end-Permian mass extinction: constraints on pH evolution and seawater chemistry

    Science.gov (United States)

    Jurikova, Hana; Gutjahr, Marcus; Liebetrau, Volker; Brand, Uwe; Posenato, Renato; Garbelli, Claudio; Angiolini, Lucia; Eisenhauer, Anton

    2017-04-01

    The global biogeochemical cycling of carbon is fundamental for life on Earth with the ocean playing a key role as the largest and dynamically evolving CO2 reservoir. The boron isotope composition (commonly expressed in δ11B) of marine calcium carbonate is considered to be one of the most reliable paleo-pH proxies, potentially enabling us to reconstruct past ocean pH changes and understand carbon cycle perturbations along Earth's geological record (e.g. Foster et al., 2008; Clarkson et al., 2015). Brachiopods present an advantageous and largely underutilised archive for Phanerozoic carbon cycle reconstructions considering their high abundance in the geological record and its origin dating back to the early Cambrian. Moreover, their shell made of low-magnesium calcite makes these marine calcifiers more resistant to post-depositional diagenetic alteration of primary chemical signals. We have investigated the δ11B using MC-ICP-MS (Neptune Plus) and B/Ca and other elemental ratios (Mg/Ca, Sr/Ca, Al/Ca, Li/Ca, Ba/Ca, Na/Ca and Fe/Ca) using ICP-MS-Quadrupole (Agilent 7500cx) from the same specimens in pristine brachiopod shells from two sections from northern Italy during the Late Permian. These sections cover the δ13C excursion in excess of ˜4 ‰ (Brand et al., 2012) and are associated with major climate and environmental perturbations that lead to the mass extinction event at the Permian-Triassic boundary. Particular emphasis will be placed on the implications of our new paleo-pH estimates on the seawater chemistry during the Late Permian. Brand, U., Posenato, R., Came, R., Affek, H., Angiolini, L., Azmy, K. and Farabegoli, E.: The end-Permian mass extinction: A rapid volcanic CO2 and CH4-climatic catastrophe, Chemical Geology 323, 121-144, doi:10.1016/j.chemgeo.2012.06.015, 2012. Clarkson, M.O., Kasemann, S.A., Wood, R.A., Lenton, T.M., Daines, S.J., Richoz, S., Ohnemueller, F., Meixner, A., Poulton, S.W. and Tipper, E.T.: Ocean acidification and the Permo

  2. Paleogeographic changes across the Pennsylvanian-Permian boundary within the Mid-Continent (USA) inferred from detrital zircon geochronology of continental deposits

    Science.gov (United States)

    Soreghan, M. J.; Soreghan, G. S.

    2017-12-01

    The Permo-Pennsylvanian was characterized by intense orogenesis associated with Pangaean assembly, and profound climate shifts as earth transitioned from full icehouse conditions in the Pennsylvanian-early Permian to collapse into greenhouse conditions by latest Permian time. The modern U.S. Midcontinent was part of equatorial western Pangaea (North America) sandwiched between a continental-scale orogenic zone to the east and south (Appalachian-Ouachita-Marathon orogenic belt) and a series of basement-cored, intra-plate uplifts along western Pangaea (Ancestral Rocky Mountains). Here, we present a compilation of detrital zircon geochronology data from the Permo-Pennsylvanian of the Midcontinent as well as coeval strata of the east and west to explore sediment dispersal and potential tectonic and climatic influences on these provenance signatures. Zircon provenance data come from mostly eolian and fluvial silt- and sandstones of Early Pennsylvanian through Mid Permian age, although some data include marine sandstones. Our new data were acquired by LA-ICPMS at the University of Arizona Laserchron, and predominant age groups include >2500 Ma (Archean), 1600-1800 Ma (Yavapai-Matzatzal), 1300-900 Ma (Grenville), 790-570 Ma (Neoproterozoic), and 480-360 (E-M Paleozoic). However, the relative distributions of these populations exhibit distinctive temporal differences, especially across the Pennsylvanian-Permian boundary, but also spatially in comparison to published data from the Appalachian-Ouachita-Marathon basin, Ancestral Rocky Mountain basins, and the western Pangaean margin. Although the Central Pangaean Mountains, and in particular the Grenville-age basement rocks, were a dominant source of sediment to the Midcontinent, the data suggest an abrupt introduction of Neoproterozoic zircons in the early Permian. This signature also appears within the Ancestral Rocky Mountains region, but is rare along the western margin and the Appalachian basin in the early Permian. This

  3. Coal forming conditions for coal seams and coal measures of the Heshan Group Upper Permian Series in Guangxi Province (part 1)

    Energy Technology Data Exchange (ETDEWEB)

    Li, Y.

    1980-10-01

    Coal forming conditions for the coal measures of the Heshan Group are discussed based on the analysis of the historical background and paleogeographical environment of the Permian in Guangxi Province. The roof, floor, and partings of the seams are composed of algal micritic limestone, therefore affirming that the central part of Guangxi Province in the late Permian was a typical epi-continental sea. The compensative deposit of algea on the carbonate platform in very shallow water created the conditions for the occurrence of the peat swamp and established the supra-tidal swampy facies. The environment for the accumulation of the major coal seams are analyzed. (In Chinese)

  4. Enhanced recycling of organic matter and Os-isotopic evidence for multiple magmatic or meteoritic inputs to the Late Permian Panthalassic Ocean, Opal Creek, Canada

    Science.gov (United States)

    Georgiev, Svetoslav V.; Stein, Holly J.; Hannah, Judith L.; Henderson, Charles M.; Algeo, Thomas J.

    2015-02-01

    The geochemical record for the Permian-Triassic boundary in northern latitudes is essential to evaluation of global changes associated with the most profound extinction of life on Earth. We present inorganic and organic geochemical data, and Re-Os isotope systematics in a critical stratigraphic interval of pre- and post-extinction Upper Permian-Lower Triassic sediments from Opal Creek, western Canada (paleolatitude of ∼30°N). We document significant and long-lived changes in Panthalassa seawater chemistry that were initiated during the first of four magmatic or meteoritic inputs to Late Permian seawater, evidenced by notable decreases of Os isotopic ratios upsection. Geochemical signals indicate establishment of anoxic bottom waters shortly after regional transgression reinitiated sedimentation in the Late Permian. Euxinic signals are most prominent in the Upper Permian sediments with low organic carbon and high sulfur contents, and gradually wane in the Lower Triassic. The observed features may have been generated in a strongly euxinic ocean in which high bacterioplankton productivity sustained prolific microbial sulfate reduction in the sediment and/or water column, providing hydrogen sulfide to form pyrite. This scenario requires nearly complete anaerobic decomposition of predominantly labile marine organic matter (OM) without the necessity for a complete collapse of primary marine productivity. Similar geochemical variations could have been achieved by widespread oxidation of methane by sulfate reducers after a methanogenic burst in the Late Permian. Both scenarios could have provided similar kill mechanisms for the latest Permian mass extinction. Despite the moderate thermal maturity of the section, OM in all studied samples is dominantly terrestrial and/or continentally derived, recycled and refractory ancient OM. We argue that, as such, the quantity of the OM in the section mainly reflects changes in terrestrial vegetation and/or weathering, and not in

  5. Youth map of the city of Santo André, Southeastern Brazil: an instrument to read social inequalities.

    Science.gov (United States)

    Yonekura, Tatiana; Soares, Cássia Baldini; Minuci, Elaine Garcia; Campos, Célia Maria Sivalli; Trapé, Carla Andrea

    2010-02-01

    To analyze social inequalities in young adults living in an urban area by mapping sociodemographic and economic data. Using data from the 2000 Demographic Census, 57 sociodemographic and economic variables of young adults aged from 15 to 24 years, living in the city of Santo André, Southeastern Brazil, were distributed among 43 areas of statistical data, corresponding to a division of the region into smaller districts. Data from the year 2000 were collected from the Santo André City Hall Department of Socioeconomic Indicators. Using factorial analysis, 13 variables were grouped in two factors - working conditions and life conditions, which distinguished areas that were similar to one another statistically. Cluster analysis of areas was performed, resulting in four social groups. The area that concentrated young adults with higher access to wealth was classified as central and that including individuals with lower access to wealth was classified as peripheral. Two intermediate areas could be identified, one closer to the highest access to wealth ('almost central') and another close to the lowest access to wealth ('almost peripheral'). Discriminating variables were associated with work, migration, level of education, fertility, adolescent's position in the household, presence of spouse or partner, living conditions and assets owned. Differences among social groups revealed important inequalities among young adults who live, study and/or work in the city, which will contribute to the planning of public social policies aimed at these groups.

  6. Kjøring med mistanke om påvirkning av andre rusmidler enn alkohol

    Directory of Open Access Journals (Sweden)

    Asbjørg S. Christophersen

    2009-10-01

    Full Text Available  SAMMENDRAGStatens rettstoksikologiske institutt har i løpet av de siste år registrert en stor økning av prøver fra bilføreremistenkt for kjøring under påvirkning av andre rusmidler enn alkohol. Antall positive saker økte 42% fra1994 til 1995. De hyppigste påviste stoffer er tetrahydrocannabinol, amfetamin, benzodiazepiner og opiater(morfin/kodein. Bruk av tyngre narkotiske stoffer har blitt mer vanlig i trafikksammenheng og antall positivetilfeller har økt betydelig mer enn totalt antall saker. Fra 1994 til 1995 økte antall positive amfetaminprøvermed 75% (fra 533 til 937 og antall positive prøver som følge av heroininntak økte med 87% (fra 92 til 172.Bruk av flere stoffer samtidig er vanlig, over 60 % av sakene i 1995 var positive på mer enn ett stoff, alkoholikke medregnet. De fleste tilfeller var representert av menn i alderen 25-32 år (37%. Kvinner var representerti ca. 11% av sakene.Christophersen AS, Skurtveit S, Mørland J. Drivers suspected to drive under the influence of drugs otherthan alcohol. Nor J Epidemiol 1996; 6 (1: 45-48.ENGLISH SUMMARYThe National Institute of Forensic Toxicology has registered a large increase in the number of samples fromdrivers suspected to drive under influence of drugs other than alcohol. The number of drug positive casesincreased 42% from 1994 to 1995. The most frequent drugs detected are tetrahydrocannabinol, amphetamine,benzodiazepines and opiates (morphine/codeine. The frequency of hard narcotic drug use has increased morethan the total number of cases. From 1994 to 1995, the number of amphetamine positive samples increased75% (from 533 to 937 and the number of samples positive due to heroin use (detection of the metabolite 6-monoacetylmorphine in urine increased 87%. Multi-drug use is common and more than one drug wasdetected in more than 60% of the cases from 1995, alcohol not included. Most of the cases were representedby men 25-32 years old (37%. Women were represented in about

  7. Properties of Halococcus salifodinae, an Isolate from Permian Rock Salt Deposits, Compared with Halococci from Surface Waters

    Directory of Open Access Journals (Sweden)

    Helga Stan-Lotter

    2013-02-01

    Full Text Available Halococcus salifodinae BIpT DSM 8989T, an extremely halophilic archaeal isolate from an Austrian salt deposit (Bad Ischl, whose origin was dated to the Permian period, was described in 1994. Subsequently, several strains of the species have been isolated, some from similar but geographically separated salt deposits. Hcc. salifodinae may be regarded as one of the most ancient culturable species which existed already about 250 million years ago. Since its habitat probably did not change during this long period, its properties were presumably not subjected to the needs of mutational adaptation. Hcc. salifodinae and other isolates from ancient deposits would be suitable candidates for testing hypotheses on prokaryotic evolution, such as the molecular clock concept, or the net-like history of genome evolution. A comparison of available taxonomic characteristics from strains of Hcc. salifodinae and other Halococcus species, most of them originating from surface waters, is presented. The cell wall polymer of Hcc. salifodinae was examined and found to be a heteropolysaccharide, similar to that of Hcc. morrhuae. Polyhydroxyalkanoate granules were present in Hcc. salifodinae, suggesting a possible lateral gene transfer before Permian times.

  8. Peronosporomycetes (Oomycota from a Middle Permian permineralised peat within the Bainmedart Coal Measures, Prince Charles Mountains, Antarctica.

    Directory of Open Access Journals (Sweden)

    Ben J Slater

    Full Text Available The fossil record of Peronosporomycetes (water moulds is rather sparse, though their distinctive ornamentation means they are probably better reported than some true fungal groups. Here we describe a rare Palaeozoic occurrence of this group from a Guadalupian (Middle Permian silicified peat deposit in the Bainmedart Coal Measures, Prince Charles Mountains, Antarctica. Specimens are numerous and comprise two morphologically distinct kinds of ornamented oogonia, of which some are attached to hyphae by a septum. Combresomyces caespitosus sp. nov. consists of spherical oogonia bearing densely spaced, long, hollow, slender, conical papillae with multiple sharply pointed, strongly divergent, apical branches that commonly form a pseudoreticulate pattern under optical microscopy. The oogonia are attached to a parental hypha by a short truncated stalk with a single septum. Combresomyces rarus sp. nov. consists of spherical oogonia bearing widely spaced, hollow, broad, conical papillae that terminate in a single bifurcation producing a pair of acutely divergent sharply pointed branches. The oogonium bears a short truncate extension where it attaches to the parental hypha. We propose that similarities in oogonium shape, size, spine morphology and hyphal attachment between the Permian forms from the Prince Charles Mountains and other reported Peronosporomycetes from Devonian to Triassic strata at widely separated localities elsewhere in the world delimit an extinct but once cosmopolitan Palaeozoic to early Mesozoic branch of the peronosporomycete clade. We name this order Combresomycetales and note that it played an important role in late Palaeozoic and early Mesozoic peatland ecosystems worldwide.

  9. The Triassic dicynodont Kombuisia (Synapsida, Anomodontia) from Antarctica, a refuge from the terrestrial Permian-Triassic mass extinction.

    Science.gov (United States)

    Fröbisch, Jörg; Angielczyk, Kenneth D; Sidor, Christian A

    2010-02-01

    Fossils from the central Transantarctic Mountains in Antarctica are referred to a new species of the Triassic genus Kombuisia, one of four dicynodont lineages known to survive the end-Permian mass extinction. The specimens show a unique combination of characters only present in this genus, but the new species can be distinguished from the type species of the genus, Kombuisia frerensis, by the presence of a reduced but slit-like pineal foramen and the lack of contact between the postorbitals. Although incomplete, the Antarctic specimens are significant because Kombuisia was previously known only from the South African Karoo Basin and the new specimens extend the taxon's biogeographic range to a wider portion of southern Pangaea. In addition, the new finds extend the known stratigraphic range of Kombuisia from the Middle Triassic subzone B of the Cynognathus Assemblage Zone into rocks that are equivalent in age to the Lower Triassic Lystrosaurus Assemblage Zone, shortening the proposed ghost lineage of this taxon. Most importantly, the occurrence of Kombuisia and Lystrosaurus mccaigi in the Lower Triassic of Antarctica suggests that this area served as a refuge from some of the effects of the end-Permian extinction. The composition of the lower Fremouw Formation fauna implies a community structure similar to that of the ecologically anomalous Lystrosaurus Assemblage Zone of South Africa, providing additional evidence for widespread ecological disturbance in the extinction's aftermath.

  10. An exceptionally preserved transitional lungfish from the lower permian of Nebraska, USA, and the origin of modern lungfishes.

    Directory of Open Access Journals (Sweden)

    Jason D Pardo

    Full Text Available Complete, exceptionally-preserved skulls of the Permian lungfish Persephonichthys chthonica gen. et sp. nov. are described. Persephonichthys chthonica is unique among post-Devonian lungfishes in preserving portions of the neurocranium, permitting description of the braincase of a stem-ceratodontiform for the first time. The completeness of P. chthonica permits robust phylogenetic analysis of the relationships of the extant lungfish lineage within the Devonian lungfish diversification for the first time. New analyses of the relationships of this new species within two published matrices using both maximum parsimony and Bayesian inference robustly place P. chthonica and modern lungfishes within dipterid-grade dipnoans rather than within a clade containing Late Devonian 'phaneropleurids' and common Late Paleozoic lungfishes such as Sagenodus. Monophyly of post-Devonian lungfishes is not supported and the Carboniferous-Permian taxon Sagenodus is found to be incidental to the origins of modern lungfishes, suggesting widespread convergence in Late Paleozoic lungfishes. Morphology of the skull, hyoid arch, and pectoral girdle suggests a deviation in feeding mechanics from that of Devonian lungfishes towards the more dynamic gape cycle and more effective buccal pumping seen in modern lungfishes. Similar anatomy observed previously in 'Rhinodipterus' kimberyensis likely represents an intermediate state between the strict durophagy observed in most Devonian lungfishes and the more dynamic buccal pump seen in Persephonichthys and modern lungfishes, rather than adaptation to air-breathing exclusively.

  11. An Exceptionally Preserved Transitional Lungfish from the Lower Permian of Nebraska, USA, and the Origin of Modern Lungfishes

    Science.gov (United States)

    Pardo, Jason D.; Huttenlocker, Adam K.; Small, Bryan J.

    2014-01-01

    Complete, exceptionally-preserved skulls of the Permian lungfish Persephonichthys chthonica gen. et sp. nov. are described. Persephonichthys chthonica is unique among post-Devonian lungfishes in preserving portions of the neurocranium, permitting description of the braincase of a stem-ceratodontiform for the first time. The completeness of P. chthonica permits robust phylogenetic analysis of the relationships of the extant lungfish lineage within the Devonian lungfish diversification for the first time. New analyses of the relationships of this new species within two published matrices using both maximum parsimony and Bayesian inference robustly place P. chthonica and modern lungfishes within dipterid-grade dipnoans rather than within a clade containing Late Devonian ‘phaneropleurids’ and common Late Paleozoic lungfishes such as Sagenodus. Monophyly of post-Devonian lungfishes is not supported and the Carboniferous-Permian taxon Sagenodus is found to be incidental to the origins of modern lungfishes, suggesting widespread convergence in Late Paleozoic lungfishes. Morphology of the skull, hyoid arch, and pectoral girdle suggests a deviation in feeding mechanics from that of Devonian lungfishes towards the more dynamic gape cycle and more effective buccal pumping seen in modern lungfishes. Similar anatomy observed previously in ‘Rhinodipterus’ kimberyensis likely represents an intermediate state between the strict durophagy observed in most Devonian lungfishes and the more dynamic buccal pump seen in Persephonichthys and modern lungfishes, rather than adaptation to air-breathing exclusively. PMID:25265394

  12. Permian salt dissolution, alkaline lake basins, and nuclear-waste storage, Southern High Plains, Texas and New Mexico

    International Nuclear Information System (INIS)

    Reeves, C.C. Jr.; Temple, J.M.

    1986-01-01

    Areas of Permian salt dissolution associated with 15 large alkaline lake basins on and adjacent to the Southern High Plains of west Texas and eastern New Mexico suggest formation of the basins by collapse of strata over the dissolution cavities. However, data from 6 other alkaline basins reveal no evidence of underlying salt dissolution. Thus, whether the basins were initiated by subsidence over the salt dissolution areas or whether the salt dissolution was caused by infiltration of overlying lake water is conjectural. However, the fact that the lacustrine fill in Mound Lake greatly exceeds the amount of salt dissolution and subsidence of overlying beds indicates that at least Mound Lake basin was antecedent to the salt dissolution. The association of topography, structure, and dissolution in areas well removed from zones of shallow burial emphasizes the susceptibility of Permian salt-bed dissolution throughout the west Texas-eastern New Mexico area. Such evidence, combined with previous studies documenting salt-bed dissolution in areas surrounding a proposed high-level nuclear-waste repository site in Deaf Smith County, Texas, leads to serious questions about the rationale of using salt beds for nuclear-waste storage

  13. Irradiation of quartz grains - a new method of sedimentological analysis applied to Permian - Carboniferous arenites in the Maranhao Basin - Brazil

    International Nuclear Information System (INIS)

    Carmo Faria Junior, L.E. do

    1980-01-01

    The quartz grains of sediments and sedimentary rocks change their colour in variable intensity to smoky-quartz by X-ray irradiation, Co 60 or in reactors, dependent on their temperature of cristallization. The quantity of quartz grains which were stained and which were not stained after being irradiated are related to rock types from the source areas. This method was applied for selected sandstones of different stratigraphical levels of the Permian-Carboniferous in the Maranhao Basin of Brazil. Studeis on heavy minerals of these sandstones have been done before. The heavy mineral associations of the Permian Pedra de Fogo Formation corroborate the results of the analysis of quartz grains which indicate a predominance of the metamorphic rocks in the source area. However, the heavy mineral parageneses of the Carboniferous Piaui Formation are different. This may be because the frequency of those heavy minerals depend directly on the stage of the weathering of the sandstones. It should be mentioned that heavy minerals occur in paleozoic sediments only in a small quantity, sometimes below 1% of the rock constitution. The irradiation analysis, which is applied for the predominant mineral in sandstones, appears to be most reliable. It is used here as the basis for the interpretations presented. (Author) [pt

  14. Regional summary and recommended study areas for the Texas panhandle portion of the Permian Basin. Technical report

    International Nuclear Information System (INIS)

    1979-10-01

    This report summarizes the regional geologic and environmental characterizations that have been completed for the Permian region of study, and describes the procedure used to identify study areas for the next phase of investigation. The factors evaluated in the Permian region fall into three broad areas: health and safety, environmental and socioeconomic, and engineering and economic considerations. Health and safety considerations included salt depth and thickness, faults, seismic activity, groundwater, salt dissolution, energy and mineral resources, presence of boreholes, and interactive land uses. Salt depth and thickness was the key health and safety factor, and when mapped, proved to be a discriminator. The evaluation of environmental and socioeconomic conditions focused primarily on the presence of urban areas and on designated land uses such as parks, wildlife areas, and historic sites. Engineering and economic considerations centered primarily on salt depth, which was already evaluated in the health and safety area. The Palo Duro and Dalhart basins are recommended for future studies on the basis of geology. In these two basins, salt depth and thickness appear promising, and there is less likelihood of past or future oil and gas exploratory holes. Environmental and socioeconomic factors did not preclude any of the basins from further study

  15. Rock mechanics evaluation of potential repository sites in the Paradox, Permian, and Gulf Coast Basins: Volume 1

    International Nuclear Information System (INIS)

    1987-09-01

    Thermal and thermomechanical analyses of a conceptual radioactive waste repository containing commercial and defense high-level wastes and spent fuel have been performing using finite element models. The thermal and thermomechanical responses of the waste package, disposal room, and repository regions were evaluated. four bedded salt formations, in Davis and Lavender Canyons in the Paradox Basin of southeastern Utah and in Deaf Smith and Swisher counties in the Permian Basin of northwestern Texas, and three salt domes, Vacherie Dome in northwestern Louisiana and Richton and Cypress Creek Domes in southeastern Mississippi, located in the Gulf Coast Basin, were examined. In the Paradox Basin, the pressure exerted on the waste package overpack was much greater than the initial in situ stress. The disposal room closure was less than 10 percent after 5 years. Surface uplift was nominal, and no significant thermomechanical perturbation of the aquitards was observed. In the Permian Basin, the pressure exerted on the waste package overpack was greater than the initial in situ stress. The disposal room closures were greater than 10 percent in less than 5 years. Surface uplift was nominal, and no significant thermomechanical perturbation of the aquitards was observed. In the Gulf Coast Basin, the pressure exerted on the waste package overpack was greater than the initial in situ stress. The disposal room closures were greater than 10 percent in less than 5 years. No significant thermomechanical perturbation of the overlying geology was observed. 40 refs., 153 figs., 32 tabs

  16. Enhanced Preliminary Assessment Report: Presidio of San Francisco Military Reservation, San Francisco, California

    Science.gov (United States)

    1989-11-01

    CAD981415656 Filmore Steiner Bay San Francisco 24 PG&E Gas Plant SanFran 502-IG CAD981415714 Bay North Point Buchanan Laguna 25 PG&E Gas Plant SanFran 502-1H...76-ioV /5,JO /0.7 /,230 PSF Water PSF, Main U.N. Lagunda Honda Analvte Plant Clearwell Reservoir Plaza Reservoi- Chlordane inetab. ə.2 ə.2 (1.2 ə.2

  17. A case for historic joint rupture of the San Andreas and San Jacinto faults

    OpenAIRE

    Lozos, Julian C.

    2016-01-01

    The San Andreas fault is considered to be the primary plate boundary fault in southern California and the most likely fault to produce a major earthquake. I use dynamic rupture modeling to show that the San Jacinto fault is capable of rupturing along with the San Andreas in a single earthquake, and interpret these results along with existing paleoseismic data and historic damage reports to suggest that this has likely occurred in the historic past. In particular, I find that paleoseismic data...

  18. Evaluation of a Voluntary Tutoring Program in Chemistry, Physics and Mathematics for First-Year Undergraduates at Universidad Andres Bello, Chile

    Science.gov (United States)

    Jiménez, Verónica A.; Acuña, Fabiola C.; Quiero, Felipe J.; López, Margarita; Zahn, Carmen I.

    2015-01-01

    This work describes the preliminary results of a tutoring program that provides personalized academic assistance to first-year undergraduates enrolled in introductory chemistry, physics and mathematics courses at Universidad Andres Bello (UNAB), in Concepción, Chile. Intervened courses have historically large enrolments, diverse student population…

  19. Tracing the development of contemporary park-city relationships : Parc de La Villette and Parc André Citroën (paper + presentation)

    NARCIS (Netherlands)

    Van der Velde, J.R.T.

    2012-01-01

    Since the late post--?war period the relationship between park and city has significantly altered. Parks established between 1980 and 2000 in Paris --? in particular Parc de La Villette and Parc André Citroën – exemplify developments in park design and the park--?city relationship in this period and

  20. Estonian Golf Countri Club'i Jägala golfiklubi sisekujundus. Jõelähtme, Mannila küla / Juta Lember, Andres Siim, Tarmo Luisk...[jt.

    Index Scriptorium Estoniae

    2006-01-01

    3 korruste plaani, värv. välisvaade, 22 sisevaadet; fotod: Kalle Veesaar; Juta Lember projekteeris ka tammepuust mööbli; arhitekt Andres Siim; nõupidamisruumi toolide ja nagide autor: Toivo Raidmets; metallvalgustite autor: Tarmo Luisk

  1. XII Avatud Ühiskonna Foorumi arutlusring "Euroopa hiilgus ja viletsus - Euroopa Liit 50. Kuidas edasi?" / Toomas Hendrik Ilves, Mark Leonard, Ivan Krastev ; intervjueerinud Andres Kasekamp

    Index Scriptorium Estoniae

    Ilves, Toomas Hendrik, 1953-

    2008-01-01

    Pärnus diskuteerisid 10. oktoobril 2007 Euroopa tuleviku teemadel president Toomas Hendrik Ilves, Euroopa Välissuhete Nõukogu tegevjuht Mark Leonard ja Sofias paikneva Liberaalstrateegiate Keskuse juht Ivan Krastev. Vestluse moderaator oli Eesti Välispoliitika Instituudi direktor, Avatud Eesti Fondi nõukogu esimees Andres Kasekamp

  2. Stygofauna of the Canary Islands, 4. Liagoceradocus acutus Andres, 1978, a blind anchihaline amphipod from Lanzarote: redescription, taxonomic status and occurrence

    NARCIS (Netherlands)

    Rondé-Broekhuizen, Brigitte L.M.; Stock, Jan H.

    1987-01-01

    Liagoceradocus acutus Andres, 1978, has been found in different localities on Lanzarote, Canary Islands. A redescription is provided and the taxonomic status of the genus Liagoceradocus is discussed. The species shows sexual dimorphism mainly in the morphology of the propodus of gnathopods 1 and 2,

  3. Process optimisation of microwave-assisted extraction of peony ( Paeonia suffruticosa Andr .) seed oil using hexane-ethanol mixture and its characterisation

    Science.gov (United States)

    Xiaoli Sun; Wengang Li; Jian Li; Yuangang Zu; Chung-Yun Hse; Jiulong Xie; Xiuhua Zhao

    2016-01-01

    Ethanol and hexane mixture agent microwave-assisted extraction (MAE) method was conducted to extract peony (Paeonia suffruticosa Andr.) seed oil (PSO). The aim of the study was to optimise the extraction for both yield and energy consumption in mixture agent MAE. The highest oil yield (34.49%) and lowest unit energy consumption (14 125.4 J g -1)...

  4. Description of gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California

    Science.gov (United States)

    Woodrow, Donald L.; John L. Chin,; Wong, Florence L.; Fregoso, Theresa A.; Jaffe, Bruce E.

    2017-06-27

    Seventy-two gravity cores were collected by the U.S. Geological Survey in 1990, 1991, and 2000 from San Pablo Bay and Carquinez Strait, California. The gravity cores collected within San Pablo Bay contain bioturbated laminated silts and sandy clays, whole and broken bivalve shells (mostly mussels), fossil tube structures, and fine-grained plant or wood fragments. Gravity cores from the channel wall of Carquinez Strait east of San Pablo Bay consist of sand and clay layers, whole and broken bivalve shells (less than in San Pablo Bay), trace fossil tubes, and minute fragments of plant material.

  5. Insuring Water Sustainability for Resource Extraction in the New Mexico Permian Basin

    Science.gov (United States)

    Lowry, T. S.; Schuhen, M. D.; Lofton, O. W.; Walker, L. T. N.; Johnson, P. B.; Land, L. A.; Herrell, D.

    2017-12-01

    Advancements in directional drilling and well completion technologies have resulted in an exponential growth in the use of hydraulic fracturing for oil and gas extraction. Within the New Mexico portion of the Permian Basin (see figure), water demand to complete each hydraulically fractured well is estimated to average 7.3 acre-feet (2.4 million gallons), which has resulted in an increase in the regional water demand of over 5000 acre-feet per year. The rise in demand along with proposed rule changes that govern the regulation and management of hydraulic fracturing on Federal and Indian lands (40 CFS 3160) has created concern as to the regions ability to meet the demand in a manner that can sustainably meet the needs of the variety of water users and other stakeholders in the region while also protecting human health and the environment. Funded by the Bureau of Land Management who is charged with managing the regions water resources on Federal lands, this project is addressing those concerns using a multi-disciplinary approach that synthesizes data collection, field verification, and system dynamics (SD) modeling to better understand the dynamics of the regional water supply and demand under different management, policy, and growth scenarios. The scientific challenge has been in bringing together disparate data in a manner that exposes the temporal and spatial dynamics of the regional water supply in the context of increasing demands and changing policy and management scenarios. Field verification and testing activities are used to evaluate existing borehole data to insure that the data are accurate and up to date. The SD model simulates forecasted increases in drilling activity and water demand relative to each water source to identify areas that are most vulnerable and to estimate risk to water sustainability. Key to this is the models ability to seamlessly handle uncertainty such that it produces probabilistic outputs that allow decision makers to explore and

  6. Sedimentary and environmental history of the Late Permian Bonikowo Reef (Zechstein Limestone, Wuchiapingian, western Poland

    Directory of Open Access Journals (Sweden)

    Paweł Raczyński

    2017-07-01

    Full Text Available The Bonikowo Reef occurs in the central part of the Zechstein Limestone Basin in western Poland and was growing on the topmost edges of tilted blocks and/or on the top of uplifted horsts of the Brandenburg–Wolsztyn–Pogorzela High. Its size is ca. 1.6 km2. The Bonikowo Reef shows the thickest reef section (90.5 m recorded in the High. The Zechstein Limestone unit is represented mostly by limestones, often thoroughly recrystallized, although the macrotextures and biota of the boundstone are identifiable in most cases. The drillcore section is a mixture of boundstones (microbial and bryozoan, wackestones, packstones and grainstones, which often co-occur. The δ13C and δ18O values for both calcite (avg. 3.8 ± 0.8‰ and −3.4 ± 1.7‰, respectively and dolomite (avg. 3.5 ± 0.7‰ and −5.2 ± 1.3‰, respectively are transitional between the values previously reported for condensed sequences of the basinal facies and larger reef complexes. The biofacies of the Bonikowo Reef are very similar to those recognized in other reefs of the Brandenburg–Wolsztyn–Pogorzela High, which owe their origin to the destruction of bryozoan boundstones. The biota composition is typical and characteristic of other Zechstein Limestone reefs. However, the Bonikowo Reef demonstrates the importance of microbialites, laminar and nodose encrustations, in the growth and cohesion of the Zechstein Limestone reefs. Such encrustations abound within the Zechstein Limestone although, in many cases, the real nature of the encrustations is difficult to ascertain. These laminated encrustations show great similarity to Archaeolithoporella that is one of the most important Permian reef-building organisms. The encrustations considered to represent Archaeolithoporella were also previously recorded in the Zechstein Limestone of western Poland and in its stratigraphic equivalent, the Middle Magnesian Limestone of Northeast England. The lower part of the sequence shows

  7. Latest Permian carbonate carbon isotope variability traces heterogeneous organic carbon accumulation and authigenic carbonate formation

    Directory of Open Access Journals (Sweden)

    M. Schobben

    2017-11-01

    Full Text Available Bulk-carbonate carbon isotope ratios are a widely applied proxy for investigating the ancient biogeochemical carbon cycle. Temporal carbon isotope trends serve as a prime stratigraphic tool, with the inherent assumption that bulk micritic carbonate rock is a faithful geochemical recorder of the isotopic composition of seawater dissolved inorganic carbon. However, bulk-carbonate rock is also prone to incorporate diagenetic signals. The aim of the present study is to disentangle primary trends from diagenetic signals in carbon isotope records which traverse the Permian–Triassic boundary in the marine carbonate-bearing sequences of Iran and South China. By pooling newly produced and published carbon isotope data, we confirm that a global first-order trend towards depleted values exists. However, a large amount of scatter is superimposed on this geochemical record. In addition, we observe a temporal trend in the amplitude of this residual δ13C variability, which is reproducible for the two studied regions. We suggest that (sub-sea-floor microbial communities and their control on calcite nucleation and ambient porewater dissolved inorganic carbon δ13C pose a viable mechanism to induce bulk-rock δ13C variability. Numerical model calculations highlight that early diagenetic carbonate rock stabilization and linked carbon isotope alteration can be controlled by organic matter supply and subsequent microbial remineralization. A major biotic decline among Late Permian bottom-dwelling organisms facilitated a spatial increase in heterogeneous organic carbon accumulation. Combined with low marine sulfate, this resulted in varying degrees of carbon isotope overprinting. A simulated time series suggests that a 50 % increase in the spatial scatter of organic carbon relative to the average, in addition to an imposed increase in the likelihood of sampling cements formed by microbial calcite nucleation to 1 out of 10 samples, is sufficient to induce the

  8. Origin of Permian OIB-like basalts in NW Thailand and implication on the Paleotethyan Ocean

    Science.gov (United States)

    Wang, Yuejun; He, Huiying; Zhang, Yuzhi; Srithai, Boontarika; Feng, Qinglai; Cawood, Peter A.; Fan, Weiming

    2017-03-01

    The basaltic rocks in NW Thailand belong to part of giant Southeast Asian igneous zone that delineates the extension of the Paleotethyan Ocean from SW China into NW Thailand. The Chiang Mai basaltic samples from the Chiang Dao, Fang, Lamphun and Ban Sahakorn sections are divisible into two groups of high-iron basalt. Group 1 has SiO2 of 38.30-49.18 wt.%, FeOt of 13.09-25.37 wt.%, MgO of 8.38-1.60 wt.%, TiO2 of 3.92-6.30 wt.%, which is rarely observed in nature. Group 2 shows SiO2 = 44.71-49.21 wt.%, FeOt = 10.88-14.34 wt.%, MgO = 5.24-16.11 wt.%, TiO2 = 2.22-3.07 wt.% and mg# = 44-70. Olivine and pyroxene are responsible for the fractionation of the Group 2 magma whereas low oxygen fugacity during the late-stage differentiation of the Group 1 magma prolonged fractionation of ilmenite and magnetite. The onset of ilmenite and magnetite fractionations controls the distinct differentiation commencing at MgO = 7 wt.%. Both groups show similar REE and primitive mantle-normalized patterns with insignificant Eu, Nb-Ta and Zr-Hf anomalies. They have similar Nd isotopic compositions with εNd (t) values ranging from + 2.8 to + 3.7 and similar Nb/La, Nb/U, Th/La, Zr/Nb, Th/Ta, La/Yb, Nb/Th, Nb/Y and Zr/Y, resembling those of OIB-like rocks. The representative basaltic sample yields the argon plateau age of 282.3 ± 1.4 Ma, suggestive of Early Permian origin. Our data argue for Group 1 and Group 2 are coeval in the intra-oceanic seamount setting within the Paleotethyan Ocean, which at least continued till 283 Ma. These data, along with other observations, suggest that the Inthanon zone defines the main Paleotethyan suture zone, which northerly links with the Changning-Menglian suture zone in SW China.

  9. 76 FR 9709 - Water Quality Challenges in the San Francisco Bay/Sacramento-San Joaquin Delta Estuary

    Science.gov (United States)

    2011-02-22

    ... Water Quality Challenges in the San Francisco Bay/Sacramento-San Joaquin Delta Estuary AGENCY... the San Francisco Bay/ Sacramento-San Joaquin Delta Estuary (Bay Delta Estuary) in California. EPA is... programs to address recent significant declines in multiple aquatic species in the Bay Delta Estuary. EPA...

  10. 33 CFR 165.776 - Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico 165.776 Section 165.776 Navigation and Navigable Waters COAST... Guard District § 165.776 Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico (a...

  11. 76 FR 22809 - Safety Zone; Bay Ferry II Maritime Security Exercise; San Francisco Bay, San Francisco, CA

    Science.gov (United States)

    2011-04-25

    ... DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 165 [Docket No. USCG-2011-0196] RIN 1625-AA00 Safety Zone; Bay Ferry II Maritime Security Exercise; San Francisco Bay, San Francisco, CA AGENCY... Security Exercise; San Francisco Bay, San Francisco, CA. (a) Location. The limits of this safety zone...

  12. 76 FR 10945 - San Luis Trust Bank, FSB, San Luis Obispo, CA; Notice of Appointment of Receiver

    Science.gov (United States)

    2011-02-28

    ... DEPARTMENT OF THE TREASURY Office of Thrift Supervision San Luis Trust Bank, FSB, San Luis Obispo, CA; Notice of Appointment of Receiver Notice is hereby given that, pursuant to the authority... appointed the Federal Deposit Insurance Corporation as sole Receiver for San Luis Trust Bank, FSB, San Luis...

  13. Perspective View, San Andreas Fault

    Science.gov (United States)

    2000-01-01

    The prominent linear feature straight down the center of this perspective view is California's famous San Andreas Fault. The image, created with data from NASA's Shuttle Radar Topography Mission (SRTM), will be used by geologists studying fault dynamics and landforms resulting from active tectonics. This segment of the fault lies west of the city of Palmdale, Calif., about 100 kilometers (about 60 miles) northwest of Los Angeles. The fault is the active tectonic boundary between the North American plate on the right, and the Pacific plate on the left. Relative to each other, the Pacific plate is moving away from the viewer and the North American plate is moving toward the viewer along what geologists call a right lateral strike-slip fault. Two large mountain ranges are visible, the San Gabriel Mountains on the left and the Tehachapi Mountains in the upper right. Another fault, the Garlock Fault lies at the base of the Tehachapis; the San Andreas and the Garlock Faults meet in the center distance near the town of Gorman. In the distance, over the Tehachapi Mountains is California's Central Valley. Along the foothills in the right hand part of the image is the Antelope Valley, including the Antelope Valley California Poppy Reserve. The data used to create this image were acquired by SRTM aboard the Space Shuttle Endeavour, launched on February 11, 2000.This type of display adds the important dimension of elevation to the study of land use and environmental processes as observed in satellite images. The perspective view was created by draping a Landsat satellite image over an SRTM elevation model. Topography is exaggerated 1.5 times vertically. The Landsat image was provided by the United States Geological Survey's Earth Resources Observations Systems (EROS) Data Center, Sioux Falls, South Dakota.SRTM uses the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour

  14. Performance of BATAN-SANS instrument

    Energy Technology Data Exchange (ETDEWEB)

    Ikram, Abarrul; Insani, Andon [National Nuclear Energy Agency, P and D Centre for Materials Science and Technology, Serpong (Indonesia)

    2003-03-01

    SANS data from some standard samples have been obtained using BATAN-SANS instrument in Serpong. The experiments were performed for various experimental set-ups that involve different detector positions and collimator lengths. This paper describes the BATAN-SANS instrument briefly as well as the data taken from those experiments and followed with discussion of the results concerning the performance and calibration of the instrument. The standard samples utilized in these experiments include porous silica, polystyrene-poly isoprene, silver behenate, poly ball and polystyrene-poly (ethylene-alt-propylene). Even though the results show that BATAN-SANS instrument is in good shape, but rooms for improvements are still widely open especially for the velocity selector and its control system. (author)

  15. AMS San Diego Testbed - Calibration Data

    Data.gov (United States)

    Department of Transportation — The data in this repository were collected from the San Diego, California testbed, namely, I-15 from the interchange with SR-78 in the north to the interchange with...

  16. San Antonio Bay 1986-1989

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The effect of salinity on utilization of shallow-water nursery habitats by aquatic fauna was assessed in San Antonio Bay, Texas. Overall, 272 samples were collected...

  17. San Francisco Bay Interferometric Bathymetry: Area B

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — High resolution sonar data were collected over ultra-shallow areas of the San Francisco Bay estuary system. Bathymetric and acoustic backscatter data were collected...

  18. April 1906 San Francisco, USA Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The 1906 San Francisco earthquake was the largest event (magnitude 8.3) to occur in the conterminous United States in the 20th Century. Recent estimates indicate...

  19. San Jacinto Tries Management by Objectives

    Science.gov (United States)

    Deegan, William

    1974-01-01

    San Jacinto, California, has adopted a measurable institutional objectives approach to management by objectives. Results reflect, not only improved cost effectiveness of community college education, but also more effective educational programs for students. (Author/WM)

  20. Radon emanation on San Andreas Fault

    International Nuclear Information System (INIS)

    King, C.-Y.

    1978-01-01

    It is stated that subsurface radon emanation monitored in shallow dry holes along an active segment of the San Andreas fault in central California shows spatially coherent large temporal variations that seem to be correlated with local seismicity. (author)