WorldWideScience

Sample records for geologic formations

  1. System for fracturing an underground geologic formation

    Science.gov (United States)

    Mace, Jonathan L.; Tappan, Bryce C.; Seitz, Gerald J.; Bronisz, Lawrence E.

    2017-03-14

    An explosive system for fracturing an underground geologic formation adjacent to a wellbore can comprise a plurality of explosive units comprising an explosive material contained within the casing, and detonation control modules electrically coupled to the plurality of explosive units and configured to cause a power pulse to be transmitted to at least one detonator of at least one of the plurality of explosive units for detonation of the explosive material. The explosive units are configured to be positioned within a wellbore in spaced apart positions relative to one another along a string with the detonation control modules positioned adjacent to the plurality of explosive units in the wellbore, such that the axial positions of the explosive units relative to the wellbore are at least partially based on geologic properties of the geologic formation adjacent the wellbore.

  2. System for fracturing an underground geologic formation

    Energy Technology Data Exchange (ETDEWEB)

    Mace, Jonathan L.; Tappan, Bryce C.; Seitz, Gerald J.; Bronisz, Lawrence E.

    2017-03-14

    An explosive system for fracturing an underground geologic formation adjacent to a wellbore can comprise a plurality of explosive units comprising an explosive material contained within the casing, and detonation control modules electrically coupled to the plurality of explosive units and configured to cause a power pulse to be transmitted to at least one detonator of at least one of the plurality of explosive units for detonation of the explosive material. The explosive units are configured to be positioned within a wellbore in spaced apart positions relative to one another along a string with the detonation control modules positioned adjacent to the plurality of explosive units in the wellbore, such that the axial positions of the explosive units relative to the wellbore are at least partially based on geologic properties of the geologic formation adjacent the wellbore.

  3. Geologic Controls of Sand Boil Formation at Buck Chute, Mississippi

    Science.gov (United States)

    2017-06-30

    Geology ........................................................................................................................... 4 2.3 Description of...18 3.1 Geology of the Lower Mississippi River Valley...Hypothesis Sand boil formation at the Buck Chute site is the result of geology consisting of point bar and abandoned channel deposits with a thin

  4. Digital Geologic Map of New Mexico - Formations

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The geologic map was created in GSMAP at Socorro, New Mexico by Orin Anderson and Glen Jones and published as the Geologic Map of New Mexico 1:500,000 in GSMAP...

  5. Research on formation density MWD instrument in engineering geological exploration

    Institute of Scientific and Technical Information of China (English)

    Dajun ZHAO; Guosheng JIANG; Youhong SUN; Junhua ZHENG; Zhuwen WANG

    2008-01-01

    A high efficiency method is very important in geological survey for a new city in China. Geophysical parameters are Measured While Drilling(MWD), and these parameters are processed and explained on the ground, so the method can replace conventional engineering geological exploration for drilling rock sample. According petroleum engineering MWD, using the different characters of different rock absorbs γ radial, with the method of storing data in hole and explaining data on the ground, engineering geological exploration formation density MWD is researched. The MWD works stabilized, and the performance is good with precise data.

  6. Geology of the Biwabik Iron Formation and Duluth Complex.

    Science.gov (United States)

    Jirsa, Mark A; Miller, James D; Morey, G B

    2008-10-01

    The Biwabik Iron Formation is a approximately 1.9 billion year-old sequence of iron-rich sedimentary rocks that was metamorphosed at its eastern-most extent by approximately 1.1 billion year-old intrusions of the Duluth Complex. The metamorphic recrystallization of iron-formation locally produced iron-rich amphiboles and other fibrous iron-silicate minerals. The presence of these minerals in iron-formation along the eastern part of what is known as the Mesabi Iron Range, and their potential liberation by iron mining has raised environmental health concerns. We describe here the geologic setting and mineralogic composition of the Biwabik Iron Formation in and adjacent to the contact metamorphic aureole of the Duluth Complex. The effects of metamorphism are most pronounced within a few kilometers of the contact, and decrease progressively away from it. The contact aureole has been divided into four metamorphic zones-each characterized by the composition and crystal structure of the metamorphic minerals it contains. The recrystallization of iron-formation to iron-rich amphibole minerals (grunerite and cummingtonite) and iron-pyroxene minerals (hedenbergite and ferrohypersthene) is best developed in zones that are most proximal to the Duluth Complex contact.

  7. Characteristics of soil radon transport in different geological formations

    Science.gov (United States)

    Ershaidat, N. M.; Al-Bataina, B. A.; Al-Shereideh, S. A.

    2008-07-01

    Soil radon concentration levels in Deir Abu-Said District, Irbid, Jordan were measured for several depths using CR-39 detectors, in the summer 2004 for six geological formations, namely, Wadi umm ghudran (WG), Wadi esSir “massive” limestone, Amman silicified limestone (ASL), Al-Hisa phosphatic limestone (AHP), Muwaqqar chalky-marl (MCM), and Basalt. Using a model (Yakovleva in Ann Geophys 48(1):195 198, 2005) based on the solution of the diffusion equation in the quasi-homogenous approximation, the characteristics of radon transport were calculated. Radon flux density from the Earth’s surface, the depth Z eq, at which the equilibrium value of soil radon concentration is reached and the convective radon flux velocity ( v) for the different soils are calculated and found to be consistent with similar values presented elsewhere. Calculations indicate that the soil covering WG has a low radon risk while, on the contrary, AHP has a higher radon risk as expected, since AHP has higher content of uranium. The other formations have intermediate values. The results of the present study confirm the statement by Yakovleva (Ann Geophys 48(1):195 198, 2005) that two measurements suffice in order to estimate the characteristics of soil radon transport.

  8. Outstanding diversity of heritage features in large geological bodies: The Gachsaran Formation in southwest Iran

    Science.gov (United States)

    Habibi, Tahereh; Ruban, Dmitry A.

    2017-09-01

    The ideas of geological heritage and geological diversity have become very popular in the modern science. These are usually applied to geological domains or countries, provinces, districts, etc. Additionally, it appears to be sensible to assess heritage value of geological bodies. The review of the available knowledge and the field investigation of the Gachsaran Formation (lower Miocene) in southwest Iran permit to assign its features and the relevant phenomena to as much as 10 geological heritage types, namely stratigraphical, sedimentary, palaeontological, palaeogeographical, geomorphological, hydrogeological, engineering, structural, economical, and geohistorical types. The outstanding diversity of the features of this formation determines its high heritage value and the national rank. The geological heritage of the Gachsaran Formation is important to scientists, educators, and tourists. The Papoon and Abolhaiat sections of this formation are potential geological heritage sites, although these do not represent all above-mentioned types. The large territory, where the Gachsaran Formation outcrop, has a significant geoconservation and geotourism potential, and further inventory of geosites on this territory is necessary. Similar studies of geological bodies in North Africa and the Middle East can facilitate better understanding of the geological heritage of this vast territory.

  9. Geology

    Data.gov (United States)

    Kansas Data Access and Support Center — This database is an Arc/Info implementation of the 1:500,000 scale Geology Map of Kansas, M­23, 1991. This work wasperformed by the Automated Cartography section of...

  10. Bacterial interactions and transport in geological formation of alumino-silica clays.

    Science.gov (United States)

    Vu, Kien; Yang, Guang; Wang, Boya; Tawfiq, Kamal; Chen, Gang

    2015-01-01

    Bacterial transport in the subsurface is controlled by their interactions with the surrounding environment, which are determined by the surface properties of the geological formation and bacterial surfaces. In this research, surface thermodynamic properties of Escherichia coli and the geological formation of alumino-silica clays were characterized based on contact angle measurements, which were utilized to quantify the distance-dependent interactions between E. coli and the geological formation according to the traditional and extended Derjaguin, Landau, Verwey and Overbeek (DLVO) theory. E. coli attachment to alumino-silica clays was evaluated in laboratory columns under saturated and steady-state flow conditions. E. coli deposition coefficient and desorption coefficient were simulated using convection-dispersion transport models against E. coli breakthrough curves, which were then linked to interactions between E. coli and the geological formation. It was discovered that E. coli deposition was controlled by the long-ranged electrostatic interaction and E. coli desorption was attributed to the short-ranged Lifshitz-van der Waals and Lewis acid-base interactions. E. coli transport in three layers of different alumino-silica clays was further examined and the breakthrough curve was simulated using E. coli deposition coefficient and desorption coefficient obtained from their individual column experiments. The well-fitted simulation confirmed that E. coli transport observations were interaction-dependent phenomena between E. coli and the geological formation.

  11. Geologic Mapping of the Medusae Fossae Formation on Mars and the Northern Lowland Plains of Venus

    Science.gov (United States)

    Zimbelman, J. R.

    2009-01-01

    This report summarizes the status of mapping projects supported by NASA grant NNX07AP42G, through the Planetary Geology and Geophysics (PGG) program. The PGG grant is focused on 1:2M-scale mapping of portions of the Medusae Fossae Formation (MFF) on Mars. Also described below is the current status of two Venus geo-logic maps, generated under an earlier PGG mapping grant.

  12. Geologic Mapping of the Medusae Fossae Formation, Mars, and the Northern Lowland Plains, Venus

    Science.gov (United States)

    Zimbelman, J. R.

    2010-01-01

    This report summarizes the status of mapping projects supported by NASA grant NNX07AP42G, through the Planetary Geology and Geophysics (PGG) program. The PGG grant is focused on 1:2M-scale mapping of portions of the Medusae Fossae Formation (MFF) on Mars. Also described below is the current status of two Venus geologic maps, generated under an earlier PGG mapping grant.

  13. International Approaches for Nuclear Waste Disposal in Geological Formations: Geological Challenges in Radioactive Waste Isolation—Fifth Worldwide Review

    Energy Technology Data Exchange (ETDEWEB)

    Faybishenko, Boris [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Birkholzer, Jens [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Sassani, David [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Swift, Peter [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2017-04-26

    The overall objective of the Fifth Worldwide Review (WWR-5) is to document the current state-of-the-art of major developments in a number of nations throughout the World pursuing geological disposal programs, and to summarize challenging problems and experience that have been obtained in siting, preparing and reviewing cases for the operational and long-term safety of proposed and operating nuclear waste repositories. The scope of the Review is to address current specific technical issues and challenges in safety case development along with the interplay of technical feasibility, siting, engineering design issues, and operational and post-closure safety. In particular, the chapters included in the report present the following types of information: the current status of the deep geological repository programs for high level nuclear waste and low- and intermediate level nuclear waste in each country, concepts of siting and radioactive waste and spent nuclear fuel management in different countries (with the emphasis of nuclear waste disposal under different climatic conditions and different geological formations), progress in repository site selection and site characterization, technology development, buffer/backfill materials studies and testing, support activities, programs, and projects, international cooperation, and future plans, as well as regulatory issues and transboundary problems.

  14. Geology and hydrogeology of the Dammam Formation in Kuwait

    Science.gov (United States)

    Al-Awadi, E.; Mukhopadhyay, A.; Al-Senafy, M. N.

    The Dammam Formation of Middle Eocene age is one of the major aquifers containing useable brackish water in Kuwait. Apart from the paleokarst zone at the top, the Dammam Formation in Kuwait consists of 150-200m of dolomitized limestone that is subdivided into three members, on the basis of lithology and biofacies. The upper member consists of friable chalky dolomicrite and dolomite. The middle member is mainly laminated biomicrite and biodolomicrite. The lower member is nummulitic limestone with interlayered shale toward the base. Geophysical markers conform to these subdivisions. Core analyses indicate that the upper member is the most porous and permeable of the three units, as confirmed by the distribution of lost-circulation zones. The quality of water in the aquifer deteriorates toward the north and east. A potentiometric-head difference exists between the Dammam Formation and the unconformably overlying Kuwait Group; this difference is maintained by the presence of an intervening aquitard. Résumé La formation de Damman, d'âge Éocène moyen, est l'un des principaux aquifères du Koweit, contenant de l'eau saumâtre utilisable. A part dans sa partie supérieure où existe un paléokarst, la formation de Damman au Koweit est constituée par 150 à 200m de calcaires dolomitisés, divisés en trois unités sur la base de leur lithologie et de biofaciès. L'unité supérieure est formée d'une dolomicrite crayeuse et friable et d'une dolomie. L'unité médiane est pour l'essentiel une biomicrite laminée et une biodolomicrite. L'unité inférieure est un calcaire nummulitique avec des intercalations argileuses vers la base. Les marqueurs géophysiques sont conformes à ces subdivisions. Les analyses de carottes montrent que l'unité supérieure est la plus poreuse et la plus perméable des trois. La répartition des zones d'écoulement souterrain confirment ces données. La qualité de l'eau dans l'aquifère se dégrade en direction du nord et de l'est. Une

  15. Engineering-geological conditions of the formations in the Western Thessaly basin, Greece

    Science.gov (United States)

    Apostolidis, Emmanuel; Koukis, George

    2013-09-01

    An engineering-geological map of the Western Thessaly basin has been compiled, providing a valuable guide to both urban planning and industrial development of the wider area. This map contributes significantly to the optimization of land use and improved planning of technical work. Additionally, the engineering-geological conditions of the formations encountered in the Western Thessaly basin are examined. The formations are grouped into thirteen (13) engineering-geological entities, with regard to their geotechnical behaviour. This entire study was based on both in situ investigations and geotechnical information extracted from 1,039 boreholes. Furthermore, a landslide inventory map of the Western Thessaly basin has been compiled. In addition, the surface subsidence ruptures, due to ground-water overexploitation, have been examined in the eastern part of the study area.

  16. Multivariate Analysis Of Ground Water Characteristics Of Geological Formations Of Enugu State Of Nigeria

    Directory of Open Access Journals (Sweden)

    Orakwe

    2015-08-01

    Full Text Available Abstract The chemometric data mining techniques using principal factor analysis PFA and hierarchical cluster analysis CA was employed to evaluate and to examine the borehole characteristics of geological formations of Enugu State of Nigeria to determine the latent structure of the borehole characteristics and to classify 9 borehole parameters from 49 locations into borehole groups of similar characteristics. PFA extracted three factors which accounted for a large proportion of the variation in the data 77.305 of the variance. Out of nine parameters examined the first PFA had the highest number of variables loading on a single factor where four borehole parameters borehole depth borehole casing static water level and dynamic water level loaded on it with positive coefficient as the most significant parameters responsible for variation in borehole characteristics in the study. The CA employed in this study to identified three clusters. The first cluster delineated stations that characterise Awgu sandstone geological formation while the second cluster delineated Agbani sandstone geological formation. The third cluster delineated Ajali sandstone formation. The CA grouping of the borehole parameters showed similar trend with PFA hence validating the efficiency of chemometric data mining techniques in grouping of variations in the borehole characteristics in the geological zone of the study area.

  17. Mechanisms for CO2 Sequestration in Geological Formations and Enhanced Gas Recovery

    NARCIS (Netherlands)

    Khosrokhavar, R.

    2014-01-01

    The work described in this thesis deals with a variety of aspects related to the storage of carbon dioxide in geological formations. In particular we focus on the transfer between the gas phase to a fluid (liquid) or solid phase. This thesis limits its interest to study the sequestration capacity of

  18. Mechanisms for CO2 Sequestration in Geological Formations and Enhanced Gas Recovery

    NARCIS (Netherlands)

    Khosrokhavar, R.

    2014-01-01

    The work described in this thesis deals with a variety of aspects related to the storage of carbon dioxide in geological formations. In particular we focus on the transfer between the gas phase to a fluid (liquid) or solid phase. This thesis limits its interest to study the sequestration capacity of

  19. Risk Assessment of Geologic Formation Sequestration in The Rocky Mountain Region, USA

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Si-Yong; McPherson, Brian

    2013-08-01

    The purpose of this report is to describe the outcome of a targeted risk assessment of a candidate geologic sequestration site in the Rocky Mountain region of the USA. Specifically, a major goal of the probabilistic risk assessment was to quantify the possible spatiotemporal responses for Area of Review (AoR) and injection-induced pressure buildup associated with carbon dioxide (CO₂) injection into the subsurface. Because of the computational expense of a conventional Monte Carlo approach, especially given the likely uncertainties in model parameters, we applied a response surface method for probabilistic risk assessment of geologic CO₂ storage in the Permo-Penn Weber formation at a potential CCS site in Craig, Colorado. A site-specific aquifer model was built for the numerical simulation based on a regional geologic model.

  20. Risk Assessment of Geologic Formation Sequestration in The Rocky Mountain Region, USA

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Si-Yong; McPherson, Brian

    2013-08-01

    The purpose of this report is to describe the outcome of a targeted risk assessment of a candidate geologic sequestration site in the Rocky Mountain region of the USA. Specifically, a major goal of the probabilistic risk assessment was to quantify the possible spatiotemporal responses for Area of Review (AoR) and injection-induced pressure buildup associated with carbon dioxide (CO₂) injection into the subsurface. Because of the computational expense of a conventional Monte Carlo approach, especially given the likely uncertainties in model parameters, we applied a response surface method for probabilistic risk assessment of geologic CO₂ storage in the Permo-Penn Weber formation at a potential CCS site in Craig, Colorado. A site-specific aquifer model was built for the numerical simulation based on a regional geologic model.

  1. Modernization of geology and future directions of the raw materials base formation

    Directory of Open Access Journals (Sweden)

    Aleksey Vladimirovich Dushin

    2011-06-01

    Full Text Available This paper gives a brief analysis of the current situation in geology, and makes suggestions for its modernization. As a result of the spontaneous transformation of the institutional environment in subsoil resources management, an institutional trap which hinders the reproduction of mineral resources was formed. On the one hand, the geological assets in the current institutional environment are not attractive for business, and on the other hand, the mechanisms of public funding of geological exploration are being eliminated. The solution of the identified problems, in the opinion of the author, is in an active and systematic implementation of public resources policy in the following areas: balance in the division of responsibility between government and business, balance of responsibilities between the center and regions, liberalization of geological services market and improvement of national resource regime efficiency. Since the early 90s of the last century, there were the processes of deindustrialization and industry primitivization in the Russian economy. Modernization of geology in this paper is defined as an improvement and alignment with current and anticipated requirements of all sectors and areas of the industry functioning. According to the author, it should be brought into compliance with restoration and development of the industrial potential of Russia. The paper identified possible promising directions of domestic industry and geological mineral resources development taking into account the formation of a new technological order. Geological exploration is a sector that creates the resource base for the breathrough industry, including sectors of the new technological order. The need for new materials determines the need for new ideas and new solutions in exploration, production and extraction of mineral resources. Currently, however, we must note that Russia is losing its position in the field of high technologies, both in

  2. Comparison of methods for geologic storage of carbon dioxide in saline formations

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, Angela L. [U.S. DOE; Bromhal, Grant S. [U.S. DOE; Strazisar, Brian [U.S. DOE; Rodosta, Traci D. [U.S. DOE; Guthrie, William J. [U.S. DOE; Allen, Douglas E. [ORISE; Guthrie, George D. [U.S. DOE

    2013-01-01

    Preliminary estimates of CO{sub 2} storage potential in geologic formations provide critical information related to Carbon Capture, Utilization, and Storage (CCUS) technologies to mitigate CO{sub 2} emissions. Currently multiple methods to estimate CO{sub 2} storage and multiple storage estimates for saline formations have been published, leading to potential uncertainty when comparing estimates from different studies. In this work, carbon dioxide storage estimates are compared by applying several commonly used methods to general saline formation data sets to assess the impact that the choice of method has on the results. Specifically, six CO{sub 2} storage methods were applied to thirteen saline formation data sets which were based on formations across the United States with adaptations to provide the geologic inputs required by each method. Methods applied include those by (1) international efforts – the Carbon Sequestration Leadership Forum (Bachu et al., 2007); (2) United States government agencies – U.S. Department of Energy – National Energy Technology Laboratory (US-DOE-NETL, 2012) and United States Geological Survey (Brennan et al., 2010); and (3) the peer-reviewed scientific community – Szulczewski et al. (2012) and Zhou et al. (2008). A statistical analysis of the estimates generated by multiple methods revealed that assessments of CO{sub 2} storage potential made at the prospective level were often statistically indistinguishable from each other, implying that the differences in methodologies are small with respect to the uncertainties in the geologic properties of storage rock in the absence of detailed site-specific characterization.

  3. Geological Model of Member 3 of Shahejie Formation Reservoir in Liuzan Oilfield, Eastern Hebei Province

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A new geological model of Member 3 of Shahejie Formation reservoir in the Liuzan Oilfield, eastern Hebei Province was constructed by using modern reservoir modeling technology as sequence stratigraphy and conditional simulation combined with traditional geological analysis. The model consists of a stratigraphic framework model, a structural model, a sedimentary model and a reservoir model. The study shows that the reservoir is a relatively integrated nose structure, whose strata can be divided into 4 sets of parasequence, 12 parasequences. The submerged branched channel of fan delta front is the favorable microfacies, which controls the geometric shape and physical properties of reservoir sandstone. Oil is distributed in premium reservoir sandstones at structural high positions. According to the new geological model, not only the geological contradictions appearing during oil field development are resolved, but also the oil-bearing area is enlarged by 2.7km2 and geological reserves increased by 156.9 million tons. The production capacity of the Liuzan Oilfield is increased by 0.27 million tons per year.

  4. Estimation of Geologic Storage Capacity of Carbon Dioxide in the Bukpyeong Basin, Korea Using Integrated Three-Dimensional Geologic Formation Modeling and Thermo-Hydrological Numerical Modeling

    Science.gov (United States)

    Kim, J.; Kihm, J.; Park, S.; SNU CO2 GEO-SEQ TEAM

    2011-12-01

    A conventional method, which was suggested by NETL (2007), has been widely used for estimating the geologic storage capacity of carbon dioxide in sedimentary basins. Because of its simple procedure, it has been straightforwardly applied to even spatially very complicate sedimentary basins. Thus, the results from the conventional method are often not accurate and reliable because it can not consider spatial distributions of fluid conditions and carbon dioxide properties, which are not uniform but variable within sedimentary basins. To overcome this limit of the conventional method, a new method, which can consider such spatially variable distributions of fluid conditions and carbon dioxide properties within sedimentary basins, is suggested and applied in this study. In this new method, a three-dimensional geologic formation model of a target sedimentary basin is first established and discretized into volume elements. The fluid conditions (i.e., pressure, temperature, and salt concentration) within each element are then obtained by performing thermo-hydrological numerical modeling. The carbon dioxide properties (i.e., phase, density, dynamic viscosity, and solubility to groundwater) within each element are then calculated from thermodynamic database under corresponding fluid conditions. Finally, the geologic storage capacity of carbon dioxide with in each element is estimated using the corresponding carbon dioxide properties as well as porosity and element volume, and that within the whole sedimentary basin is determined by summation over all elements. This new method is applied to the Bukpyeong Basin, which is one of the prospective offshore sedimentary basins for geologic storage of carbon dioxide in Korea. A three-dimensional geologic formation model of the Bukpyeong Basin is first established considering the elevation data of the boundaries between the geologic formations obtained from seismic survey and geologic maps at the sea floor surface. This geologic

  5. Poromechanical behaviour of a surficial geological barrier during fluid injection into an underlying poroelastic storage formation.

    Science.gov (United States)

    Selvadurai, A P S; Kim, Jueun

    2016-03-01

    A competent low permeability and chemically inert geological barrier is an essential component of any strategy for the deep geological disposal of fluidized hazardous material and greenhouse gases. While the processes of injection are important to the assessment of the sequestration potential of the storage formation, the performance of the caprock is important to the containment potential, which can be compromised by the development of cracks and other defects that might be activated during and after injection. This paper presents a mathematical modelling approach that can be used to assess the state of stress in a surficial caprock during injection of a fluid to the interior of a poroelastic storage formation. Important information related to time-dependent evolution of the stress state and displacements of the surficial caprock with injection rates, and the stress state in the storage formation can be obtained from the theoretical developments. Most importantly, numerical results illustrate the influence of poromechanics on the development of adverse stress states in the geological barrier. The results obtained from the mathematical analysis illustrate that the surface heave increases as the hydraulic conductivity of the caprock decreases, whereas the surface heave decreases as the shear modulus of the caprock increases. The results also illustrate the influence of poromechanics on the development of adverse stress states in the caprock.

  6. Technical support for GEIS: radioactive waste isoltaion in geologic formations. Volume 19. Thermal analyses

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Y/OWI/TM-36/19, ''Thermal Analyses,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This volume discusses the thermal impacts of the isolated high level and spent-fuel wastes in geologic formations. A detailed account of the methodologies employed is given as well as selected results of the analyses.

  7. Geological Carbon Sequestration in the Ohio River Valley: An Evaluation of Possible Target Formations

    Science.gov (United States)

    Dalton, T. A.; Daniels, J. J.

    2009-12-01

    The development of geological carbon sequestration within the Ohio River Valley is of major interest to the national electricity and coal industries because the Valley is home to a heavy concentration of coal-burning electricity generation plants and the infrastructure is impossible to eliminate in the short-term. It has been determined by Ohio's politicians and citizenry that the continued use of coal in this region until alternative energy supplies are available will be necessary over the next few years. Geologic sequestration is the only possible means of keeping the CO2 out of the atmosphere in the region. The cost of the sequestration effort greatly decreases CO2 emissions by sequestering CO2 directly on site of these plants, or by minimizing the distance between fossil-fueled generation and sequestration (i.e., by eliminating the cost of transportation of supercritical CO2 from plant to sequestration site). Thus, the practicality of CO2 geologic sequestration within the Ohio River Valley is central to the development of such a commercial effort. Though extensive work has been done by the Regional Partnerships of the DOE/NETL in the characterization of general areas for carbon sequestration throughout the nation, few projects have narrowed their focus into a single geologic region in order to evaluate the sites of greatest commercial potential. As an undergraduate of the Earth Sciences at Ohio State, I have engaged in thorough research to obtain a detailed understanding of the geology of the Ohio River Valley and its potential for commercial-scale carbon sequestration. Through this research, I have been able to offer an estimate of the areas of greatest interest for CO2 geologic sequestration. This research has involved petrological, mineralogical, geochemical, and geophysical analyses of four major reservoir formations within Ohio—the Rose Run, the Copper Ridge, the Clinton, and the Oriskany—along with an evaluation of the possible effects of injection

  8. Geological component in the formation of natural - reserve fund of Ukraine

    Directory of Open Access Journals (Sweden)

    Manyuk V.V.

    2014-12-01

    Full Text Available The part of geological component of the natural environment in the formation of Natural Reserve Fund of Ukraine, the historical aspects of the origin and development of the geological heritage, as an important part of the environment, as well as the problem of acceptance geodiversity as well as the conservation of biodiversity. It was established that during the long history in countries not only in Europe but also in the world, formed biodiversity strategy in default or unwilling recognition of the need to preserve geodiversity. Underestimating abiotic factors in the development programs of the European environmental network Natura-2000 and EECONET has led to the need to develop special programs and initiatives in the conservation of the lithosphere, atmosphere and hydrosphere. The basic stages of historical development problems of preservation of geological heritage in Ukraine and the world. It is determined that in Ukraine was established May 21, 1910 the first in Russia (which is then part Khortyts'ke Society for Nature Conservation. The Society, based on the initiative of of natural science teachers P.P. Вouzouk, had the goal of nature conservation within the animal, vegetable and mineral kingdoms of nature, and it was spelled out in the Charter of of society. A significant shift towards awareness of the importance of the geological component in the formation of natural reserve fund was effective collaboration with the Department of Environment and Natural Resources in the Dnipropetrovsk region on creation of new protected areas. When conducting a field and office work on reserving areas for new items Natural Heritage, the first fully studied geological and geomorphological structure of these areas. Moreover, the research facility in an unprecedented short time actually bequeathed, that have approved status of natural monuments, landscape reserves and so on.

  9. Argillaceous formations and clays in the context of deep geological radioactive waste disposal in Ukraine

    Energy Technology Data Exchange (ETDEWEB)

    Khrushchov, D.P.; Shekhunova, S.B. [Academy of sciences, Institute of geological science National, Lab. on geological problems of underground space utilization, Kiev (Ukraine)

    2005-07-01

    As present the strategy of central geological repository is aimed at selection of sites in the limits Chernobyl exclusion zone. But this approach meets serious opposition due to unfavorable tectonics. Hence, it is necessary to secure a selection of alternative areas and sites in favorable geological formations. In 90- according to accepted concepts equally with crystalline formations salt and argillaceous ones have been considered. The ranking of formations was as following: crystalline; salt; argillaceous. Promising areas and sites have been selected. Target oriented investigations of argillaceous formations have been carried out on a basis of considering of the following clay rocks peculiarities being of interest from the point of view of radioactive waste disposal, namely: low permeability, high plasticity and rupture dislocations healing ability, chemical inertness as to acids and alkalis, high sorption and ion exchange capacity. Considering the scheme of the territory of the Ukraine subdivision (from the standpoint of radioactive waste disposal) two geological regions including argillaceous formations being characterized with sufficient thickness and acceptable lithological compositions namely: Dniper-Donets depression (including Donbass) and Volyn-Azov plate. Favorable argillaceous series and promising areas have been selected. A set of criteria for selection and preliminary evaluation of sites in argillaceous formations has been developed. This set includes the following criteria: structural, neotectonic, geomorphological, lithological, hydrogeological, geochemical, thermophysical, biochemical. The stage of sites-candidates characterization also have their own peculiarities. The example of argillaceous series role as an additional natural barrier covering salt dome, as a host geological medium for radioactive waste repository, is under consideration. This example is represented with Triassic argillaceous series which overlies some Devonian salt domes in

  10. Numerical simulation of CO2 geological storage in saline aquifers - case study of Utsira formation

    Directory of Open Access Journals (Sweden)

    Zheming Zhang, Ramesh K. Agarwal

    2014-01-01

    Full Text Available CO2 geological storage (CGS is one of the most promising technologies to address the issue of excessive anthropogenic CO2 emissions in the atmosphere due to fossil fuel combustion for electricity generation. In order to fully exploit the storage potential, numerical simulations can help in determining injection strategies before the deployment of full scale sequestration in saline aquifers. This paper presents the numerical simulations of CO2 geological storage in Utsira saline formation where the sequestration is currently underway. The effects of various hydrogeological and numerical factors on the CO2 distribution in the topmost hydrogeological layer of Utsira are discussed. The existence of multiple pathways for upward mobility of CO2 into the topmost layer of Utsira as well as the performance of the top seal are also investigated.

  11. Image Processing on Geological Data in Vector Format and Multi-Source Spatial Data Fusion

    Institute of Scientific and Technical Information of China (English)

    Liu Xing; Hu Guangdao; Qiu Yubao

    2003-01-01

    The geological data are constructed in vector format in geographical information system(GIS) while other data such as remote sensing images, geographical data and geochemical data are saved in raster ones. This paper converts the vector data into 8 bit images according to their importance to mineralization each by programming. We can communicate the geological meaning with the raster images by this method. The paper also fuses geographical data and geochemical data with the programmed strata data. The result shows that image fusion can express different intensities effectively and visualize the structure characters in 2 dimensions. Furthermore, it also can produce optimized information from multi-source data and express them more directly.

  12. Numerical simulation of CO2 geological storage in saline aquifers – case study of Utsira formation

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Zheming; Agarwal, Ramesh K. [Department of Mechanical Engineering and Materials Science, Washington University, St. Louis, MO 63130 (United States)

    2013-07-01

    CO2 geological storage (CGS) is one of the most promising technologies to address the issue of excessive anthropogenic CO2 emissions in the atmosphere due to fossil fuel combustion for electricity generation. In order to fully exploit the storage potential, numerical simulations can help in determining injection strategies before the deployment of full scale sequestration in saline aquifers. This paper presents the numerical simulations of CO2 geological storage in Utsira saline formation where the sequestration is currently underway. The effects of various hydrogeological and numerical factors on the CO2 distribution in the topmost hydrogeological layer of Utsira are discussed. The existence of multiple pathways for upward mobility of CO2 into the topmost layer of Utsira as well as the performance of the top seal are also investigated.

  13. Isotope geochronology of Dapingzhang spilite-keratophyre formation in Yunnan Province and its geological significance

    Institute of Scientific and Technical Information of China (English)

    钟宏; 胡瑞忠; 叶造军; 涂光炽

    2000-01-01

    On the basis of the geological field investigations and isotope geochronological studies the Sm-Nd isochron age (513 Ma?0 Ma), Rb-Sr isochron age (511 Ma? Ma) and K-Ar age (312-317 Ma) of the Dapingzhang spilite-keratophyre formation in Yunnan Province are presented. From these geochronological data it is evidenced that this suite of volcanic rocks was formed in the Cambrian and the parent magma was derived from a depleted mantle, which was influenced by crustal contamination and/or seawater hydrothermal alteration. During the Late Carboniferous the volcanic rocks experienced relatively strong geological reworking. This study provides geochronological evidence for the occurrence of Cambrian volcanic rocks in the Sanjiang (three-river) area.

  14. Isotope geochronology of Dapingzhang spilite-keratophyre formation in Yunnan Province and its geological significance

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    On the basis of the geological field investigations and isotope geochronological studies the Sm-Nd isochron age (513 Ma±40 Ma),Rb-Sr isochron age (511 Ma±8 Ma) and K-Ar age (312-317 Ma) of the Dapingzhang spilite-keratophyre formation in Yunnan Province are presented.From these geochronological data it is evidenced that this suite of volcanic rocks was formed in the Cambrian and the parent magma was derived from a depleted mantle,which was influenced by crustal contamination and/or seawater hydrothermal alteration.During the Late Carboniferous the volcanic rocks experienced relatively strong geological reworking.This study provides geochronological evidence for the occurrence of Cambrian volcanic rocks in the Sanjiang (three-river) area.

  15. Geotechnical characterization and seismic response of shallow geological formations in downtown Lisbon

    Directory of Open Access Journals (Sweden)

    Paula Teves-Costa

    2014-08-01

    Full Text Available  The geological and geotechnical characterization of shallow formations is one of the main steps in performing a microzonation study. This paper presents an example of the usefulness of the information compiled in a geological and geotechnical database for the estimation of the seismic response of the shallower formations of the Lisbon downtown area of Baixa. The geotechnical characterization of this area was performed based on the analysis of Standard Penetration Test (SPT data compiled in the geological and geotechnical database. This database, connected to a geoscientific information system (CGIS, allows, also, the definition of 2D geological profiles used for estimating the thickness of the shallower layers. The shear-wave velocities (VS for each layer were estimated from empirical correlations using mean SPT values computed from the statistical evaluation of the compiled data. These VS values were further calibrated with ambient vibration recording analysis. The seismic response of Baixa’s superficial deposits was estimated by applying a 1D equivalent linear method to a set of soil profiles, regularly distributed across the area, and using synthetic accelerograms to simulate input motions associated with probable earthquake occurrences in Lisbon. The results are presented in terms of maps of predominant frequencies, with the corresponding amplification level, as well as spectral amplification factors for 1 Hz and 2.5 Hz. The results show that the fundamental frequency of the Baixa area is between 1.2 Hz and 2 Hz, for the whole central valley, reaching 3 Hz near the edges where anthroprogenic and alluvial deposits have less expression. Amplification factors up to 5 were obtained. These results were achieved regardless of the considered input motion. The similarity of the obtained fundamental frequency with the natural frequency of Baixa’s old building stock increases the probability of resonance effects in future earthquakes.

  16. Method of detecting leakage from geologic formations used to sequester CO.sub.2

    Science.gov (United States)

    White, Curt; Wells, Arthur; Diehl, J. Rodney; Strazisar, Brian

    2010-04-27

    The invention provides methods for the measurement of carbon dioxide leakage from sequestration reservoirs. Tracer moieties are injected along with carbon dioxide into geological formations. Leakage is monitored by gas chromatographic analyses of absorbents. The invention also provides a process for the early leak detection of possible carbon dioxide leakage from sequestration reservoirs by measuring methane (CH.sub.4), ethane (C.sub.2H.sub.6), propane (C.sub.3H.sub.8), and/or radon (Rn) leakage rates from the reservoirs. The invention further provides a method for branding sequestered carbon dioxide using perfluorcarbon tracers (PFTs) to show ownership.

  17. International Approaches for Nuclear Waste Disposal in Geological Formations: Report on Fifth Worldwide Review

    Energy Technology Data Exchange (ETDEWEB)

    Faybishenko, Boris [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Birkholzer, Jens [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Persoff, Peter [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Sassani, David [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Swift, Peter [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-09-01

    The goal of the Fifth Worldwide Review is to document evolution in the state-of-the-art of approaches for nuclear waste disposal in geological formations since the Fourth Worldwide Review that was released in 2006. The last ten years since the previous Worldwide Review has seen major developments in a number of nations throughout the world pursuing geological disposal programs, both in preparing and reviewing safety cases for the operational and long-term safety of proposed and operating repositories. The countries that are approaching implementation of geological disposal will increasingly focus on the feasibility of safely constructing and operating their repositories in short- and long terms on the basis existing regulations. The WWR-5 will also address a number of specific technical issues in safety case development along with the interplay among stakeholder concerns, technical feasibility, engineering design issues, and operational and post-closure safety. Preparation and publication of the Fifth Worldwide Review on nuclear waste disposal facilitates assessing the lessons learned and developing future cooperation between the countries. The Report provides scientific and technical experiences on preparing for and developing scientific and technical bases for nuclear waste disposal in deep geologic repositories in terms of requirements, societal expectations and the adequacy of cases for long-term repository safety. The Chapters include potential issues that may arise as repository programs mature, and identify techniques that demonstrate the safety cases and aid in promoting and gaining societal confidence. The report will also be used to exchange experience with other fields of industry and technology, in which concepts similar to the design and safety cases are applied, as well to facilitate the public perception and understanding of the safety of the disposal approaches relative to risks that may increase over long times frames in the absence of a successful

  18. Geology of East Egypt greenstone field in Neoproterozoic isoand arc: Reconstruction of Iron formation sedimentary environment.

    Science.gov (United States)

    Kiyokawa, S.; Suzuki, T.

    2015-12-01

    Geology of East Egypt greenstone-granit belt which is northern part of Nubia shield was identified neoproterozoic island arc amalgamated sections. There are several iron formation within these greenstone belt. Age data shows this iron formation may be overlaped during 700 Ma Snowball period, how ever, there is no detail report of well preserved ice related evidences. We now started detail field work for identified tectonic reconstruction, original stratigraphy around Iron formation and sedimentary environment during the iron formation sedimentation area. East Egyptian shield was divided three geology, Proterozoic greenstone complex, 700-600 Granitic domes and cover sequence (Hammamet Group). We focus three area to identified sedimentary environment of iron sedimentation. Along the north-south trend of Wadi EL Dabban area are, we named Wadi branch as West site is RW-0 ~ 12, East site is RE-0 ~ 12 from north to south. Northern area is structurally moderate, southern portion is north dipping. Southern portion was intruded by granite and several place contain granitic dikes. Northeast to eastern area are identified younger sedimentary sequence (Hammamat Group) which is unconformablly overlay on the other iron formation bearing greenstone belt. Structurally these area is divided four units. Wadi was divided by right-lateral strike-ship fault. The displacement are more than 3 km. Also north dipping faults are identified.East-West trend fault are divided two units. It is divided NE, SE, NW and NS units.SW unit is most well preserved thick sequence of the Iron formation. SW unit is well preserved iron formation sequence within thick volcaniclastics. This unit mostly north dipping around 40-60 degree. Structural repetition in not well understand. Reconstract stratigraphy in this unit is at least 4000m in thickness. 5 member is identified in this sequence. Several thin iron formations are observed with in pillow lava and volcaniclastic sequence. These very thick

  19. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 23. Environmental effluent analyses

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Y/OWI/TM-36/23, ''Environmental Effluent Analysis,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Drat Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This volume discusses the releases to the environment of radioactive and non-radioactive materials that arise during facility construction and waste handling operations, as well as releases that could occur in the event of an operational accident. The results of the analyses are presented along with a detailed description of the analytical methodologies employed.

  20. Physicochemical Properties, Micromorphology and Clay Mineralogy of Soils Affected by Geological Formations, Geomorphology and Climate

    Directory of Open Access Journals (Sweden)

    A. Bayat

    2017-01-01

    Full Text Available Introduction: Soil genesis and development in arid and semi-arid areas are strongly affected by geological formations and geomorphic surfaces. Various morphological, physical, and geochemical soil properties at different geomorphic positions are usually attributed to different soil forming factors including parent material and climate. Due to variations in climate, geological formations (Quaternary, Neogene and Cretaceous and geomorphology, the aim of the present research was the study of genesis, development, clay mineralogy, and micromorphology of soils affected by climate, geology and geomorphology in Bardsir area, Kerman Province. Materials and Methods: The study area, 25000 ha, starts from Bardsir and extends to Khanesorkh elevations close to Sirjan city. The climate of the area is warm and semi-arid with mean annual temperature and precipitation of 14.9 °C and 199 mm, respectively. Soil moisture and temperature regimes of the area are aridic and mesic due to 1:2500000 map, provided by Soil and Water Research Institute. Moving to west and southwest, soil moisture regime of the area changes to xeric with increasing elevation. Using topography and geology maps (1:100000 together with Google Earth images, geomorphic surfaces and geologic formations of the area were investigated. Mantled pediment (pedons 1, 3, 7, and 8, rock pediment (pedon 2, semi-stable alluvial plain (pedon 6, unstable alluvial plain (pedon 5, piedmont plain (pedons 9 and 11, intermediate surface of alluvial plain and pediment (pedon 4, and old river terrace (pedon 10 are among geomorphic surfaces investigated in the area. Mantled pediment is composed of young Quaternary sediments and Cretaceous marls. Rock pediments are mainly formed by Cretaceous marls. Quaternary formations are dominant in alluvial plains. Alluvial terraces and intermediate surface of alluvial plain and pediment are dominated by Neogene conglomerates. Siltstone, sandstone, and Neogene marls together with

  1. Lithological architecture, geological processes and energy-field environments are major factors for the formation of hydrocarbon reservoirs

    Institute of Scientific and Technical Information of China (English)

    ZHAO Wenzhi; WANG Zecheng; LI Xiaoqing; WANG Hongjun; WANG Zhaoyun

    2005-01-01

    The formation of hydrocarbon reservoirs is controlled by three major factors: lithological architecture, geological processes and energy-field environments. Among the three major factors, lithological architecture provides the storing medium for hydrocarbon; geological processes include hydrocarbon generation, migration, accumulation, preservation and modification; and energy-field environments refer to the various geothermal and geodynamic forces that affect the lithological architecture and drive the geological processes.In this study, we take Kela-2 and Sulige gas reservoirs as two examples to study relationships among the three major factors, and explain how these factors influence the scale and quality of hydrocarbon reservoirs.

  2. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20160276Jiang Hanbing(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Yang Hequn The Metallogenic Series Family of Geological Formation in Dunhuang Metallogenetic Belt(Northwestern Geology,ISSN1009-6248,CN61-1149/P,48(1),2015,p.63-71,2illus.,2tables,28refs.)

  3. Assessment of potential radionuclide transport in site-specific geologic formations

    Energy Technology Data Exchange (ETDEWEB)

    Dosch, R.G.

    1980-08-01

    Associated with the development of deep, geologic repositories for nuclear waste isolation is a need for safety assessments of the potential for nuclide migration. Frequently used in estimating migration rates is a parameter generally known as a distribution coefficient, K/sub d/, which describes the distribution of a radionuclide between a solid (rock) and a liquid (groundwater) phase. This report is intended to emphasize that the use of K/sub d/ must be coupled with a knowledge of the geology and release scenarios applicable to a repository. Selected K/sub d/ values involving rock samples from groundwater/brine simulants typical of two potential repository sites, WIPP and NTS, are used to illustrate this concern. Experimental parameters used in K/sub d/ measurements including nuclide concentration, site sampling/rock composition, and liquid-to-solid ratios are discussed. The solubility of U(VI) in WIPP brine/groundwater was addressed in order to assess the potential contribution of this phenomena to K/sub d/ values. Understanding mehanisms of sorption of radionuclides on rocks would lead to a better predictive capability. Sorption is attributed to the presence of trace constituents (often unidentified) in rocks. An attempt was made to determine if this applied to WIPP dolomite rocks by comparing sorption behavior of the natural material with that of a synthetic dolomite prepared in the laboratory with reagent grade chemicals. The results were inconclusive. The results of a study of Tc sorption by an argillite sample from the Calico Hills formation at NTS under ambient laboratory conditions were more conclusive. The Tc sorption was found to be associated with elemental carbon. Available evidence points to a reduction mechanism leading to the apparent sorption of Tc on the solid phase.

  4. A Study of Geological Formation on Different Sites in Batu Pahat, Malaysia Based On HVSR Method Using Microtremor Measurement

    Science.gov (United States)

    Noor, M. A. M.; Madun, A.; Kamarudin, A. F.; Daud, M. E.

    2016-07-01

    Geological formation is a one of information need to know during site reconnaissance. Conventional method like borehole has been known is very accurate to identify the formation of geology of a site. However, the problem of this technique is very expensive and not economical for large area. In the last decade, microtremor measurement has been introduced as an alternative technique and widely used in the geological formation study. Therefore, the aim in this study is to determine the geological formation underneath of surface in Batu Pahat district using microtremor measurement. There are two parameters have been carried out from microtremor measurement in term of natural frequency and HVSR curves images. Microtremor measurements are done conducted at 15 sites surrounding of Batu Pahat. Horizontal to vertical spectral ratio (HVSR) method was used for analyzing microtermor measurement data, to determine the natural frequency and also HVSR curves image. In this study, values of natural frequencies are used to classify the soil types with range in the between 0.93 to 5.35 Hz, meanwhile the pattern of HVSR curve images has been shown exists a few groups of soil types surrounding Batu Pahat district. Hence, microtremor measurement indirectly can be used as a one technique to add value in the site reconnaissance in the future.

  5. Microbial characterization of basalt formation waters targeted for geological carbon sequestration.

    Science.gov (United States)

    Lavalleur, Heather J; Colwell, Frederick S

    2013-07-01

    Geological carbon sequestration in basalts is a promising solution to mitigate carbon emissions into the Earth's atmosphere. The Wallula pilot well in Eastern Washington State, USA provides an opportunity to investigate how native microbial communities in basalts are affected by the injection of supercritical carbon dioxide into deep, alkaline formation waters of the Columbia River Basalt Group. Our objective was to characterize the microbial communities at five depth intervals in the Wallula pilot well prior to CO2 injection to establish a baseline community for comparison after the CO2 is injected. Microbial communities were examined using quantitative polymerase chain reaction to enumerate bacterial cells and 454 pyrosequencing to compare and contrast the diversity of the native microbial communities. The deepest depth sampled contained the greatest amount of bacterial biomass, as well as the highest bacterial diversity. The shallowest depth sampled harbored the greatest archaeal diversity. Pyrosequencing revealed the well to be dominated by the Proteobacteria, Firmicutes, and Actinobacteria, with microorganisms related to hydrogen oxidizers (Hydrogenophaga), methylotrophs (Methylotenera), methanotrophs (Methylomonas), iron reducers (Geoalkalibacter), sulfur oxidizers (Thiovirga), and methanogens (Methermicocccus). Thus, the Wallula pilot well is composed of a unique microbial community in which hydrogen and single-carbon compounds may play a significant role in sustaining the deep biosphere.

  6. Deep geological disposal in argillaceous formations: studies at the Tournemire test site

    Science.gov (United States)

    Bonin, B.

    1998-12-01

    Deep argillaceous formations are potential host media for radioactive waste disposal. The French Institute of Protection and Nuclear Safety (IPSN) is developing in situ studies concerning the confining properties of this kind of geological barrier at the Tournemire tunnel site (Aveyron, France). The past research programme covered physical and physico-chemical properties of the consolidated argillaceous medium, diffusive and convective transport; rock and water chemistry and long-term behaviour of the host rock. Investigations conclude that fluid circulations in the unperturbed matrix are very slow. However, past tectonic events have induced fractures which might accelerate these circulations. The hydraulic role of fractures in this type of rocks is poorly known. A detailed study of the role of these fractures is presently under way. Moreover, the 100-year old tunnel exhibits a very clear `Excavation-Damaged Zone' (EDZ), with large fractures which might drain water rather quickly over long distances. The mechanical, hydraulic and physico-chemical properties of the EDZ are being investigated. The present paper summarizes the results obtained so far at Tournemire, and the current research orientations.

  7. Geology and paleontology of the reef facies of the Pirabas Formation (Early Miocene

    Directory of Open Access Journals (Sweden)

    Vladimir de Araújo Távora

    2013-09-01

    Full Text Available This work concerns with the detailed geological and paleontological study of the reef facies of the Pirabas Formation, that outcrop at the Maçarico beach, of Salinópolis district, Pará State, as a small, isolated and lenticular sedimentary bodie developed in the inner platform inner ramp of the Pirabas Sea. The biotic constituents are diverse and composed by three groups of coralline algae, sponges, corals, bryozoans, echinoids, foraminifera, ostracodes and molluscs. Three stages of the ecologic sucession were recognized in this patch reef: stabilization, colonization and diversification. Thin micritic crusts, recognized at top of the beds in diversification stage suggest the degradation of the environmental conditions favorable to reef accretion probably due to continentalization of the depositional site. The petrographic investigation reveals only one, homogeneous depositional microfacies, named biomicrite, without compositional and textural changes. The marine cementation is represented by microcrystalline agglomerates and micritic cement, locally neomorphosed to biosparite and detrital carbonatic components of the unconsolidated biogenic debris, resulted from the disintegration of the aragonite from the algalic remains accumulated as micritic mud. In the construction of the reef framework the red macroalgae were fundamental to the lithification and building of the framework, and very important to the protection and cementation of the others constituents.

  8. Mixing and trapping of dissolved CO2 in deep geologic formations with shale layers

    Science.gov (United States)

    Agartan, Elif; Cihan, Abdullah; Illangasekare, Tissa H.; Zhou, Quanlin; Birkholzer, Jens T.

    2017-07-01

    For dissolution trapping, the spatial variability of the geologic properties of naturally complex storage formations can significantly impact flow patterns and storage mechanisms of dissolved CO2. The significance of diffusive mixing that occurs in low permeability layers embedded between relatively higher permeability materials was highlighted by Agartan et al. (2015) using a highly controlled laboratory experimental study on trapping of dissolved CO2 in multilayered systems. In this paper, we present a numerical modeling study on the impacts of low permeability layers on flow and storage of dissolved CO2 in realistic field-scale settings. The simulator of variable-density flow used in this study was first verified using the experimental data in Agartan et al. (2015) to capture the observed processes. The simulator was then applied to a synthetic, field-scale multilayered system, with 19 sensitivity cases having variable permeability and thickness of the shale layers as well as the source strength and geometry of the source zone of dissolved CO2. Simulation results showed that the presence of continuous shale layers in the storage system disrupts the convective mixing by enhancing lateral spreading of dissolved CO2 in sandstone layers and retarding the vertical mixing of dissolved CO2. The effectiveness of trapping of dissolved CO2 depends on the physical properties of the shale layers and configurations of the source zone. The comparison to homogeneous cases with effective vertical permeability shows that it is important to capture these continuous thin shale layers in a storage formation and include them in the models to enhance dissolution trapping.

  9. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 7. Baseline rock properties-basalt

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Y/OWI/TM-36/7 Baseline Rock Properties--Basalt, is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations, Y/OWI/TM-36'' which supplements a ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations, Y/OWI/TM-44.'' The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This report contains an evaluation of the results of a literature survey to define the rock mass properties of a generic basalt, which could be considered as a geological medium for storing radioactive waste. The general formation and structure of basaltic rocks is described. This is followed by specific descriptions and rock property data for the Dresser Basalt, the Amchitka Island Basalt, the Nevada Test Site Basalt and the Columbia River Group Basalt. Engineering judgment has been used to derive the rock mass properties of a typical basalt from the relevant intact rock property data and the geological information pertaining to structural defects, such as joints and faults.

  10. Microbial and Chemical Enhancement of In-Situ Carbon Mineralization in Geological Formation

    Energy Technology Data Exchange (ETDEWEB)

    Matter, J.; Chandran, K.

    2013-05-31

    Predictions of global energy usage suggest a continued increase in carbon emissions and rising concentrations of CO{sub 2} in the atmosphere unless major changes are made to the way energy is produced and used. Various carbon capture and storage (CCS) technologies are currently being developed, but unfortunately little is known regarding the fundamental characteristics of CO{sub 2}-mineral reactions to allow a viable in-situ carbon mineralization that would provide the most permanent and safe storage of geologically-injected CO{sub 2}. The ultimate goal of this research project was to develop a microbial and chemical enhancement scheme for in-situ carbon mineralization in geologic formations in order to achieve long-term stability of injected CO{sub 2}. Thermodynamic and kinetic studies of CO{sub 2}-mineral-brine systems were systematically performed to develop the in-situ mineral carbonation process that utilizes organic acids produced by a microbial reactor. The major participants in the project are three faculty members and their graduate and undergraduate students at the School of Engineering and Applied Science and at the Lamont-Doherty Earth Observatory at Columbia University: Alissa Park in Earth and Environmental Engineering & Chemical Engineering (PI), Juerg Matter in Earth and Environmental Science (Co-PI), and Kartik Chandran in Earth and Environmental Engineering (Co-PI). Two graduate students, Huangjing Zhao and Edris Taher, were trained as a part of this project as well as a number of graduate students and undergraduate students who participated part-time. Edris Taher received his MS degree in 2012 and Huangjing Zhao will defend his PhD on Jan. 15th, 2014. The interdisciplinary training provided by this project was valuable to those students who are entering into the workforce in the United States. Furthermore, the findings from this study were and will be published in referred journals to disseminate the results. The list of the papers is given at

  11. LA-ICP-MS dating of Zhangjiakou Formation volcanic rocks in the Zhangjiakou region and its geological significance

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The geological cross section of the Zhangjiakou Formation is originally established in the Zhangjiakou region. From the dating of four samples from typical cross sections of the Zhangjiakou Formation in the Zhangjiakou region, the age range is found to be mainly from 143.0±3.7 Myr to 136.1±1.4 Myr, which almost equals the sum of the age range of the Zhangjiakou Formation (136-135 Myr) and that of the Tuchengzi Formation (143-136 Myr) in the Luanping region, and the Zhangjiakou and Tuchengzi Formations in Zhang- jiakou-Luanping of North Hebei are found to be conformable. The evidence above indicates that the Zhangjiakou and Tuchengzi For- mations, which are distributed in Zhangjiakou-Luanping, were formed under the same geological setting. Volcanic activity was earlier and longer (143-136 Myr) in the western region (Zhangjiakou) than that in the eastern region (Luanping). The "Zhangjiakou Forma- tion" in Chengde and Pingquan formed in the period in which the Yixian Formation in West Liaoning formed, so should be renamed the Yixian Formation.

  12. Geologic constraints on kinematic models and age of formation of the Amerasia Basin of the Arctic

    Science.gov (United States)

    Miller, E. L.

    2015-12-01

    A wealth of new geologic and geophysical data now exist for the Amerasia Basin, but the details of its age and the nature/kinematics of events that resulted in its formation remain elusive. Basement rock ages, detrital zircon signatures of sedimentary rocks, and sediment dispersal systems have been used to show how parts of the southern margin(s) of the Amerasia Basin (Arctic Alaska-Chukotka, AAC) match their rifted margin counterparts on the Eurasia and Canada side of the Amerasia Basin. Thus we know the approximate finite translations needed to restore the paleogeography of the Arctic, but not the kinematics involved. Important features of the Amerasia Basin that need to be explained in a model for its opening are the age and extent of the high Arctic LIP, the linearity of the strip of continental crust represented by the Lomonosov Ridge, its right angle intersection with the Canadian Arctic margin, and the directional fault patterns mapped bathymetrically and seismically across the Alpha-Lomonosov Ridge and surrounding seafloor. Across AAC, post-Early Cretaceous oroclinal bends provide insight into strike-slip components of deformation involved in opening of the Amerasia Basin: The Chukchi syntax offsets the Brooks Range in a right-lateral sense from Wrangel Island along the Herald Arch; right-lateral motion of Arctic Alaska with respect to the Chukchi Borderland during opening of the Canada Basin; right-lateral shear in Chukotka during 100 Ma magmatism; the tight bend in the northern Verkhoyansk, result of Cretaceous right-lateral shear. The land-based relationships imply a post-Early Cretaceous, younger than Barremian (~130 Ma) age for onset of magmatism and extension related to rifting and formation of the Amerasia Basin. At least two stages of extension are documented, with older E-W extension characterizing the longitude of the New Siberian Islands to Pevek, Russian Arctic, (ca.125 Ma to 100 Ma), with younger N-S extension superimposed on this system (ca

  13. Statistical characterisation and stochastic parameterisation of sedimentary geological formations on their reaction capacity for sustainable groundwater quality management

    OpenAIRE

    Griffioen, J.; Vermooten, S.; Keijzer, T.; Bakr, M; Valstar, J.

    2012-01-01

    The fate of contaminants in groundwater aquifers is determined by the buffering capacity of those aquifers together with the composition of inflowing groundwater. A nationwide characterisation of the environmental geochemistry of the shallow subsurface (down to 30 m below surface) has been started in the Netherlands. This covers: 1. the reaction capacity of sediments as buffer for contamination, and 2. typical elemental composition of geological formations and the association between trace el...

  14. Lithofacies and sequence stratigraphic description of the upper part of the Avon Park Formation and the Arcadia Formation in U.S. Geological Survey G–2984 test corehole

    Science.gov (United States)

    Cunningham, Kevin J.; Robinson, Edward

    2017-07-18

    Rock core and sediment from U.S. Geological Survey test corehole G–2984 completed in 2011 in Broward County, Florida, provide an opportunity to improve the understanding of the lithostratigraphic, sequence stratigraphic, and hydrogeologic framework of the intermediate confining unit and Floridan aquifer system in southeastern Florida. A multidisciplinary approach including characterization of sequence stratigraphy, lithofacies, ichnology, foraminiferal paleontology, depositional environments, porosity, and permeability was used to describe the geologic samples from this test corehole. This information has produced a detailed characterization of the lithofacies and sequence stratigraphy of the upper part of the middle Eocene Avon Park Formation and Oligocene to middle Miocene Arcadia Formation. This enhancement of the knowledge of the sequence stratigraphic framework is especially important, because subaerial karst unconformities at the upper boundary of depositional cycles at various hierarchical scales are commonly associated with secondary porosity and enhanced permeability in the Floridan aquifer system.

  15. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 10. Repository preconceptual design studies: granite

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Volume 10 ''Repository Preconceptual Design Studies: Granite,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This document describes a preconceptual design for a nuclear waste storage facility in granite. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area, and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/11, ''Drawings for Repository Preconceptual Design Studies: Granite.''

  16. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 8. Repository preconceptual design studies: salt

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Volume 8 ''Repository Preconceptual Design Studies: Salt,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This document describes a preconceptual design for a nuclear waste storage facility in salt. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area, and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/9, ''Drawings for Repository Preconceptual Design Studies: Salt.''

  17. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    <正>20050576 Li Sanzhong (College of Marine Geosciences, Ocean University of China, Qingdao 266003,China) ; Zhou Lihong Cenozoic Faulting and Basin Formation in the Eastern North China Plate (Marine Geology & Quaternary Geology, ISSN 0256 - 1492, CN37 -1117/P, 24(3), 2004, p. 57-66, 5 illus. , 33 refs. ) Key words: tectonic framework, North China

  18. Volcanostratigraphic Sequences of Kebo-Butak Formation at Bayat Geological Field Complex, Central Java Province and Yogyakarta Special Province, Indonesia

    Directory of Open Access Journals (Sweden)

    Sri Mulyaningsih

    2016-08-01

    Full Text Available Bayat Complex is usually used as a work field for students of geology and other geosciences. The study area is located in the southern part of the Bayat Complex. Administratively, it belongs to Central Java Province and Yogyakarta Special Province. The lithology of Bayat is very complex, composed of various kinds of igneous, sedimentary, metamorphic, and volcanic rocks. Most of previous researchers interpreted Bayat as a melange complex constructed within a subduction zone. Kebo-Butak is one of formations that forms the Bayat field complex. The formation is composed of basalt, layers of pumice, tuff, shale, and carbonaceous tuff. Most of them are known as volcanic rocks. These imply that volcanic activities are more probable to construct the geology of Bayat rather than the subducted melange complex. The geological mapping, supported by geomorphology, petrology, stratigraphy, and geological structures, had been conducted in a comprehensive manner using the deduction-induction method. The research encounters basalt, black pumice, tuff with basaltic glasses fragments, zeolite, argilic clay, as well as feldspathic- and pumice tuff. Petrographically, the basalt is composed of labradorite, olivine, clinopyroxene, and volcanic glass. Black pumice and tuff contain prismatic clinopyroxene, granular olivine, and volcanic glasses. Feldspathic tuff and pumice tuff are crystal vitric tuff due to more abundant feldspar, quartz, and amphibole than volcanic glass. Zeolite comprises chlorite and altered glasses as deep sea altered volcanic rocks. The geologic structure is very complex, the major structures are normal faults with pyrite in it. There were two deep submarine paleovolcanoes namely Tegalrejo and Baturagung. The first paleovolcano erupted effusively producing basaltic sequence, while the second one erupted explosively ejecting feldspathic-rich pyroclastic material. The two paleovolcanoes erupted simultaneously and repeatedly.

  19. Statistical characterisation and stochastic parameterisation of sedimentary geological formations on their reaction capacity for sustainable groundwater quality management

    Science.gov (United States)

    Griffioen, J.; Vermooten, S.; Keijzer, T.; Bakr, M.; Valstar, J.

    2012-04-01

    The fate of contaminants in groundwater aquifers is determined by the buffering capacity of those aquifers together with the composition of inflowing groundwater. A nationwide characterisation of the environmental geochemistry of the shallow subsurface (down to 30 m below surface) has been started in the Netherlands. This covers: 1. the reaction capacity of sediments as buffer for contamination, and 2. typical elemental composition of geological formations and the association between trace elements and major minerals. For this purpose, the Netherlands is subdivided into 27 so-called geotop regions each having a unique geological build-up of the shallow subsurface. Here, four types are recognised based on vertical hydrogeological build-up. The regions are statistically characterised on their geochemical composition using combinations of lithological class and geological formation as strata. The statistical data are subsequently coupled with a geological voxel model of the subsurface to stochastically parameterise the geological units on reaction capacity. This combined approach will be illustrated for the Dutch province Zeeland. Reaction capacity is considered as a series of geochemical characteristics that control acid/base condition, redox condition and sorption capacity. Five primary reaction capacity variables are characterised: 1. pyrite, 2. non-pyrite, reactive iron (oxides, siderite and glauconite), 3. clay fraction, 4. organic matter and 5. Ca-carbonate. Important reaction capacity variables that are determined by more than one solid compound are also deduced: 1. potential reduction capacity (PRC) by pyrite and organic matter, 2. cation-exchange capacity (CEC) by organic matter and clay content, 3. carbonate buffering upon pyrite oxidation (CPBO) by carbonate and pyrite. A statistical investigation of several hunderds of sediment analyses is performed that provides the geochemical properties of the sediments. Here, classification based on sedimentary facies

  20. Numerical Simulation of Behavior of Carbon Dioxide Injected into Target Geologic Formations in the Bukpyeong Basin, Korea

    Science.gov (United States)

    Kihm, J.; Park, S.; Kim, J.

    2013-12-01

    A series of thermo-hydrological numerical simulations was performed to predict and analyze behavior of carbon dioxide injected into target geologic formations in the Bukpyeong Basin, which is one of the prospective offshore basins for geologic carbon dioxide storage in Korea. The results of the numerical simulations for the two areas in the basin show that the spatial distribution, structure (layered structure), and hydrological properties (anisotropy of intrinsic permeability) of the target geologic formations have significant impacts on three-dimensional behavior of carbon dioxide injected. The horizontal movement of carbon dioxide along the spatial distribution of a target geologic formation (Unit C-4) is more dominant than the vertical movement. As the injection amount of carbon dioxide increases, carbon dioxide plume expands furthermore and reaches to the shallower depth region from the mean sea level. Even in case of the maximum injection amount of carbon dioxide, carbon dioxide does not leak through the top boundary (sea floor) of the modeling domain for both areas. It indicates that carbon dioxide can be stored in the two areas up to their effective storage capacities of free fluid phase carbon dioxide, which was estimated in authors' previous study. As time progresses, carbon dioxide stored by hydrodynamic trapping decreases, while carbon dioxide stored by solubility trapping increases. The total mass of carbon dioxide stored by solubility trapping evaluated in this study is significantly greater than that estimated in authors' previous study. It indicates that the storage efficiency of aqueous phase carbon dioxide is greater than that of free fluid phase carbon dioxide. Therefore, this difference in the storage efficiencies of the free fluid and aqueous phases of carbon dioxide must be properly considered when more rigorous effective storage capacities of carbon dioxide are to be estimated on basin and even site scales. This work was supported by the

  1. Enhanced Historical Land-Use and Land-Cover Data Sets of the U.S. Geological Survey: polygon format files

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This data set depicts land use and land cover from the 1970s and 1980s and has been previously published by the U.S. Geological Survey (USGS) in other file formats....

  2. Enhanced Historical Land-Use and Land-Cover Data Sets of the U.S. Geological Survey: raster format files

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This data set depicts land use and land cover from the 1970s and 1980s and has been previously published by the U.S. Geological Survey (USGS) in other file formats....

  3. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 21. Ground water movement and nuclide transport

    Energy Technology Data Exchange (ETDEWEB)

    None

    1978-04-01

    This volume, TM-36/21 Ground Water Movement and Nuclide Transport, is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations, Y/OWI/TM-36'' which supplements a ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations, Y/OWI/TM-44.'' The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling of spent fuel and uranium-only recycling. The studies presented in this volume consider the effect of the construction of the repository and the consequent heat generation on the ground water movement. Additionally, the source concentrations and leach rates of selected radionuclides were studied in relation to the estimated ground water inflow rates. Studies were also performed to evaluate the long term migration of radionuclides as affected by the ground water flow. In all these studies, three geologic environments are considered; granite, shale and basalt.

  4. Multispectral Thermal Imagery and Its Application to the Geologic Mapping of the Koobi Fora Formation, Northwestern Kenya

    Energy Technology Data Exchange (ETDEWEB)

    Green, Mary K. [Univ. of New Mexico, Albuquerque, NM (United States)

    2005-12-01

    The Koobi Fora Formation in northwestern Kenya has yielded more hominin fossils dated between 2.1 and 1.2 Ma than any other location on Earth. This research was undertaken to discover the spectral signatures of a portion of the Koobi Fora Formation using imagery from the DOE's Multispectral Thermal Imager (MTI) satellite. Creation of a digital geologic map from MTI imagery was a secondary goal of this research. MTI is unique amongst multispectral satellites in that it co-collects data from 15 spectral bands ranging from the visible to the thermal infrared with a ground sample distance of 5 meters per pixel in the visible and 20 meters in the infrared. The map was created in two stages. The first was to correct the base MTI image using spatial accuracy assessment points collected in the field. The second was to mosaic various MTI images together to create the final Koobi Fora map. Absolute spatial accuracy of the final map product is 73 meters. The geologic classification of the Koobi Fora MTI map also took place in two stages. The field work stage involved location of outcrops of different lithologies within the Koobi Fora Formation. Field descriptions of these outcrops were made and their locations recorded. During the second stage, a linear spectral unmixing algorithm was applied to the MTI mosaic. In order to train the linear spectra unmixing algorithm, regions of interest representing four different classes of geologic material (tuff, alluvium, carbonate, and basalt), as well as a vegetation class were defined within the MTI mosaic. The regions of interest were based upon the aforementioned field data as well as overlays of geologic maps from the 1976 Iowa State mapping project. Pure spectra were generated for each class from the regions of interest, and then the unmixing algorithm classified each pixel according to relative percentage of classes found within the pixel based upon the pure spectra values. A total of four unique combinations of geologic

  5. MAPPING SUBSURFACE FORMATIONS ON THE EASTERN RED SEA COAST IN JORDAN USING GEOELECTRICAL TECHNIQUES: GEOLOGICAL AND HYDROGEOLOGICAL IMPLICATIONS

    Directory of Open Access Journals (Sweden)

    Batayneh Awni T.

    2007-12-01

    Full Text Available During 2006, geoelectrical measurements using the vertical electrical sounding (VES method were conducted on the eastern Red Sea coast in Jordan, using the SYSCAL-R2 resistivity instrument.
    The objectives of the study were (i to evaluate the possibility of mapping of Quaternary sediments medium in areas where little is known about the subsurface geology and to infer shallow geological
    structure from the electrical interpretation, and (ii to identify formations that may present fresh aquifer waters, and subsequently to estimate the relationship between groundwater resources and geological structures. Data collected at 47 locations were interpreted first with curve matching techniques, using theoretically calculated master curves, in conjunction with the auxiliary curves. The initial earth
    models were second checked and reinterpreted using a 1-D inversion program (i.e., RESIX-IP in order to obtain final earth models. The final layer parameters (thicknesses and resistivities were then
    pieced together along survey lines to make electrical cross sections. Resistivity measurements show a dominant trend of decreasing resistivity (thus increasing salinity with depth and westward toward
    the Red Sea. Accordingly, three zones with different resistivity values were detected, corresponding to three different bearing formations: (i a water-bearing formation in the west containing Red Sea saltwater; (ii a transition zone of clay and clayey sand thick formation; (iii stratas saturated with fresh groundwater in the east disturbed by the presence of clay and clayey sand horizons. Deep borehole (131 m drilled in the northwestern part of the study area for groundwater investigation, has
    confirmed the findings of the resistivity survey.

  6. Numerical Simulation of Impacts of Hydrological Properties of Geologic Storage Formations on Injection Efficiency of Carbon Dioxide

    Science.gov (United States)

    Kihm, J.; Kim, J.

    2010-12-01

    A series of numerical simulations using a multiphase thermo-hydrological numerical model is performed to analyze groundwater flow, carbon dioxide flow, and heat transport due to geologic storage of carbon dioxide in a geologic storage formation (sandstone aquifer) and to evaluate impacts of its saturated (i.e., porosity and intrinsic permeability) and unsaturated (i.e., residual water saturation, residual gas saturation, gas-entry pressure, and van Genuchten’s exponent) hydrological properties on the injection efficiency of carbon dioxide. The numerical simulation results show that the hydrological properties of the storage formation have significant effects on the injection efficiency of carbon dioxide. Under a constant injection pressure of carbon dioxide, the injection rate and injectivity of carbon dioxide increase rapidly during the early period of carbon dioxide injection (about 2 weeks) and then increases monotonously until the end of carbon dioxide injection. The injection rate and injectivity of carbon dioxide are most sensitive to variations in the intrinsic permeability and van Genuchten’s exponent of the storage formation. They increase significantly as the intrinsic permeability and van Genuchten’s exponent of the storage formation increase, whereas they decrease slightly as the porosity and the residual gas saturation of the storage formation increase. However, they are most insensitive to variations in the residual water saturation and the gas-entry pressure of the storage formation. These results indicate that the injection efficiency of carbon dioxide is significantly dependent on the relative permeability, which is a function of the unsaturated hydrological properties (i.e., residual water saturation, residual gas saturation, gas-entry pressure, and van Genuchten’s exponent) of the storage formation, as well as its saturated hydrological properties (i.e., porosity and intrinsic permeability) in different degrees. Therefore it may be

  7. Post-Neogene Structural Evolution:An Important Geological Stage in the Formation of Gas Reservoirs in China

    Institute of Scientific and Technical Information of China (English)

    WANG Tingbin

    2004-01-01

    Tectonic movements since the Neogene have been the major developmental and evolutional stages of the latest global crustal deformation and orogenic movements. China is located in a triangular area bounded by the Indian landmass, the West Siberian landmass and the Pacific Plate, characterized by relatively active tectonic movements since the Neogene, and in this region, natural gas would have been very easy to dissipate, or difficult to preserve. Therefore, the characteristics of post-Neogene tectonic movements offer important geological factors in researching the formation and preservation of gas reservoirs in China. Summarizing the reservoiring history of gas fields in China, although there are some differences between various basins, they are all affected by the tectonic movements since the Neogene. These movements have certainly caused destruction to the reservoiring and distribution of natural gas in China, which has resulted in a certain dissipation of natural gas in some basins. As a whole, however, they have mainly promoted the reservoiring and accumulation of natural gas: (1) a series of China-type foreland basins have been formed between basins and ridges in western China, which provide favorable conditions for the formation of large and medium gas fields, as well as controlling the finalization of gas reservoirs in the basins; (2) rows and belts of anticlines have been formed in the Sichuan Basin in central China, which have been the major stages of the formation and finalization of gas reservoirs in that basin; the integral and quick rising and lifting, and a further west-dipping in the Ordos Basin have resulted in a further accumulation of natural gas in gas fields from Jingbian to Uxin; (3) in eastem China, the Bohai movement in the late Pliocene has provided favorable geological conditions for lately-formed gas reservoirs in the Bohai Sea area mainly composed of the Bozhong depression; and it also resulted in secondary hydrocarbon generation and

  8. A New SHRIMP Age of the Xiamaling Formation in the North China Plate and Its Geological Significance

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Setting up the hypostratotype of late Precambrian is the main aim of the research on the Meso- and Neoproterozoic in North China. The chronostratigraphic position is the key in this study.However, many key horizons have not been calibrated with the high-quality isotopic ages. Using the reported new U-Pb age with the Sensitive High-Resolution Ion Microprobe (SHRIMP H), a zircon UPb age was obtained of the ash bed in the Xiamaling Formation in North China Plate, yielding a weighted mean 206Pb/238U age of 1368±12 Ma. It is the first SHRIMP U-Pb age from the Xiamaling Formation in the North China Plate, and represents the depositing time of the middle part of the Xiamaling Formation. The zircon age plays an important role to understanding geological evolution of the North China Plate during Meso- and Neoproterozoic.

  9. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 14. Repository preconceptual design studies: basalt

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This document describes a preconceptual design for a nuclear waste storage facility in basalt. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/15, ''Drawings for Repository Preconceptual Design Studies: Basalt.''

  10. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 12. Repository preconceptual design studies: shale

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This document describes a preconceptual design for a nuclear waste storage facility in shale. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area, and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/13, ''Drawings for Repository Preconceptual Design Studies: Shale.''

  11. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 22. Nuclear considerations for repository design

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Y/OWI/TM-36/22, ''Nuclear Considerations for Repository Design,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. Included in this volume are baseline design considerations such as characteristics of canisters, drums, casks, overpacks, and shipping containers; maximum allowable and actual decay-heat levels; and canister radiation levels. Other topics include safeguard and protection considerations; occupational radiation exposure including ALARA programs; shielding of canisters, transporters and forklift trucks; monitoring considerations; mine water treatment; canister integrity; and criticality calculations.

  12. Heterogeneity-enhanced gas phase formation in shallow aquifers during leakage of CO2-saturated water from geologic sequestration sites

    Science.gov (United States)

    Plampin, Michael R.; Lassen, Rune N.; Sakaki, Toshihiro; Porter, Mark L.; Pawar, Rajesh J.; Jensen, Karsten H.; Illangasekare, Tissa H.

    2014-12-01

    A primary concern for geologic carbon storage is the potential for leakage of stored carbon dioxide (CO2) into the shallow subsurface where it could degrade the quality of groundwater and surface water. In order to predict and mitigate the potentially negative impacts of CO2 leakage, it is important to understand the physical processes that CO2 will undergo as it moves through naturally heterogeneous porous media formations. Previous studies have shown that heterogeneity can enhance the evolution of gas phase CO2 in some cases, but the conditions under which this occurs have not yet been quantitatively defined, nor tested through laboratory experiments. This study quantitatively investigates the effects of geologic heterogeneity on the process of gas phase CO2 evolution in shallow aquifers through an extensive set of experiments conducted in a column that was packed with layers of various test sands. Soil moisture sensors were utilized to observe the formation of gas phase near the porous media interfaces. Results indicate that the conditions under which heterogeneity controls gas phase evolution can be successfully predicted through analysis of simple parameters, including the dissolved CO2 concentration in the flowing water, the distance between the heterogeneity and the leakage location, and some fundamental properties of the porous media. Results also show that interfaces where a less permeable material overlies a more permeable material affect gas phase evolution more significantly than interfaces with the opposite layering.

  13. PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>20122476 Bao Yunjie ( Wuxi Research Institute of Petroleum Geology,SINOPEC,Wuxi 214151,China );Wang Shuyi Reservoir Diagenesis of 3rd Member of Feixianguan Formation,Jiannan Gas Field ( Petroleum Geology & Experiment,ISSN1001-6112,CN32-1151 / TE,33 ( 6 ), 2011,p.564-568,2 il-lus.,1plate,2tables,10refs. ) Key words:carbonate reservoirs,diagenesis,Chongqing,Hubei Province

  14. Chemical composition and geologic history of saline waters in Aux Vases and Cypress Formations, Illinois Basin

    Science.gov (United States)

    Demir, I.; Seyler, B.

    1999-01-01

    Seventy-six samples of formation waters were collected from oil wells producing from the Aux Vases or Cypress Formations in the Illinois Basin. Forty core samples of the reservoir rocks were also collected from the two formations. Analyses of the samples indicated that the total dissolved solids content (TDS) of the waters ranged from 43,300 to 151,400 mg/L, far exceeding the 35,400 mg/mL of TDS found in typical seawater. Cl-Br relations suggested that high salinities in the Aux Vases and Cypress formation waters resulted from the evaporation of original seawater and subsequent mixing of the evaporated seawater with concentrated halite solutions. Mixing with the halite solutions increased Na and Cl concentrations and diluted the concentration of other ions in the formation waters. The elemental concentrations were influenced further by diagenetic reactions with silicate and carbonate minerals. Diagenetic signatures revealed by fluid chemistry and rock mineralogy delineated the water-rock interactions that took place in the Aux Vases and Cypress sandstones. Dissolution of K-feldspar released K into the solution, leading to the formation of authigenic illite and mixed-layered illite/smectite. Some Mg was removed from the solution by the formation of authigenic chlorite and dolomite. Dolomitization, calcite recrystallization, and contribution from clay minerals raised Sr levels significantly in the formation waters. The trend of increasing TDS of the saline formation waters with depth can be explained with density stratification. But, it is difficult to explain the combination of the increasing TDS and increasing Ca/Na ratio with depth without invoking the controversial 'ion filtration' mechanism.

  15. Geothermal resources: Frio Formation, Middle Texas Gulf Coast. Geological circular 75-8

    Energy Technology Data Exchange (ETDEWEB)

    Bebout, D.G.; Agagu, O.K.; Dorfman, M.H.

    1975-01-01

    Regional sand distribution of the Frio Formation is determined; depositional environments are identified; and the geopressured zone and its relationship to sand/shale distribution, growth faults, and fluid temperatures in the Middle Texas Gulf Coast are delineated. (MHR)

  16. Mechanical and hydrological characterization of the near-field surrounding excavations in a geologic salt formation

    Energy Technology Data Exchange (ETDEWEB)

    Howard, Clifford L. [Sandia National Laboratories, Albuquerque, NM (United States)

    2014-09-01

    The technical basis for salt disposal of nuclear waste resides in salt’s favorable physical, mechanical and hydrological characteristics. Undisturbed salt formations are impermeable. Upon mining, the salt formation experiences damage in the near-field rock proximal to the mined opening and salt permeability increases dramatically. The volume of rock that has been altered by such damage is called the disturbed rock zone (DRZ).

  17. Geological Sequestration of CO2 by Hydrous Carbonate Formation with Reclaimed Slag

    Energy Technology Data Exchange (ETDEWEB)

    Von L. Richards; Kent Peaslee; Jeffrey Smith

    2008-02-06

    The concept of this project is to develop a process that improves the kinetics of the hydrous carbonate formation reaction enabling steelmakers to directly remove CO2 from their furnace exhaust gas. It is proposed to bring the furnace exhaust stream containing CO2 in contact with reclaimed steelmaking slag in a reactor that has an environment near the unit activity of water resulting in the production of carbonates. The CO2 emissions from the plant would be reduced by the amount sequestered in the formation of carbonates. The main raw materials for the process are furnace exhaust gases and specially prepared slag.

  18. Inventory of Shale Formations in the US, Including Geologic, Hydrological, and Mechanical Characteristics

    Energy Technology Data Exchange (ETDEWEB)

    Dobson, Patrick; Houseworth, James

    2013-11-22

    The objective of this report is to build upon previous compilations of shale formations within many of the major sedimentary basins in the US by developing GIS data delineating isopach and structural depth maps for many of these units. These data are being incorporated into the LANL digital GIS database being developed for determining host rock distribution and depth/thickness parameters consistent with repository design. Methods were developed to assess hydrological and geomechanical properties and conditions for shale formations based on sonic velocity measurements.

  19. Evaluation of the geological relationships to gas hydrate formation and stability

    Energy Technology Data Exchange (ETDEWEB)

    Krason, J.; Finley, P.

    1988-01-01

    The summaries of regional basin analyses document that potentially economic accumulations of gas hydrates can be formed in both active and passive margin settings. The principal requirement for gas hydrate formation in either setting is abundant methane. Passive margin sediments with high sedimentation rates and sufficient sedimentary organic carbon can generate large quantities of biogenic methane for hydrate formation. Similarly, active margin locations near a terrigenous sediment source can also have high methane generation potential due to rapid burial of adequate amounts of sedimentary organic matter. Many active margins with evidence of gas hydrate presence correspond to areas subject to upwelling. Upwelling currents can enhance methane generation by increasing primary productivity and thus sedimentary organic carbon. Structural deformation of the marginal sediments at both active and passive sites can enhance gas hydrate formation by providing pathways for migration of both biogenic and thermogenic gas to the shallow gas hydrate stability zone. Additionally, conventional hydrocarbon traps may initially concentrate sufficient amounts of hydrocarbons for subsequent gas hydrate formation.

  20. Phase-field modeling of microstructural pattern formation in alloys and geological veins

    OpenAIRE

    Ankit, Kumar

    2016-01-01

    With the advent of high performance computing, the application areas of the phase-field method, traditionally used to numerically model the phase transformation in metals and alloys, have now spanned into geoscience. A systematic investigation of the two distinct scientific problems in consideration suggest a strong influence of interfacial energy on the natural and induced pattern formation in diffusion-controlled regime.

  1. Phase 1 user instruction manual. A geological formation - drill string dynamic interaction finite element program (GEODYN)

    Energy Technology Data Exchange (ETDEWEB)

    Tinianow, M.A.; Rotelli, R.L. Jr.; Baird, J.A.

    1984-06-01

    User instructions for the GEODYN Interactive Finite Element Computer Program are presented. The program is capable of performing the analysis of the three-dimensional transient dynamic response of a Polycrystalline Diamond Compact Bit - Bit Sub arising from the intermittent contact of the bit with the downhole rock formations. The program accommodates non-linear, time dependent, loading and boundary conditions.

  2. Geology and hydrocarbon potential of Dawson Bay Formation carbonate unit (Middle Devonian), Williston basin, North Dakota

    Energy Technology Data Exchange (ETDEWEB)

    Pound, W.

    1988-07-01

    The Middle Devonian Dawson Bay Formation carbonate unit is present in the subsurface of North Dakota except where truncated by postdepositional erosion. The carbonate unit thickens from the erosional limit to a maximum thickness of 47.5 m (156 ft) in Renville County and reaches a maximum depth of 3798 m (12,460 ft) below the surface in McKenzie County. In North Dakota, a submarine hardground separates the carbonate unit from the underlying second red bed member of the Dawson Bay Formation. The upper contact with the Souris River Formation is conformable except in those areas where the Dawson Bay Formation was exposed to subaerial erosion prior to deposition of the Souris River sediments. The Dawson Bay carbonate unit is predominantly dolomitic and fossiliferous limestone or fossiliferous dolostone. The carbonate unit can be subdivided into five lithofacies on the basis of characteristic fossil fauna, flora, and other lithologic features. Lithofacies analysis of the Dawson Bay carbonates suggests a shallowing-upward succession of depositional environments and associated energy zones as follows: shallow epeiric sea (very low energy), stromatoporoid biostrome/bioherm (low energy), very shallow epeiric sea (very low energy), restricted shallow epeiric sea (extremely low energy), and shallow epeiric sea shoreline (variable energy). Eogenetic diagenesis includes color-mottling, dolomitization of micrite to microcrystalline dolomite with penecontemporaneous anhydrite replacement of cryptalgal mudstones and boundstones, cementation by sparry calcite, and vuggy porosity development. Mesogenetic diagenesis includes formation of mosaic dolomites, cementation by blocky equant calcite, neomorphism, pressure-solution, fracturing, halite cementation, and hydrocarbon emplacement.

  3. Geological Features of Iron Formations and Associate Rock in Bulunkuole Group, West Kunlun, Xinjiang, China

    Science.gov (United States)

    Huang, Chaoyang; Wang, He; Ren, Guangli; Wu, Wenying

    2017-05-01

    West Kunlun is located at northwest part of the Tibetan plateau, and it’s divided into North Kunlun terrane, South Kunlun terrane and Tianshuihai terrane. Bulunkuole Group is located in Tianshuihai terrane, and Taaxi, Yelike, Laobing, Zankan, Mokaer and Jiertiekegou iron deposit was found in this terrane. Those iron deposits are set to the important iron ore mineralization belt of Xinjiang and even China. By investigation the geological features, ore distributions, and mineralization characters; and analyze the electron microprobe of magnetite and pyrite, stable isotope of pyrite, magnetite and anhydrite to discussion the tectonic setting and its genesis analysis iron ore deposit in Blunkuole Group, and establish the metallogenic model in this area. By contrastive analyzing of Taaxi, Yelike Zankan-Mokar iron ore deposits in Bulunkuole Group, it was found that all the iron ore deposit share the similar sedimentary environment. Those deposits have 3 ∼ 4 ore bodies, each get a meter to dozens of meters in width, extend to thousands of meters. The wall rocks are biotite quartz schist and plagioclase amphibole schist, and the two rocks interbed usually. It should be distinguish in the stratigraphic correlation of Bulunkuole Group for the influenced by the magma intrusion, such as granite and felsite porphyry.

  4. HARMONIZATION OF CROATIAN LEGAL REGULATIONS WITH EU DIRECTIVES CONCERNING PETROLEUM INDUSTRY WASTE DISPOSAL INTO SUITABLE GEOLOGICAL FORMATIONS

    Directory of Open Access Journals (Sweden)

    Vladislav Brkić

    2010-12-01

    Full Text Available Exploration and production of mineral resources, especially hydrocarbons, are from ecological point of view, one of the most sensitive activities. Concerning global ecological standards, which have also been enforced into petroleum industry, exploration and production of mineral energy sources have to be based on compliance with introduced environmental and human health protection requirements. Since it is expected that Croatia will join European Union in the near future, it is necessary to develop institutional and legislative frameworks for enabling and regulating the harmonization of mineral resources exploration and production waste disposal with European Union directives and regulations. Petroleum industry waste disposal by injection into suitable geological formations is one of environmentally acceptable methods for petroleum industry waste management (the paper is published in Croatian.

  5. Leveraging Regional Exploration to Develop Geologic Framework for CO2 Storage in Deep Formations in Midwestern United States

    Energy Technology Data Exchange (ETDEWEB)

    Neeraj Gupta

    2009-09-30

    the Ohio River Valley corridor in the Appalachian Basin, which underlies large concentrations of CO{sub 2} emission sources. In addition, some wells in the Michigan basin are included. Assessment of the geologic and petrophysical properties of zones of interest has been conducted. Although a large number of formations have been evaluated across the geologic column, the primary focus has been on evaluating the Cambrian sandstones (Mt. Simon, Rose Run, Kerbel) and carbonates layers (Knox Dolomite) as well as on the Silurian-Devonian carbonates (Bass Island, Salina) and sandstones (Clinton, Oriskany, Berea). Factors controlling the development of porosity and permeability, such as the depositional setting have been explored. In northern Michigan the Bass Islands Dolomite appears to have favorable reservoir development. In west central Michigan the St. Peter sandstone exhibits excellent porosity in the Hart and Feuring well and looks promising. In Southeastern Kentucky in the Appalachian Basin, the Batten and Baird well provided valuable data on sequestration potential in organic shales through adsorption. In central and eastern Ohio and western West Virginia, the majority of the wells provided an insight to the complex geologic framework of the relatively little known Precambrian through Silurian potential injection targets. Although valuable data was acquired and a number of critical data gaps were filled through this effort, there are still many challenges ahead and questions that need answered. The lateral extent to which favorable potential injection conditions exist in most reservoirs is still generally uncertain. The prolongation of the characterization of regional geologic framework through partnership would continue to build confidence and greatly benefit the overall CO{sub 2} sequestration effort.

  6. Composition and formation of Palaeozoic Erlangping ophiolitic slab, North Qinling: Evidence from geology and geochemistry

    Institute of Scientific and Technical Information of China (English)

    孙勇; 卢欣祥; 韩松; 张国伟

    1996-01-01

    The analyses based on the protolith formation, metamorphic and deformation reveal that the Erlangping Group is composed of different lithological slices, without any significance in stratigraphy. It is therefore to discard the Erlangping Group into the Damiao slab, the Erlangping ophiolitic slab and the Xiaozhai slab. The Erlangping ophiolitic slab only includes the former Huoshenmiao Formation and it is mainly composed of massive basalts, pillow basalts, sheet dikes, gabbro and a few of ultramafic intrusions with patches of plagiogranite, overlain by radiolarian silicolites. A lot of microfossils were discovered in the silicolites that mark the Erlangping ophiolitic slab mainly formed in the Early to Middle Ordovician. In geochemistry, most of the basalts and diabase dikes are consistent with N-MORB except a few of samples effected by alteration. The Erlangping ophiolitic slab represents a remnant piece of ancient ocean crust which is most suitable to a back-arc basin setting. A mean 207Pb/206Pb age of

  7. Evaluation of Injection Efficiency of Carbon Dioxide Using an Integrated Injection Well and Geologic Formation Numerical Simulation Scheme

    Science.gov (United States)

    Kihm, J.; Park, S.; Kim, J.; SNU CO2 GEO-SEQ TEAM

    2011-12-01

    A series of integrated injection well and geologic formation numerical simulations was performed to evaluate the injection efficiency of carbon dioxide using a multiphase thermo-hydrological numerical model. The numerical simulation results show that groundwater flow, carbon dioxide flow, and heat transport in both injection well and sandstone formation can be simultaneously analyzed, and thus the injection efficiency (i.e., injection rate and injectivity) of carbon dioxide can be quantitatively evaluated using the integrated injection well and geologic formation numerical simulation scheme. The injection rate and injectivity of carbon dioxide increase rapidly during the early period of time (about 10 days) and then increase slightly up to about 2.07 kg/s (equivalent to 0.065 Mton/year) and about 2.84 × 10-7 kg/s/Pa, respectively, until 10 years for the base case. The sensitivity test results show that the injection pressure and temperature of carbon dioxide at the wellhead have significant impacts on its injection rate and injectivity. The vertical profile of the fluid pressure in the injection well becomes almost a hydrostatical equilibrium state within 1 month for all the cases. The vertical profile of the fluid temperature in the injection well becomes a monotonously increasing profile with the depth due to isenthalpic or adiabatic compression within 6 months for all the cases. The injection rate of carbon dioxide increases linearly with the fluid pressure difference between the well bottom and the sandstone formation far from the injection well. In contrast, the injectivity of carbon dioxide varies unsystematically with the fluid pressure difference. On the other hand, the reciprocal of the kinematic viscosity of carbon dioxide at the well bottom has an excellent linear relationship with the injectivity of carbon dioxide. It indicates that the above-mentioned variation of the injectivity of carbon dioxide can be corrected using this linear relationship. The

  8. Geologic map of the Peach Orchard Flat quadrangle, Carbon County, Wyoming, and descriptions of new stratigraphic units in the Upper Cretaceous Lance Formation and Paleocene Fort Union Formation, eastern Greater Green River Basin, Wyoming-Colorado

    Science.gov (United States)

    Honey, J.D.; Hettinger, R.D.

    2004-01-01

    This report provides a geologic map of the Peach Orchard Flat 7.5-minute quadrangle, located along the eastern flank of the Washakie Basin, Wyo. Geologic formations and individual coal beds were mapped at a scale of 1:24,000; surface stratigraphic sections were measured and described; and well logs were examined to determine coal correlations and thicknesses in the subsurface. In addition, four lithostratigraphic units were named: the Red Rim Member of the Upper Cretaceous Lance Formation, and the China Butte, Blue Gap, and Overland Members of the Paleocene Fort Union Formation.

  9. Geology of the Sabie River Basalt Formation in the Southern Kruger National Park

    Directory of Open Access Journals (Sweden)

    R.J. Sweeney

    1986-12-01

    Full Text Available The Sabie River Basalt Formation (SRBF in the central Lebombo is a virtually continuous sequence of basaltic lavas some 2 500 m thick that was erupted 200 - 179 Ma ago. Flows are dominantly pahoehoe in character and vary from 2 m to 20 m in thickness. Dolerite dykes cross-cutting the basalt sequence probably represent feeders to this considerable volcanic event. Volcanological features observed within the SRBF are described. Two chemically distinct basaltic magma types are recognised, the simultaneous eruption of which presents an intriguing geochemical problem as to their origins.

  10. GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS AND RELATED MINERALIZATION OF CHERT FORMATIONS IN SOUTH TIBET

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    There occur abundant cherts in the Mesozoic and Cenozoic strata in southern Tibet. Some of them possess characteristic hydrothermal structures such as layered, laminated, massive and breccia structures.Ratios of Al/(Al+Fe+Mn), Co/Ni, Fe/Ti and TiO2-Al2O3 demonstrate that their origin is related to hydrothermal sedimentation. The chert formations have close relationship with Sb, Au and poly-metallic mineralization, and the ore-forming fluid show strong correlation with fossil hydrothermal water.

  11. H12012_PHOTOGRAPHS: SEABOSS Images from U.S. Geological Survey (USGS) Cruise 2010-015-FA in JPEG Format

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Energy and...

  12. Geology of the Hanna Formation, Hanna Underground Coal Gasification Site, Hanna, Wyoming

    Energy Technology Data Exchange (ETDEWEB)

    Oliver, R.L.; Youngberg, A.D.

    1984-01-01

    The Hanna Underground Coal Gasification (UCG) study area consists of the SW1/4 of Section 29 and the E1/2SE1/4 of Section 30 in Township 22 North, Range 81 West, Wyoming. Regionally, this is located in the coal-bearing Hanna Syncline of the Hanna Basin in southeast Wyoming. The structure of the site is characterized by beds dipping gently to the northeast. An east-west fault graben complex interrupts this basic trend in the center of the area. The target coal bed of the UCG experiments was the Hanna No. 1 coal in the Hanna Formation. Sedimentary rocks comprising the Hanna Formation consist of a sequence of nonmarine shales, sandstones, coals and conglomerates. The overburden of the Hanna No. 1 coal bed at the Hanna UCG site was divided into four broad local stratigraphic units. Analytical studies were made on overburden and coal samples taken from cores to determine their mineralogical composition. Textural and mineralogical characteristics of sandstones from local stratigraphic units A, B, and C were analyzed and compared. Petrographic analyses were done on the coal including oxides, forms of sulfur, pyrite types, maceral composition, and coal rank. Semi-quantitative spectrographic and analytic geochemical analyses were done on the overburden and coal and relative element concentrations were compared. Trends within each stratigraphic unit were also presented and related to depositional environments. The spectrographic analysis was also done by lithotype. 34 references, 60 figures, 18 tables.

  13. Lead isotope evidence for recent uranium mobility in geological formations of Brazil: implications for radioactive waste disposal

    Energy Technology Data Exchange (ETDEWEB)

    Iyer, S.S. [Department of Physics and Astronomy, University of Calgary, Calgary (Canada); Babinski, M. [Instituto de Geociencias, Universidade de Sao Paulo, Sao Paulo (Brazil); Marinho, M.M. [Companhia Baiana de Pesquisa Mineral (CBPM), Salvador (Brazil); Barbosa, J.S.F. [Instituto de Geociencias, Universidade Federal da Bahia, Salvador (Brazil); Sato, I.M.; Salvador, V.L. [Instituto de Pesquisas Energeticas e Nucleares (CNEN/SP), Sao Paulo (Brazil)

    1999-03-01

    Lead-lead isotope data from whole rock samples are used to investigate the recent (last few million years) mobility of U and Th. The method is based on the comparison of the calculated present day U and Th concentrations required to yield the Pb isotope composition in the samples with the actual present day concentrations of U and Th obtained by direct measurement. The geological formations studied include the Neoproterozoic carbonate sediments of the Bambui Group, Archean/Paleoproterozoic granite-greenstone terrain of the Contendas-Mirante Complex and a Proterozoic ortho-gneisses hosting U deposit in Lagoa Real. All these formations are in the Sao Francisco Craton, Brazil. The data show high U mobility in the carbonate sediments and in the deformed ortho-gneisses set in a ductile shear zone. Infiltration of groundwater through fault zones seems to have facilitated the U mobility. The Pb isotope approach is a useful technique complementing U-series disequilibrium studies and may be included for site characterization studies for radioactive waste disposal. (Copyright (c) 1999 Elsevier Science B.V., Amsterdam. All rights reserved.)

  14. Sound velocity profiles (SVPs) in CSV format and PNG image format collected by the U.S. Geological Survey in the nearshore surrounding the Elizabeth Islands, MA

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  15. Sound velocity profiles (SVPs) in CSV format and PNG image format collected by the U.S. Geological Survey in the nearshore surrounding the Elizabeth Islands, MA

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  16. The protoliths to the sillimanite gneisses from the Larsemann Hills and geological implication in their formation

    Institute of Scientific and Technical Information of China (English)

    Ren Liudong; Yang Chonghui; Wang Yanbin; Liu Ping; Zhao Yue

    2009-01-01

    The source rock from which the sillimanite gneisses derive mainly was the biotite plagioclase gneiss in the Larsemann Hills. It is the deformation-metamorphism process under special pressure and temperature condition, not the original rock compositions, that controls the presence of sillimanite. To a great degree, the sillimanite gneiss was the mixture of the detaining materials of the migrating felsic melt from the bt-plagioclase gneiss that underwent partial melting and the relics when the melt was removed. In sillimanitization the original rock had been changed substantially in chemical composition. The related metamorphism process severely deviated from the isochemical series, the process was of, therefore, an open system. In addition, the Al2O3 contents of the original rock was an important, but not critical factor for the formation of sillimanite, i.e., the sillimanite-bearing rock need not be of aluminum rich in composition, and vise contrarily, the aluminum rock may not produce sillimanite. The authors of the present paper postulate that the source rock from which the aluminum rich rock derives need not be of aluminum rich, but sillimanitization is generally the Al2O3 increasing process. The aluminum rich sediments such as clay or shale need not correspond directly to sillimanite-rich gneisses. No argillaceous rock present equals to sillimanite-rich gneiss in chemical composition. The protoliths to the sillimanite gneisses from the Larsemann Hills, east Antarctica, and their adjacent area may be pelite, shale greywacke, sub-greywacke, quartz sandstone and quartz-tourmalinite. If correct, the conclusion will be of significant implication for the determination of the sillimanite gneiss formation process and the reconstruction of the protolith setting.

  17. Characterization of shale gas enrichment in the Wufeng Formation–Longmaxi Formation in the Sichuan Basin of China and evaluation of its geological construction–transformation evolution sequence

    Directory of Open Access Journals (Sweden)

    Zhiliang He

    2017-02-01

    Full Text Available Shale gas in Upper Ordovician Wufeng Formation–Lower Silurian Longmaxi Formation in the Sichuan Basin is one of the key strata being explored and developed in China, where shale gas reservoirs have been found in Fuling, Weiyuan, Changning and Zhaotong. Characteristics of shale gas enrichment in the formation shown by detailed profiling and analysis are summarized as “high, handsome and rich”. “High” mainly refers to the high quality of original materials for the formation of shale with excellent key parameters, including the good type and high abundance of organic matters, high content of brittle minerals and moderate thermal evolution. “Handsome” means late and weak deformation, favorable deformation mode and structure, and appropriate uplift and current burial depth. “Rich” includes high gas content, high formation pressure coefficient, good reservoir property, favorable reservoir scale transformation and high initial and final output, with relative ease of development and obvious economic benefit. For shale gas enrichment and high yield, it is important that the combination of shale was deposited and formed in excellent conditions (geological construction, and then underwent appropriate tectonic deformation, uplift, and erosion (geological transformation. Evaluation based on geological construction (evolution sequence from formation to the reservoir includes sequence stratigraphy and sediment, hydrocarbon generation and formation of reservoir pores. Based on geological transformation (evolution sequence from the reservoir to preservation, the strata should be evaluated for structural deformation, the formation of reservoir fracture and preservation of shale gas. The evaluation of the “construction - transformation” sequence is to cover the whole process of shale gas formation and preservation. This way, both positive and negative effects of the formation-transformation sequence on shale gas are assessed. The evaluation

  18. Geology and formation of titaniferous placer deposits in Upper Jogaz Valley area, Fanuj, Sistan and Baluchestan province, Iran

    Directory of Open Access Journals (Sweden)

    Seyed Javad Moghaddasi

    2015-10-01

    Full Text Available Introduction The Fanuj titaniferous placer deposits are located 35 km northwest of the Fanuj, Sistan and Baluchestan province (1 . The studied area comprises a (2 small part of the late Cretaceous Fanuj-Maskutan (Rameshk ophiolite complex (Arshadi and Mahdavi, 1987. Reconnaissance and comprehensive exploration programs in the Fanuj district (East of the 1:100000 Fanuj quadrangle map,Yazdi, 2010 revealed that the Upper Jogaz Valley area has the highest concentration of titaniferous placer deposits. In this study, geology and formation of the titaniferous placer deposits in Upper Jogaz Valley area are discussed. Materials and Methods (3 Forty samples were collected from surface and drainage sediments to evaluate the potential for titaniferous placers. Mineralogical studies indicated the high Ti (ilmenite bearing areas, which led to detailed exploration by 29 shallow drill holes and 9 trenches. A total of 61 sub-surface samples were collected for heavy mineral studies and ore grade determination. The exploration studies suggest that the the Upper Jogaz Valley area in the Fanuj district has a high potential for titaniferous placer deposits. Extensive exposures of black sands in the sreambeds of this area suggested detailed sampling, so that 12 holes were drilled (2-3 m depthfrom which 26 samples were collected, and five trenches were excavated to 2-4 m depth (4. The distribution of drill holes and trenches were plotted with “Logplot” software for further interpretation. Twenty-two samples from these drill holes were analyzed for TiO2. Results The reconnaissance and comprehensive exploration in Fanuj district shows that the Upper Jogaz Valley area has the highest concentration of titaniferous placer deposits. The general geology of the region and petrology and mineralogy of collected samples suggest that the source rock of the Upper Jogaz Valley titaniferous placers is the hornblende- and olivine-gabbro unit of the Fanuj-Ramesh ophiolites. The Ti

  19. Geological and geochemical characterization of the Lower Cretaceous Pearsall Formation, Maverick Basin, south Texas: A future shale gas resource?

    Science.gov (United States)

    Hackley, Paul C.

    2012-01-01

    As part of an assessment of undiscovered hydrocarbon resources in the northern Gulf of Mexico onshore Mesozoic section, the U.S. Geological Survey (USGS) evaluated the Lower Cretaceous Pearsall Formation of the Maverick Basin, south Texas, as a potential shale gas resource. Wireline logs were used to determine the stratigraphic distribution of the Pearsall Formation and to select available core and cuttings samples for analytical investigation. Samples used for this study spanned updip to downdip environments in the Maverick Basin, including several from the current shale gas-producing area of the Pearsall Formation.The term shale does not adequately describe any of the Pearsall samples evaluated for this study, which included argillaceous lime wackestones from more proximal marine depositional environments in Maverick County and argillaceous lime mudstones from the distal Lower Cretaceous shelf edge in western Bee County. Most facies in the Pearsall Formation were deposited in oxygenated environments as evidenced by the presence of biota preserved as shell fragments and the near absence of sediment laminae, which is probably caused by bioturbation. Organic material is poorly preserved and primarily consists of type III kerogen (terrestrial) and type IV kerogen (inert solid bitumen), with a minor contribution from type II kerogen (marine) based on petrographic analysis and pyrolysis. Carbonate dominates the mineralogy followed by clays and quartz. The low abundance and broad size distribution of pyrite are consistent with the presence of oxic conditions during sediment deposition. The Pearsall Formation is in the dry gas window of hydrocarbon generation (mean random vitrinite reflectance values, Ro = 1.2–2.2%) and contains moderate levels of total organic carbon (average 0.86 wt. %), which primarily resides in the inert solid bitumen. Solid bitumen is interpreted to result from in-situ thermal cracking of liquid hydrocarbon generated from original type II kerogen

  20. Timing of chaotic terrain formation in Argadnel Regio, Europa, and implications for geological history

    Science.gov (United States)

    Parro, Laura M.; Ruiz, Javier; Pappalardo, Robert T.

    2016-10-01

    Chaos terrains are among the most prominent landforms of Europa, and are generally among the youngest features recorded on the surface. Chaos units were formed by to endogenic activity, maybe related to solid-state convection and thermal diapirism in the ice shell, perhaps aided by melting of salt-rich ice bodies below the surface. In this work, we analyze the different units of chaotic terrain in a portion of Argadnel Regio, a region located on the anti-Jovian hemisphere of Europa, and their possible timing in the general stratigraphic framework of this satellite. Two different chaos units can be differentiated, based on surface texture, morphology, and cross-cutting relationships with other units, and from interpretations based on pre-existing surface restoration through elimination of a low albedo band. The existence of two stratigraphically different chaos units implies that conditions for chaos formation occurred during more than a single discreet time on Europa, at least in Argadnel Regio, and perhaps in other places. The existence of older chaos units on Europa might be related to convective episodes possibly favored by local conditions in the icy shell, such as variations in grain size, abundance of non-water ice-components, or regional thickness of the brittle lithosphere or the entire ice shell.

  1. Probabilistic modeling and global sensitivity analysis for CO 2 storage in geological formations: a spectral approach

    KAUST Repository

    Saad, Bilal M.

    2017-09-18

    This work focuses on the simulation of CO2 storage in deep underground formations under uncertainty and seeks to understand the impact of uncertainties in reservoir properties on CO2 leakage. To simulate the process, a non-isothermal two-phase two-component flow system with equilibrium phase exchange is used. Since model evaluations are computationally intensive, instead of traditional Monte Carlo methods, we rely on polynomial chaos (PC) expansions for representation of the stochastic model response. A non-intrusive approach is used to determine the PC coefficients. We establish the accuracy of the PC representations within a reasonable error threshold through systematic convergence studies. In addition to characterizing the distributions of model observables, we compute probabilities of excess CO2 leakage. Moreover, we consider the injection rate as a design parameter and compute an optimum injection rate that ensures that the risk of excess pressure buildup at the leaky well remains below acceptable levels. We also provide a comprehensive analysis of sensitivities of CO2 leakage, where we compute the contributions of the random parameters, and their interactions, to the variance by computing first, second, and total order Sobol’ indices.

  2. Geochemical Characteristics and its Geological Significance of Oil Shale from the Youganwo Formation, Maoming Basin, China

    Science.gov (United States)

    Zhou, Yuanyuan; Qiu, Nansheng

    2016-04-01

    Geochemical elements of oil shale in the Maoming Basin were analyzed to discuss provenance attribute and depositional environment of the Youganwo formation. Experimental date of the major elements, trace elements and rare earth elements of 24 samples from the Maoye 1 well were examined.The analyzed oil shale samples were characterized by enrichment of Th, U, Pb and LREE, depleted of Zr, Cr and Hf,negative Eu and Ce anomalies, indicating that these samples were originated from continental crust. The chemical index of alteration (CIA) values and the Zr/Sc-Th/Sc diagrams indicate that source rocks had undergone intense chemical weathering and deposition recirculation. Based on the La/Th-Hf and La/Yb-∑REE diagrams and the negative anomaly of Eu element, the oil shale in the Maoming Basin has diverse sources, which mainly came from felsic source region of the upper crust or the mixture of felsic volcanic rocks, granite and sedimentary rocks. Ratios of the Sr/Cu, MgO/CaO suggest that oil shale was formed in fresh water under warm and humid climate, shallow water column became deeper during the middle and late sedimentary period. The depositional environment is interpreted to be limnetic with weak reduction at the early stage and gradually turned into semi-deep to deep lacustrine.

  3. Continental crust formation: Numerical modelling of chemical evolution and geological implications

    Science.gov (United States)

    Walzer, U.; Hendel, R.

    2017-05-01

    Oceanic plateaus develop by decompression melting of mantle plumes and have contributed to the growth of the continental crust throughout Earth's evolution. Occasional large-scale partial melting events of parts of the asthenosphere during the Archean produced large domains of precursor crustal material. The fractionation of arc-related crust during the Proterozoic and Phanerozoic contributed to the growth of continental crust. However, it remains unclear whether the continents or their precursors formed during episodic events or whether the gaps in zircon age records are a function of varying preservation potential. This study demonstrates that the formation of the continental crust was intrinsically tied to the thermoconvective evolution of the Earth's mantle. Our numerical solutions for the full set of physical balance equations of convection in a spherical shell mantle, combined with simplified equations of chemical continent-mantle differentiation, demonstrate that the actual rate of continental growth is not uniform through time. The kinetic energy of solid-state mantle creep (Ekin) slowly decreases with superposed episodic but not periodic maxima. In addition, laterally averaged surface heat flow (qob) behaves similarly but shows peaks that lag by 15-30 Ma compared with the Ekin peaks. Peak values of continental growth are delayed by 75-100 Ma relative to the qob maxima. The calculated present-day qob and total continental mass values agree well with observed values. Each episode of continental growth is separated from the next by an interval of quiescence that is not the result of variations in mantle creep velocity but instead reflects the fact that the peridotite solidus is not only a function of pressure but also of local water abundance. A period of differentiation results in a reduction in regional water concentrations, thereby increasing the temperature of the peridotite solidus and the regional viscosity of the mantle. By plausibly varying the

  4. COAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091749 Cai Hou’an(College of Energy Geology,China University of Geosciences,Beijing 100083,China);Xu Debin SHRIMP U-Pb Isotope Age of Volcanic Rocks Distributed in the Badaohao Area,Liaoning Province and Its Significance(Coal Geology & Exploration,ISSN1001-1986,CN61-1155/P,36(4),2008,p.17-20,2 illus.,1 table,16 refs.)Key words:coal measures,volcanic rocks,U-Pb dating,LiaoningA set of andesite volcanic rocks distributes in the Badaohao area in Heishan County,Liaoning Province.It’s geological age and stratigraphy sequence relationship between the Lower Cretaceous Badaohao Formation and the volcanic rocks can not make sure till now and is influencing the further prospect for coals.Zircon

  5. Effect of modeling factors on the dissolution-diffusion-convection process during CO2 geological storage in deep saline formations

    Institute of Scientific and Technical Information of China (English)

    Wei ZHANG

    2013-01-01

    It is well known that during CO2 geological storage,density-driven convective activity can significantly accelerate the dissolution of injected CO2 into water.This action could limit the escape of supercritical CO2 from the storage formation through vertical pathways such as fractures,faults and abandoned wells,consequently increasing permanence and security of storage.First,we investigated the effect of numerical perturbation caused by time and grid resolution and the convergence criteria on the dissolution-diffusion-convection (DDC) process.Then,using the model with appropriate spatial and temporal resolution,some uncertainty parameters investigated in our previous paper such as initial gas saturation and model boundaries,and other factors such as relative liquid permeability and porosity modification were used to examine their effects on the DDC process.Finally,we compared the effect of 2D and 3D models on the simulation of the DDC process.The above modeling results should contribute to clear understanding and accurate simulation of the DDC process,especially the onset of convective activity,and the CO2 dissolution rate during the convection-dominated stage.

  6. Site characterization of the highest-priority geologic formations for CO2 storage in Wyoming

    Energy Technology Data Exchange (ETDEWEB)

    Surdam, Ronald C. [Univ. of Wyoming, Laramie, WY (United States); Bentley, Ramsey [Univ. of Wyoming, Laramie, WY (United States); Campbell-Stone, Erin [Univ. of Wyoming, Laramie, WY (United States); Dahl, Shanna [Univ. of Wyoming, Laramie, WY (United States); Deiss, Allory [Univ. of Wyoming, Laramie, WY (United States); Ganshin, Yuri [Univ. of Wyoming, Laramie, WY (United States); Jiao, Zunsheng [Univ. of Wyoming, Laramie, WY (United States); Kaszuba, John [Univ. of Wyoming, Laramie, WY (United States); Mallick, Subhashis [Univ. of Wyoming, Laramie, WY (United States); McLaughlin, Fred [Univ. of Wyoming, Laramie, WY (United States); Myers, James [Univ. of Wyoming, Laramie, WY (United States); Quillinan, Scott [Univ. of Wyoming, Laramie, WY (United States)

    2013-12-07

    This study, funded by U.S. Department of Energy National Energy Technology Laboratory award DE-FE0002142 along with the state of Wyoming, uses outcrop and core observations, a diverse electric log suite, a VSP survey, in-bore testing (DST, injection tests, and fluid sampling), a variety of rock/fluid analyses, and a wide range of seismic attributes derived from a 3-D seismic survey to thoroughly characterize the highest-potential storage reservoirs and confining layers at the premier CO2 geological storage site in Wyoming. An accurate site characterization was essential to assessing the following critical aspects of the storage site: (1) more accurately estimate the CO2 reservoir storage capacity (Madison Limestone and Weber Sandstone at the Rock Springs Uplift (RSU)), (2) evaluate the distribution, long-term integrity, and permanence of the confining layers, (3) manage CO2 injection pressures by removing formation fluids (brine production/treatment), and (4) evaluate potential utilization of the stored CO2

  7. A data driven model for the impact of IFT and density variations on CO2 storage capacity in geologic formations

    Science.gov (United States)

    Nomeli, Mohammad A.; Riaz, Amir

    2017-09-01

    Carbon dioxide (CO2) storage in depleted hydrocarbon reservoirs and deep saline aquifers is one of the most promising solutions for decreasing CO2 concentration in the atmosphere. One of the important issues for CO2 storage in subsurface environments is the sealing efficiency of low-permeable cap-rocks overlying potential CO2 storage reservoirs. Though we focus on the effect of IFT in this study as a factor influencing sealing efficiency or storage capacity, other factors such as interfacial interactions, wettability, pore radius and interfacial mass transfer also affect the mobility and storage capacity of CO2 phase in the pore space. The study of the variation of IFT is however important because the pressure needed to penetrate a pore depends on both the pore size and the interfacial tension. Hence small variations in IFT can affect flow across a large population of pores. A novel model is proposed to find the IFT of the ternary systems (CO2/brine-salt) in a range of temperatures (300-373 K), pressures (50-250 bar), and up to 6 molal salinity applicable to CO2 storage in geological formations through a multi-variant non-linear regression of experimental data. The method uses a general empirical model for the quaternary system CO2/brine-salts that can be made to coincide with experimental data for a variety of solutions. We introduce correction parameters into the model, which compensates for uncertainties, and enforce agreement with experimental data. The results for IFT show a strong dependence on temperature, pressure, and salinity. The model has been found to describe the experimental data in the appropriate parameter space with reasonable precision. Finally, we use the new model to evaluate the effects of formation depth on the actual efficiency of CO2 storage. The results indicate that, in the case of CO2 storage in deep subsurface environments as a global-warming mitigation strategy, CO2 storage capacity increases with reservoir depth.

  8. Safety guidebook relative to the disposal of radioactive wastes in deep geologic formation; Guide de surete relatif au stockage definitif des dechets radioactifs en formation geologique profonde

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    The French nuclear safety authority (ASN) initiated in 2003 a revision process of the objectives to be considered during the research and work steps of the implementation of a radioactive waste storage facility in deep geologic formations. The purpose of this document is to define the safety objectives that have to be retained at each step of this implementation, from the site characterization to the closure of the facility. This update takes into account the works carried out by the ANDRA (French national agency of radioactive wastes) in the framework of the law from December 30, 1991, and the advices of the permanent experts group about these works. It takes also into consideration the international research works in this domain and the choices defined in the program law no 2006-739 from June 28, 2006 relative to the sustainable management of radioactive materials and wastes. The main modifications concern: the notion of reversibility, the definition of the safety functions of disposal components, the safety goals and the design principles assigned to waste packages, the control of nuclear materials and the monitoring objectives of the facility. The documents treats of the following points: 1 - the objectives of public health and environment protection; 2 - the safety principles and the safety-related design bases of the facility; and 3 - the method used for demonstrating the disposal safety. (J.S.)

  9. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110727 Dai Deqiu (Institute of Geology, Hunan University of Science and Technology, Xiangtan 411201, China); Wang Daode The Evolvement Models and Progress of Research on Formation of Ca-,Al-Rich inclusions in Chondrites (Geological Review, ISSN0371-5736, CN11-1952/P, 56(3), 2010, p.374-383, 2 illus., 1 table, 72 refs.)Key words: chondrites Ca-, Al-rich inclusions (CAIs) are the earliest assemblages formed in the solar nebula. The formation models of CAIs include gas-soild condensation, crystallization from melting or partial melting and high-temperature evaporating residues. The latest study shows similar distribution patterns of the petrographic types and sizes of CAIs in various chondrites. The petrographic characters argue that CAIs in various chemical groups of chondrites formed under similar processes and conditions probably in a same region in the solar nebula.

  10. COAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141574 Chen Hao(Exploration and Development Research Institute,Daqing Oilfield Company,Daqing 163712,China)High-Resolution Sequences and Coal Accumulating Laws in Nantun Formation of Huhe Lake Sag(Petroleum Geology&Oilfield Development in Daqing,ISSN1000-3754,CN23-1286/TQ,32(4),2013,p.15-19,5 illus.,15 refs.)Key words:coal accumulation regularity,coal

  11. U.S. Department of Energy's site screening, site selection, and initial characterization for storage of CO2 in deep geological formations

    Science.gov (United States)

    Rodosta, T.D.; Litynski, J.T.; Plasynski, S.I.; Hickman, S.; Frailey, S.; Myer, L.

    2011-01-01

    The U.S. Department of Energy (DOE) is the lead Federal agency for the development and deployment of carbon sequestration technologies. As part of its mission to facilitate technology transfer and develop guidelines from lessons learned, DOE is developing a series of best practice manuals (BPMs) for carbon capture and storage (CCS). The "Site Screening, Site Selection, and Initial Characterization for Storage of CO2 in Deep Geological Formations" BPM is a compilation of best practices and includes flowchart diagrams illustrating the general decision making process for Site Screening, Site Selection, and Initial Characterization. The BPM integrates the knowledge gained from various programmatic efforts, with particular emphasis on the Characterization Phase through pilot-scale CO2 injection testing of the Validation Phase of the Regional Carbon Sequestration Partnership (RCSP) Initiative. Key geologic and surface elements that suitable candidate storage sites should possess are identified, along with example Site Screening, Site Selection, and Initial Characterization protocols for large-scale geologic storage projects located across diverse geologic and regional settings. This manual has been written as a working document, establishing a framework and methodology for proper site selection for CO2 geologic storage. This will be useful for future CO2 emitters, transporters, and storage providers. It will also be of use in informing local, regional, state, and national governmental agencies of best practices in proper sequestration site selection. Furthermore, it will educate the inquisitive general public on options and processes for geologic CO2 storage. In addition to providing best practices, the manual presents a geologic storage resource and capacity classification system. The system provides a "standard" to communicate storage and capacity estimates, uncertainty and project development risk, data guidelines and analyses for adequate site characterization, and

  12. Preliminary geologic mapping of Cretaceous and Tertiary formations in the eastern part of the Little Snake River coal field, Carbon County, Wyoming

    Science.gov (United States)

    Haacke, Jon E.; Barclay, C. S. Venable; Hettinger, Robert D.

    2016-09-30

    In the 1970s and 1980s, C.S. Venable Barclay conducted geologic mapping of areas primarily underlain by Cretaceous coals in the eastern part of the Little Snake River coal field (LSR) in Carbon County, southwest Wyoming. With some exceptions, most of the mapping data were never published. Subsequently, after his retirement from the U.S. Geological Survey (USGS), his field maps and field notebooks were archived in the USGS Field Records. Due to a pending USGS coal assessment of the Little Snake River coal field area and planned geological mapping to be conducted by the Wyoming State Geological Survey, Barclay’s mapping data needed to be published to support these efforts. Subsequently, geologic maps were scanned and georeferenced into a geographic information system, and project and field notes were scanned into Portable Document Format (PDF) files. Data for seventeen 7½-minute quadrangles are presented in this report. This publication is solely intended to compile the mapping data as it was last worked on by Barclay and provides no interpretation or modification of his work.

  13. Remote Sensing Research on the Geological Formation of Hoh Xil Basin%可可西里盆地构造信息的遥感提取

    Institute of Scientific and Technical Information of China (English)

    刘海军; 刘登忠; 何武; 徐争强

    2009-01-01

    On the basis of outdoors' geological surveying, taking Landsat-7 satellite images as resources, the remote sensing images was systemically processed with its software ERDAS;The geological features of Hoh Xil Basin were totally interpreted and distinguished based on the geological knowledge of remote sensing's formation analyzing techniques;According to MPAGIS, the formation information of fault and fold was extracted and it was embodied with diagram.The fault and fold's distribution and developing features of Hoh Xil Basin was found out, providing the reference for native geological survey and resource of oil and gas' research.%以Landsat-7 TM卫星影像为信息源,采用ERDAS遥感图像处理软件对其进行系统处理;以基于地学知识的遥感构造分析技术对可可西里盆地构造特征进行全面解译和识别,以MPAGIS为平台进行断裂、褶皱构造信息提取及专题制图,在对该区进行野外地质调查的基础上,查明了可可西里盆地断裂、褶皱构造的分布及发育特征,为国土资源调查及油气资源调查评价提供参考.

  14. Seasonal variations and depth dependence of soil radon concentration levels in different geological formations in Deir Abu-Said District, Irbid-Jordan

    Energy Technology Data Exchange (ETDEWEB)

    Al-Shereideh, S.A. [Department of Earth and Environmental Science, Yarmouk University, Irbid 21163 (Jordan)]. E-mail: enidal@yu.edu.jo; Bataina, B.A. [Physics Department, Yarmouk University, Irbid 21163 (Jordan); Ershaidat, N.M. [Physics Department, Yarmouk University, Irbid 21163 (Jordan)

    2006-07-15

    Soil radon concentration levels in Deir Abu-Said District, Irbid-Jordan were measured using CR-39 track detectors in both summer and winter at several depths over six geological formations. Seasonal variations of soil radon were measured at five depths (10, 25, 50, 75 and 100cm). At a depth of 100cm; soil radon concentration levels, in summer, range from 6.85kBqm{sup -3} for Muwaqqar Chalky-Marl (MCM) to 35.5kBqm{sup -3} for Al-Hisa Phosphatic (AHP) Limestone, while in winter the range is between 4.01 and 24.6kBqm{sup -3}, respectively. The highest values of soil radon concentration obtained are found for AHP in both seasons at all depths. This is related to the high content of uranium of this geological formation. As expected, our data show an increase of soil radon concentration levels with depth.

  15. Geological conditions of formation of beaches and natural medical assessment of their use in the resort and recreational purposes.

    Directory of Open Access Journals (Sweden)

    Storchak O.V.

    2010-06-01

    Full Text Available In assessing the territory waters and coast, their possible use in resort and recreational purposes, apply the criteria of terapeutic beaches subject to simultaneous patients stayin the bich,as well as geomorphological, hydrological and geological conditions.

  16. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 16. Repository preconceptual design studies: BPNL waste forms in salt

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Volume 16, ''Repository Preconceptual Design Studies: BPNL Waste Forms in Salt,'' is one of a 23 volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provide a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This document describes a preconceptual design for a nuclear waste storage facility in salt. The waste forms assumed to arrive at the repository were supplied by Battelle Pacific Northwest Laboratories (BPNL). The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/17, ''Drawings for Repository Preconceptual Design Studies: BPNL Waste Forms in Salt.''

  17. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 16. Repository preconceptual design studies: BPNL waste forms in salt

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This volume, Volume 16, ''Repository Preconceptual Design Studies: BPNL Waste Forms in Salt,'' is one of a 23 volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provide a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This document describes a preconceptual design for a nuclear waste storage facility in salt. The waste forms assumed to arrive at the repository were supplied by Battelle Pacific Northwest Laboratories (BPNL). The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/17, ''Drawings for Repository Preconceptual Design Studies: BPNL Waste Forms in Salt.''

  18. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110016 Cheng Shoude(Xinjiang Institute of Geology and Mineral Recources,Urumqi 830000,China);Liu Tong The Brief Description of the Division of Tectonic Units in the Five-Countries in Central Asia(Xinjiang Geology,ISSN1000-8845,CN65-1092/P,28(1),2010,p.16-21,1 illus.,21 refs.)Key words:tectonics,tectonic units,Central Asia The Five-Countries in Central-Asia border on Xinjiang in the West China,research have been performed in this area,the gists of the division of tectonic units are different from each other and the results are different in a thousand and one ways.According as the investigations of sedimentary formation,conformation,

  19. The Formation and Evolution of Tessera and Insights into the Beginning of Recorded History on Venus: Geology of the Fortuna Tessera Quadrangle (V-2)

    Science.gov (United States)

    Head, J. W.; Ivanov, M. A.

    2010-01-01

    Today, and throughout its recorded history, Venus can be classified as a "one-plate planet." The observable geological record of the planet comprises only the last 1/4 or less of its overall geologic history. As shown by many authors, it started with intensive deformation in broad regions to form tessera [1-6] during the Fortunian period of history [7]. The period of tessera formation quickly changed to numerous zonal deformational belts of ridges and grooves that were followed by emplacement of vast volcanic plains (shield plains, regional plains) [7,8]. During the final epoch of the geologic history of Venus, large but isolated centers of volcanism formed extensive fields of lavas, with tectonics concentrated within fewer very prominent rift zones [8,9]. The observable changes in intensity and character of volcanism and tectonics suggest progressive changes from thin lithosphere early in the geologic history to thick lithosphere during later epochs [6,10]. We have little idea of the character of the first 3/4 of Venus' history. So, what does the earliest period of recorded history tell us about the transition from the Pre-Fortunian to the Fortunian period and what insight does this give us into this earlier period?

  20. Book review: Economic geology: Principles and practice: Metals, minerals, coal and hydrocarbons—Introduction to formation and sustainable exploitation of mineral deposits

    Science.gov (United States)

    Anderson, Eric

    2013-01-01

    This volume, available in both hardcover and paperback, is an English translation of the fifth edition of the German language text Mineralische und Energie-Rohstoffe. The book provides an extensive overview of natural resources and societal issues associated with extracting raw materials. The comprehensive list of raw materials discussed includes metals, industrial minerals, coal, and hydrocarbons. The book is divided into four parts: (1) “Metalliferous ore deposits,” (2) “Nonmetallic minerals and rocks,” (3) “Practice of economic geology,” and (4) “Fossil energy raw materials—coal, oil, and gas.” These sections are bound by a brief introduction and an extensive list of up-to-date references as well as an index. Each chapter begins with a concise synopsis and concludes with a summary that contains useful suggestions for additional reading. All figures are grayscale images and line drawings; however, several have been grouped together and reproduced as color plates. Also included is a companion website (www.wiley.com/go/pohl/geology) that contains additional resources, such as digital copies of figures, tables, and an expanded index, all available for download in easy-to-use formats.Economic Geology: Principles and Practice: Metals, Minerals, Coal and Hydrocarbons—Introduction to Formation and Sustainable Exploitation of Mineral Deposits. Walter l. Pohl. 2011. Wiley-Blackwell. Pp. 663. ISBN 978-1-4443-3663-4 (paperback).

  1. Geology and stable isotope geochemistry of Paleoarchean sulfur. Formation, preservation and geobiology of ancient pyrite and barite

    NARCIS (Netherlands)

    Roerdink, D.L.

    2013-01-01

    Sulfur isotopes in ancient sulfate and sulfide minerals provide a comprehensive record of microbial processes involved in the early sulfur cycle on Earth. However, the interpretation of these isotopic signatures requires information on the geological context of such samples, because abiotic reaction

  2. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20041200 Peng Yujing (Regional Geology and Mineral Resources Survey of Jilin Province, Changchun, Jilin); Chen Erzhen A Preliminary Study on the Ore -Forming Geologic Events (Jilin Geology, ISSN 1001-2427, CN22-1099/P, 22(3), 2003, p. 1 -11, 23, 1 illus. , 38 refs. ) Key words: geological eventAn ore - forming geologic event, as a

  3. Geology of the Early Arikareean sharps formation on the Pine Ridge Indian Reservation and surrounding areas of South Dakota and Nebraska.

    Science.gov (United States)

    McConnell, Thomas H; Dibenedetto, Joseph N

    2012-01-01

    Based on geologic mapping, measured sections, and lithologic correlations, the local features of the upper and lower type areas of the Early Arikareean (30.8-20.6 million years ago) Sharps Formation are revised and correlated. The Sharps Formation above the basal Rockyford Member is divided into two members of distinct lithotypes. The upper 233 feet of massive siltstones and sandy siltstones is named the Gooseneck Road Member. The middle member, 161 feet of eolian volcaniclastic siltstones with fluvially reworked volcaniclastic lenses and sandy siltstone sheets, is named the Wolff Camp Member. An ashey zone at the base of the Sharps Formation is described and defined as the Rockyford Ash Zone (RAZ) in the same stratigraphic position as the Nonpareil Ash Zone (NPAZ) in Nebraska. Widespread marker beds of fresh water limestones at 130 feet above the base of the Sharps Formation and a widespread reddish-brown clayey siltstone at 165 feet above the base of the Sharps Formation are described. The Brown Siltstone Beds of Nebraska are shown to be a southern correlative of the Wolff Camp Member and the Rockyford Member of the Sharps Formation. Early attempts to correlate strata in the Great Plains were slow in developing. Recognition of the implications of the paleomagnetic and lithologic correlations of this paper will provide an added datum assisting researchers in future biostratigraphic studies. Based on similar lithologies, the Sharps Formation, currently assigned to the Arikaree Group, should be reassigned to the White River Group.

  4. Geology of the Early Arikareean Sharps Formation on the Pine Ridge Indian Reservation and Surrounding Areas of South Dakota and Nebraska

    Science.gov (United States)

    McConnell, Thomas H.; DiBenedetto, Joseph N.

    2012-01-01

    Based on geologic mapping, measured sections, and lithologic correlations, the local features of the upper and lower type areas of the Early Arikareean (30.8–20.6 million years ago) Sharps Formation are revised and correlated. The Sharps Formation above the basal Rockyford Member is divided into two members of distinct lithotypes. The upper 233 feet of massive siltstones and sandy siltstones is named the Gooseneck Road Member. The middle member, 161 feet of eolian volcaniclastic siltstones with fluvially reworked volcaniclastic lenses and sandy siltstone sheets, is named the Wolff Camp Member. An ashey zone at the base of the Sharps Formation is described and defined as the Rockyford Ash Zone (RAZ) in the same stratigraphic position as the Nonpareil Ash Zone (NPAZ) in Nebraska. Widespread marker beds of fresh water limestones at 130 feet above the base of the Sharps Formation and a widespread reddish-brown clayey siltstone at 165 feet above the base of the Sharps Formation are described. The Brown Siltstone Beds of Nebraska are shown to be a southern correlative of the Wolff Camp Member and the Rockyford Member of the Sharps Formation. Early attempts to correlate strata in the Great Plains were slow in developing. Recognition of the implications of the paleomagnetic and lithologic correlations of this paper will provide an added datum assisting researchers in future biostratigraphic studies. Based on similar lithologies, the Sharps Formation, currently assigned to the Arikaree Group, should be reassigned to the White River Group. PMID:23110098

  5. Geology of the Early Arikareean sharps formation on the Pine Ridge Indian Reservation and surrounding areas of South Dakota and Nebraska.

    Directory of Open Access Journals (Sweden)

    Thomas H McConnell

    Full Text Available Based on geologic mapping, measured sections, and lithologic correlations, the local features of the upper and lower type areas of the Early Arikareean (30.8-20.6 million years ago Sharps Formation are revised and correlated. The Sharps Formation above the basal Rockyford Member is divided into two members of distinct lithotypes. The upper 233 feet of massive siltstones and sandy siltstones is named the Gooseneck Road Member. The middle member, 161 feet of eolian volcaniclastic siltstones with fluvially reworked volcaniclastic lenses and sandy siltstone sheets, is named the Wolff Camp Member. An ashey zone at the base of the Sharps Formation is described and defined as the Rockyford Ash Zone (RAZ in the same stratigraphic position as the Nonpareil Ash Zone (NPAZ in Nebraska. Widespread marker beds of fresh water limestones at 130 feet above the base of the Sharps Formation and a widespread reddish-brown clayey siltstone at 165 feet above the base of the Sharps Formation are described. The Brown Siltstone Beds of Nebraska are shown to be a southern correlative of the Wolff Camp Member and the Rockyford Member of the Sharps Formation. Early attempts to correlate strata in the Great Plains were slow in developing. Recognition of the implications of the paleomagnetic and lithologic correlations of this paper will provide an added datum assisting researchers in future biostratigraphic studies. Based on similar lithologies, the Sharps Formation, currently assigned to the Arikaree Group, should be reassigned to the White River Group.

  6. Non-Darcian flow in low-permeability media: key issues related to geological disposal of high-level nuclear waste in shale formations

    Science.gov (United States)

    Liu, Hui-Hai

    2014-05-01

    In clay or other low-permeability media, water flow becomes non-Darcian and characterized by the non-linear relationship between water flux and hydraulic gradient. This work is devoted to addressing a number of key issues related to geological disposal of high-level nuclear waste in clay/shale formations. It is demonstrated that water flow velocity in the damaged zone (often considered as a potential preferential advection paths in a repository) surrounding the tunnel is extremely small, as a result of non-Darcian flow behavior, such that solute transport is dominated by diffusion, rather than advection. The finding is also consistent with the often-observed existence of persistent abnormal pressures in shale formations. While relative permeability is the key parameter for modeling the unsaturated flow process, without incorporating non-Darcian flow behavior, significant errors can occur in the determination of relative permeability values from traditional measurement methods. An approach for dealing with temperature impact on non-Darcian flow and a formulation to calculate non-Darcian water flux in an anisotropic medium are presented, taking into consideration that a geological repository is subject to temperature evolution in the near field as a result of heat generated by nuclear waste, and that shale formations are generally anisotropic.

  7. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091185 Duan Jianxiang(Institute of Geologic Survey of Jilin Province,Changchun 130061,China);Liu Jingbo Characteristics of Yaojia Formation Petrostratigraphy and Sedimentary Environment in the Songnen Basin in the Fuyu,Yushu Areas(Jilin Geology, ISSN1001-2427,CN22-1099/P,27

  8. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20152392 Geng Shufang(Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China);Liu Ping Deep Geological Structure Constraints on Shallow Geology and Mineralization:A Study in the Land and Sea Areas of East China(Marine Geology&Quaternary Geology,ISSN0256-1492,CN37-1117/P,34(6),2014,p.49-61,8illus.,13refs.,with English abstract)

  9. Risk Assessment and Management for Long-Term Storage of CO2 in Geologic Formations — United States Department of Energy R&D

    Directory of Open Access Journals (Sweden)

    Dawn Deel

    2007-02-01

    Full Text Available Concern about increasing atmospheric concentrations of carbon dioxide (CO2 and other greenhouse gases (GHG and their impact on the earth's climate has grown significantly over the last decade. Many countries, including the United States, wrestle with balancing economic development and meeting critical near-term environmental goals while minimizing long-term environmental risks. One promising solution to the buildup of GHGs in the atmosphere, being pursued by the U.S. Department of Energy's (DOE National Energy Technology Laboratory (NETL and its industrial and academic partners, is carbon sequestration—a process of permanent storage of CO2 emissions in underground geologic formations, thus avoiding CO2 release to the atmosphere. This option looks particularly attractive for point source emissions of GHGs, such as fossil fuel fired power plants. CO2 would be captured, transported to a sequestration site, and injected into an appropriate geologic formation. However, sequestration in geologic formations cannot achieve a significant role in reducing GHG emissions unless it is acceptable to stakeholders, regulators, and the general public, i.e., unless the risks involved are judged to be acceptable. One tool that can be used to achieve acceptance of geologic sequestration of CO2 is risk assessment, which is a proven method to objectively manage hazards in facilities such as oil and natural gas fields, pipelines, refineries, and chemical plants. Although probabilistic risk assessment (PRA has been applied in many areas, its application to geologic CO2 sequestration is still in its infancy. The most significant risk from geologic carbon sequestration is leakage of CO2. Two types of CO2 releases are possible—atmospheric and subsurface. High concentrations of CO2 caused by a release to the atmosphere would pose health risks to humans and animals, and any leakage of CO2 back into the atmosphere negates the effort expended to sequester the CO2

  10. Intermediate Scale Laboratory Testing to Understand Mechanisms of Capillary and Dissolution Trapping during Injection and Post-Injection of CO2 in Heterogeneous Geological Formations

    Energy Technology Data Exchange (ETDEWEB)

    Illangasekare, Tissa [Colorado School of Mines, Golden, CO (United States); Trevisan, Luca [Colorado School of Mines, Golden, CO (United States); Agartan, Elif [Colorado School of Mines, Golden, CO (United States); Mori, Hiroko [Colorado School of Mines, Golden, CO (United States); Vargas-Johnson, Javier [Colorado School of Mines, Golden, CO (United States); Gonzalez-Nicolas, Ana [Colorado School of Mines, Golden, CO (United States); Cihan, Abdullah [Colorado School of Mines, Golden, CO (United States); Birkholzer, Jens [Colorado School of Mines, Golden, CO (United States); Zhou, Quanlin [Colorado School of Mines, Golden, CO (United States)

    2015-03-31

    Carbon Capture and Storage (CCS) represents a technology aimed to reduce atmospheric loading of CO2 from power plants and heavy industries by injecting it into deep geological formations, such as saline aquifers. A number of trapping mechanisms contribute to effective and secure storage of the injected CO2 in supercritical fluid phase (scCO2) in the formation over the long term. The primary trapping mechanisms are structural, residual, dissolution and mineralization. Knowledge gaps exist on how the heterogeneity of the formation manifested at all scales from the pore to the site scales affects trapping and parameterization of contributing mechanisms in models. An experimental and modeling study was conducted to fill these knowledge gaps. Experimental investigation of fundamental processes and mechanisms in field settings is not possible as it is not feasible to fully characterize the geologic heterogeneity at all relevant scales and gathering data on migration, trapping and dissolution of scCO2. Laboratory experiments using scCO2 under ambient conditions are also not feasible as it is technically challenging and cost prohibitive to develop large, two- or three-dimensional test systems with controlled high pressures to keep the scCO2 as a liquid. Hence, an innovative approach that used surrogate fluids in place of scCO2 and formation brine in multi-scale, synthetic aquifers test systems ranging in scales from centimeter to meter scale developed used. New modeling algorithms were developed to capture the processes controlled by the formation heterogeneity, and they were tested using the data from the laboratory test systems. The results and findings are expected to contribute toward better conceptual models, future improvements to DOE numerical codes, more accurate assessment of storage capacities, and optimized placement strategies. This report presents the experimental and modeling methods

  11. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140958 Mei Huicheng(No.915GeologicalBrigade,Jiangxi Bureau of Geology and Mineral Resources,Nanchang 330002,China);Li Zhongshe Geological Features and Causes of the Huihuang Geotherm in Xiushui,Jiangxi Province(Journal of Geological Hazards and

  12. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20090700 Chen Anshu(Tianjin Institute of Geology and Mineral Resources,China Geological Survey,Tianjin 300170,China);Li Xiaoguang 1:250 000-Scale Regional Geological Map Spatial Database(Geological Survey and Research,ISSN1672-4135,CN12-1353/P,31(1),2008,p.64-69,2 illus.,2 tables,5 refs.)

  13. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140805Fan Baocheng(Xi’an Center of Geological Survey,China Geology Survey,Xi’an710054,China);Meng Guanglu The Geological Evolution and Metallization of TalasKalatawu Block in Northern Tianshan,Kyrgyzstan(Northwestern Geology,ISSN1009-6248,CN61-1149/P,46(2),2013,p.54-

  14. Characterization of Pliocene and Miocene Formations in the Wilmington Graben, Offshore Los Angeles, for Large-Scale Geologic Storage of CO₂

    Energy Technology Data Exchange (ETDEWEB)

    Bruno, Michael [Geomechanics Technologies, Incorporated, Monrovia, CA (United States)

    2014-12-08

    Geomechanics Technologies has completed a detailed characterization study of the Wilmington Graben offshore Southern California area for large-scale CO₂ storage. This effort has included: an evaluation of existing wells in both State and Federal waters, field acquisition of about 175 km (109 mi) of new seismic data, new well drilling, development of integrated 3D geologic, geomechanics, and fluid flow models for the area. The geologic analysis indicates that more than 796 MMt of storage capacity is available within the Pliocene and Miocene formations in the Graben for midrange geologic estimates (P50). Geomechanical analyses indicate that injection can be conducted without significant risk for surface deformation, induced stresses or fault activation. Numerical analysis of fluid migration indicates that injection into the Pliocene Formation at depths of 1525 m (5000 ft) would lead to undesirable vertical migration of the CO₂ plume. Recent well drilling however, indicates that deeper sand is present at depths exceeding 2135 m (7000 ft), which could be viable for large volume storage. For vertical containment, injection would need to be limited to about 250,000 metric tons per year per well, would need to be placed at depths greater than 7000ft, and would need to be placed in new wells located at least 1 mile from any existing offset wells. As a practical matter, this would likely limit storage operations in the Wilmington Graben to about 1 million tons per year or less. A quantitative risk analysis for the Wilmington Graben indicate that such large scale CO₂ storage in the area would represent higher risk than other similar size projects in the US and overseas.

  15. Radio-astrochronology of the Agrio Formation (Neuquén Basin, Argentina) to reduce the uncertainties of the geological time scale in Early Cretaceous times

    Science.gov (United States)

    Martinez, Mathieu; Beatriz, Aguirre-Urreta; Marina, Lescano; Julieta, Omarini; Maisa, Tunik; Thomas, Frederichs; Anna-Leah, Nickl; Heiko, Pälike

    2017-04-01

    Important discrepancies between the numerical ages stated by the Geological Time Scale 2016 and radio-astrochronological works have been reported in the last years (Aguirre-Urreta et al., 2015; Martinez et al., 2015; Ogg et al., 2016). Large uncertainties notably exist for the Valanginian-Hauterivian stages for which the recently provided timescales are still debated. Here, we present an astronomical calibration for the Agrio Formation (Neuquén Basin, Argentina) to better constraint the durations of the Valanginian and the Hauterivian stages. The formation is divided into a lower and an upper member (called Pilmatué and Agua de la Mula members, respectively) composed of marl-limestone alternations deposited in a semi-pelagic to outer ramp environment and related to an orbital forcing (Sagasti, 2005). A rapidly (Elsevier B.V., 243 pp. Sagasti, G., 2005. Hemipelagic record of orbitally-induced dilution cycles in Lower Cretaceous sediments of the Neuquén Basin, in Veiga, G.D., Spaletti, L.A., Howell, J.A. and Schwarz E. (Eds.). The Neuquén Basin, Argentina: A Case Study in Sequence Stratigraphy and Basin Dynamics. Geological Society, London, Special Publications 252, 231-250.

  16. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071510 Chen Ge(No.282 Geological Par- ty,Geological Bureau of Sichuan Nuclear In- dustry,Deyang,Sichuan 618000)Assess- ment of Geological Hazards in the Sichuan Sector of the Nanchong-Wanzhou 500 KV Transmisson Line Engineering(Acta Geolog- ica Sichuan,ISSN 1006-0995,CN 51- 1273/P,26(2),2006,p.88-93,2 tables) Key words:geologic hazards,construction field,Sichuan Province Possibility of inducing and intensifying geological hazards by the Nanhong- Wanzhou 500 KV transmission line engineer- ing,geological hazards which probably occur

  17. Radioactivity of rocks from the geological formations belonging to the Tibagi River hydrographic basin; Radioatividade de rochas provenientes das formacoes geologicas pertencentes a bacia hidrografica do Rio Tibagi

    Energy Technology Data Exchange (ETDEWEB)

    Bastos, Rodrigo Oliveira

    2008-07-01

    This work is a study of the {sup 40}K and the {sup 238}U and {sup 232}Th series radioactivity in rocks measured with high resolution gamma ray spectrometry. The rocks were taken from the geologic formations in the region of the Tibagi river hydrographic basin. The course of this river cuts through the Paleozoic and Mesozoic stratigraphic sequences of the Parana sedimentary basin. In order to take into account the background radiation attenuation by the samples, a technique was developed that eliminated the need to measure a blank sample. The effects of the radiation's self-attenuation in the sample matrix were taken into account by using a gamma ray direct transmission method. The results for 87 rock samples, taken from 14 distinct formations, and their corresponding radioactivity variations are presented and discussed according to the possible geological processes from which they originated. Among the most discussed results are: an outcrop that profiles shale, limestone and rhythmite in the Irati Formation; a sandstone and siltstone sequence from the Rio do Rasto Formation; and a profile sampled in a coal mine located in the Rio Bonito Formation. The calculations of the rocks' contributions to the outdoor gamma radiation dose rate agree with the values presented by other authors for similar rocks. The highest dose values were obtained from felsic rocks (rhyolite of the Castro group, 129.8 {+-} 3.7 nGy.h{sup -1}, and Cunhaporanga granite, 167 {+-} 37 nGy.h{sup -1}). The other highest values correspond to the shale rocks from the Irati Formation (109 {+-} 16 nGy.h{sup -1}) and the siltic shale rocks from the Ponta Grossa Formation (107.9 {+-} 0.7 nGy.h{sup -1}). The most recent geological formations presented the lowest dose values (e.g. the Botucatu sandstone, 3.3 {+-} 0.6 nGy.h{sup -1}). The average value for sedimentary rocks from seven other formations is equal to 59 {+-} 26 nGy.h{sup -1}. The Rio Bonito Formation presented the highest dose value (334

  18. Late Quaternary Normal Faulting and Hanging Wall Basin Evolution of the Southwestern Rift Margin From Gravity and Geology, B.C.S., MX and Exploring the Influence of Text-Figure Format on Introductory Geology Learning

    Science.gov (United States)

    Busch, Melanie M. D.

    2011-12-01

    An array of north-striking, left-stepping, active normal faults is situated along the southwestern margin of the Gulf of California. This normal fault system is the marginal fault system of the oblique-divergent plate boundary within the Gulf of California. To better understand the role of upper-crustal processes during development of an obliquely rifted plate margin, gravity surveys were conducted across the normal-fault-bounded basins within the gulf-margin array and, along with optically stimulated luminescence dating of offset surfaces, fault-slip rates were estimated and fault patterns across basins were assessed, providing insight into sedimentary basin evolution. Additionally, detailed geologic and geomorphic maps were constructed along two faults within the system, leading to a more complete understanding of the role of individual normal faults within a larger array. These faults slip at a low rate (0.1--1 mm/yr) and have relatively shallow hanging wall basins (˜500--3000 m). Overall, the gulf-margin faults accommodate protracted, distributed deformation at a low rate and provide a minor contribution to overall rifting. Integrating figures with text can lead to greater science learning than when either medium is presented alone. Textbooks, composed of text and graphics, are a primary source of content in most geology classes. It is essential to understand how students approach learning from text and figures in textbook-style learning materials and how the arrangement of the text and figures influences their learning approach. Introductory geology students were eye tracked while learning from textbook-style materials composed of text and graphics. Eye fixation data showed that students spent less time examining the figure than the text, but the students who more frequently examined the figure tended to improve more from the pretest to the posttest. In general, students tended to examine the figure at natural breaks in the reading. Textbook-style materials

  19. Geologic framework, age, and lithologic characteristics of the North Park Formation in North Park, north-central Colorado

    Science.gov (United States)

    Shroba, Ralph R.

    2016-10-18

    Deposits of the North Park Formation of late Oligocene and Miocene age are locally exposed at small, widely spaced outcrops along the margins of the roughly northwest-trending North Park syncline in the southern part of North Park, a large intermontane topographic basin in Jackson County in north-central Colorado. These outcrops suggest that rocks and sediments of the North Park Formation consist chiefly of poorly consolidated sand, weakly cemented sandstone, and pebbly sandstone; subordinate amounts of pebble conglomerate; minor amounts of cobbly pebble gravel, siltstone, and sandy limestone; and rare beds of cobble conglomerate and altered tuff. These deposits partly filled North Park as well as a few small nearby valleys and half grabens. In North Park, deposits of the North Park Formation probably once formed a broad and relatively thick sedimentary apron composed chiefly of alluvial slope deposits (mostly sheetwash and stream-channel alluvium) that extended, over a distance of at least 150 kilometers (km), northwestward from the Never Summer Mountains and northward from the Rabbit Ears Range across North Park and extended farther northwestward into the valley of the North Platte River slightly north of the Colorado-Wyoming border. The maximum preserved thickness of the formation in North Park is about 550 meters near the southeastern end of the North Park syncline.The deposition of the North Park Formation was coeval in part with local volcanism, extensional faulting, development of half grabens, and deposition of the Browns Park Formation and Troublesome Formation and was accompanied by post-Laramide regional epeirogenic uplift. Regional deposition of extensive eolian sand sheets and loess deposits, coeval with the deposition of the North Park Formation, suggests that semiarid climatic conditions prevailed during the deposition of the North Park Formation during the late Oligocene and Miocene.The North Park Formation locally contains a 28.1-mega-annum (Ma

  20. Structural and stratigraphic evolution of the central Mississippi Canyon area: Interaction of salt tectonics and slope processes in the formation of engineering and geologic hazards

    Science.gov (United States)

    Brand, John Richard

    Approximately 720 square miles of digital 3-dimensional seismic data covering the eastern Mississippi Canyon area, Gulf of Mexico, continental shelf was used to examine the structural and stratigraphic evolution of the geology in the study area. The analysis focused on salt tectonics and sequence stratigraphy to develop a geologic model for the study area and its potential impact on engineering and geologic hazards. Salt in the study area was found to be established structural end-members derived from shallow-emplaced salt sheets. The transition from regional to local salt tectonics was identified through structural deformation of the stratigraphic section on the seismic data and occurred no later than ˜450,000 years ago. From ˜450,000 years to present, slope depositional processes have become the dominant geologic process in the study area. Six stratigraphic sequences (I-VI) were identified in the study area and found to correlate with sequences previously defined for the Eastern Mississippi Fan. Condensed sections were the key to the correlation. The sequence stratigraphy for the Eastern Mississippi Fan can be extended ˜28 miles west, adding another ˜720 square miles to the interpreted Fan. A previously defined channel within the Eastern Fan was identified in the study area and extended the channel ˜28 miles west. Previous work on the Eastern Fan identified the source of the Fan to be the Mobile River; however, extending the channel west suggests the sediment source to be from the Mississippi River, not the Mobile River. Further evidence for this was found in ponded turbidites whose source has been previously established as the Mississippi River. Ages of the stratigraphic sequences were compared to changes in eustatic sea level. The formation stratigraphic sequences appear decoupled from sea level change with "pseudo-highstands" forming condensed sections during pronounced Pleistocene sea level lowstands. Miocene and Pleistocene depositional analogues

  1. Enhancing the revision of the static geological model of the Stuttgart Formation at the Ketzin pilot site by integration of reservoir simulations and 3D seismics

    Science.gov (United States)

    Kempka, Thomas; Norden, Ben; Ivanova, Alexandra; Lüth, Stefan

    2017-04-01

    Pilot-scale carbon dioxide storage has been performed at the Ketzin pilot site in Germany from June 2007 to August 2013 with about 67 kt of CO2 injected into the Upper Triassic Stuttgart Formation. In this context, the main aims focussed on verification of the technical feasibility of CO2 storage in saline aquifers and development of efficient strategies for CO2 behaviour monitoring and prediction. A static geological model has been already developed at an early stage of this undertaking, and continuously revised with the availability of additional geological and operational data as well as by means of reservoir simulations, allowing for revisions in line with the efforts to achieve a solid history match in view of well bottomhole pressures and CO2 arrival times at the observation wells. Three 3D seismic campaigns followed the 2005 3D seismic baseline in 2009, 2012 and 2015. Consequently, the interpreted seismic data on spatial CO2 thickness distributions in the storage reservoir as well as seismic CO2 detection limits from recent conformity studies enabled us to enhance the previous history-matching results by adding a spatial component to the previous observations, limited to points only. For that purpose, we employed the latest version of the history-matched static geological reservoir model and revised the gridding scheme of the reservoir simulation model by coarsening and introducing local grid refinements at the areas of interest. Further measures to ensure computational efficiency included the application of the MUFITS reservoir simulator (BLACKOIL module) with PVT data derived from the MUFITS GASSTORE module. Observations considered in the inverse model calibration for a simulation time of about 5 years included well bottomhole pressures, CO2 arrival times and seismically determined CO2 thickness maps for 2009 and 2012. Pilot points were employed by means of the PEST++ inverse simulation framework to apply permeability multipliers, interpolated by kriging

  2. Geologic controls on the formation and evolution of quaternary coastal deposits of the northern Gulf of Mexico

    Science.gov (United States)

    Williams, S.J.; Penland, S.; Sallenger, A.H.; McBride, R.A.; Kindlinger, J.L.

    1991-01-01

    A study of the barrier islands and wetlands in the deltaic plain of Louisiana is presented. Its purpose was to document rapid changes and to learn more about the processes responsible and the geologic framework within which they operate. It included systematic collection and analysis of precision nearshore hydrographic data, high resolution seismic profiles, surface sediment samples, continuous vibracores, digital shoreline plots, records of storm overwash events, and analysis of tide gage records to quantify the rise in relative sea level. Results from these studies demonstrate that deltaic progradation, river channel switching, and subsequent rapid erosion accompanying the marine transgression are regular and predictable events along the Mississippi River delta plain and will likely continue in the future. Mitigation measures, such as shoreline nourishment and barrier restoration, that mimic the natural processes may slow the land loss.

  3. A Novel True Triaxial Apparatus to Study the Geomechanical and Fluid Flow Aspects of Energy Exploitations in Geological Formations

    Science.gov (United States)

    Li, Minghui; Yin, Guangzhi; Xu, Jiang; Li, Wenpu; Song, Zhenlong; Jiang, Changbao

    2016-12-01

    Fluid-solid coupling investigations of the geological storage of CO2, efficient unconventional oil and natural gas exploitations are mostly conducted under conventional triaxial stress conditions ( σ 2 = σ 3), ignoring the effects of σ 2 on the geomechanical properties and permeability of rocks (shale, coal and sandstone). A novel multi-functional true triaxial geophysical (TTG) apparatus was designed, fabricated, calibrated and tested to simulate true triaxial stress ( σ 1 > σ 2 > σ 3) conditions and to reveal geomechanical properties and permeability evolutions of rocks. The apparatus was developed with the capacity to carry out geomechanical and fluid flow experiments at high three-dimensional loading forces and injection pressures under true triaxial stress conditions. The control and measurement of the fluid flow with effective sealing of rock specimen corners were achieved using a specially designed internally sealed fluid flow system. To validate that the apparatus works properly and to recognize the effects of each principal stress on rock deformation and permeability, stress-strain and permeability experiments and a hydraulic fracturing simulation experiment on shale specimens were conducted under true triaxial stress conditions using the TTG apparatus. Results show that the apparatus has advantages in recognizing the effects of σ 2 on the geomechanical properties and permeability of rocks. Results also demonstrate the effectiveness and reliability of the novel TTG apparatus. The apparatus provides a new method of studying the geomechanical properties and permeability evolutions of rocks under true triaxial stress conditions, promoting further investigations of the geological storage of CO2, efficient unconventional oil and gas exploitations.

  4. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology,

  5. Engineering Geology.

    Science.gov (United States)

    Ivey, John B.

    1983-01-01

    Engineering geology activities in government and the private sector are highlighted. Also highlighted are conferences in this field, awards presented at conferences (including an award to an undergraduate geology student), and a new publication "Geotechnology in Massachusetts." (JN)

  6. Evaluation of the geological relationships to gas hydrate formation and stability. Progress report, June 16--September 30, 1988

    Energy Technology Data Exchange (ETDEWEB)

    Krason, J.; Finley, P.

    1988-12-31

    The summaries of regional basin analyses document that potentially economic accumulations of gas hydrates can be formed in both active and passive margin settings. The principal requirement for gas hydrate formation in either setting is abundant methane. Passive margin sediments with high sedimentation rates and sufficient sedimentary organic carbon can generate large quantities of biogenic methane for hydrate formation. Similarly, active margin locations near a terrigenous sediment source can also have high methane generation potential due to rapid burial of adequate amounts of sedimentary organic matter. Many active margins with evidence of gas hydrate presence correspond to areas subject to upwelling. Upwelling currents can enhance methane generation by increasing primary productivity and thus sedimentary organic carbon. Structural deformation of the marginal sediments at both active and passive sites can enhance gas hydrate formation by providing pathways for migration of both biogenic and thermogenic gas to the shallow gas hydrate stability zone. Additionally, conventional hydrocarbon traps may initially concentrate sufficient amounts of hydrocarbons for subsequent gas hydrate formation.

  7. Axisymmetric analysis of multilayered thermoelastic media with application to a repository for heat-emitting high-level nuclear waste in a geological formation

    Science.gov (United States)

    Yang, Yang; Datcheva, Maria; Schanz, Tom

    2016-08-01

    Comprehensive analytical solutions to 3-D axisymmetric problems for static response of multilayered thermoelastic media subjected to surface loads and containing sources are presented in this study. The solution strategy employs Laplace and Hankel transforms to the field variables. The problem is formulated in cylindrical coordinate system and in this coordinate system vector surface harmonics and generalized propagator matrix are introduced to find the solution for the problem for the behaviour of thermoelastic multilayered media subject to surface loads and containing heat sources. A high-order adaptive Gaussian quadrature method with continued fraction expansions is employed to approximate the integral solutions expressed in terms of semi-infinite Hankel-type integrals. It is the first time to apply the proposed solution method to investigate the behaviour of repository for heat-emitting high-level nuclear waste (HLW) in a geological formation where the HLW can be regarded as a decaying with time point heat source.

  8. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20160639Cai Wutian(Center for Hydrogeology a nd Environmental Geology Survey,China Geological Survey,Baoding071051,China)Several Issues on Contaminated Sites(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,42(1),2015,p.123

  9. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20142560Hu Hongxia(Regional Geological and Mineral Resources Survey of Jilin Province,Changchun 130022,China);Dai Lixia Application of GIS Map Projection Transformation in Geological Work(Jilin Geology,ISSN1001-2427,CN22-1099/P,32(4),2013,p.160-163,4illus.,2refs.)

  10. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20081307 Cao Xiping(Geological Museum of China,Beijing 100034)Discussion on the Digitization of Geological Specimen Information and Digital Geological Museum Construction(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,28(2),2007,p.205-208,1 illus.,1 table,4 refs.)

  11. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20152086 Liu Lei(Shandong Zhengyuan Geo-logical Exploration Institute,China Metallurgical Geology Bureau,Jinan 250101,China)Comparison of Gridding Effect of MapGIS Software(Contributions to Geology and Mineral Resources Research,ISSN1001-1412,CN12

  12. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091383 Cui Yiwen(First Geology and Mineral Resources Prospecting Team of Qinghai Province,Ping’an 810600,China);Zhang Liling Quaternary Three-Dimensional Model of Geological Structures of Changchun City(Jilin Geology,ISSN1001-2427,CN22 -1099/P,27(2),2008,p.125-130,10 illus.,4 tables,14 refs.,with English abstract)

  13. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20132393 Lü Guxian(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China);Li Xiuzhang Research and Development of Orefield Geology(Geology and Prospecting,ISSN0495-5331,CN11-2043/P,48(6),2012,p.1143-1150,3illus.,1table,46refs.)Key words:study of mineral deposit

  14. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20150901Dai Chuangu(Guizhou Academy of Geologic Survey,Guiyang550005,China);Zheng Qiqian Geological Background Study of Metallogenic in Haixi-Yanshan Tectonic Cycle in Guizhou Province(Guizhou Geology,ISSN1000-5943,CN52-1059/P,31(2),2014,p.82-88,3illus.,2tables,13refs.)Key words:metallogenesis,metallogenic area,

  15. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20160938Gao Xiaowei(Wuhan Center of Geo-logical Survey,China Geological Survey,Wuhan 430223,China);Wu Xiurong Two Types of Terrain and Regional Mineralization in Sumatra,Indonesia(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,34

  16. Issues of engineering and geochemistry in the sequestration of carbon dioxide in geological formations-saline aquifers

    Science.gov (United States)

    Garcia Orrego, Gloria Stella

    Dynamic tests were conducted to evaluate the feasibility to sequester carbon dioxide (CO2) in carbonate dolomite reservoir. Two injection rates, 0.1613 cc/min (20 pore volumes) and 0.982 cc/min (120 pore volumes) were tested to observe changes in petrophysical parameters mainly permeability and porosity under these two conditions of flow rates. The low flow rate was allowed to evaluate the effect of the bulk of the reservoir and the high flow rate evaluated the effect of dissolution on the face of the formation. The testes were carried out at reservoir-simulated conditions (2000 psia and 150°F). San Andres dolomite formation cores from wells 744 and 745 drilled during pilot area evaluation in Levelland Field. The core samples used have a high content of anhydrite and they are cemented mainly by calcite. The formation water used is representative of the Permian basin brine which has sodium 18,000 mg/L, chlorine 46,200 mg/L, calcium 6000 mg/L, sulfate 4880 mg/L, magnesium 1820 mg/L and potassium 1510 mg/L. The injection of low pore volumes was found to reduce the permeability in about 50%, the pore volume and porosity in about 25%, and the total equilibrium magnetization (Mo) from NMR T2 distribution decreased in about 17% indicating substantial reduction in porosity and permeability. The small pore sizes (bulk volume irreducible-BVI) increased in average in about 70% and the large pore sized (free fluid index-FFI) decreased in about 24%. The injection of high pore volume showed slight increase of the petrophysical properties. The total equilibrium magnetization and BVI and FFI did not present remarkable change. At the onset of this research, it was still uncertain how the interaction between CO2 and formation brine affects the geochemistry of the reservoir. Therefore, several static tests at supercritical conditions (1070 psia and 88°F) and at reservoir conditions with and without rock samples were carried out. After running the static tests for seven days, a

  17. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141655 Gao Linzhi(Institute of Geology,CAGS,Beijing 100037,China);Ding Xiaozhong The Revision of the Chentangwu Formation in Neoproterozoic Stratigraphic Column:Constraints on Zircon U-Pb Dating of Tuff from the Mengshan Section in Pujiang County,Zhejiang Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.988-995,5 illus.,1 plate,2 tables,24 refs.)

  18. ECONOMIC GEOLOGY (5)GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071202 Bai Fu(Second Prospecting Insti- tute of Geology and Mineral Resources of the Gansu Bureau of Geology and Mineral Re- sources,Lanzhou 730020,China);Ma Genxi Analysis of the Occurrence of the Geother- mal Resources in Lanzhou,Gansu Province (Hydrogeology & Engineering Geology,

  19. Geology's Impact on Culture

    Science.gov (United States)

    Pizzorusso, Ann

    2017-04-01

    Most people consider geology boring, static and difficult. The fields of astronomy and physics have "rebranded" themselves with exciting programs formatted so as to be readily understandable to the general public. The same thing can be done for geology. My research on geology's influence on other disciplines has resulted in a book, Tweeting da Vinci, in which I was able to show how geology affected Italy's art, architecture, medicine, religion, literature, engineering and just about everything else. The reaction to the book and my lectures by both students and the general public has been very positive, including four gold medals, with reviews and comments indicating that they never knew geology could be so exciting. The book is very user friendly, packed with facts, full-color photos, paintings, sketches and illustrations. Complex aspects of geology are presented in an easily understandable style. Widely diverse topics—such as gemology, folk remedies, grottoes, painting, literature, physics and religion—are stitched together using geology as a thread. Quoting everyone from Pliny the Elder to NASA physicist Friedemann Freund, the work is solidly backed scholarship that reads as easily as a summer novel. The book can be used in classes such as physics, chemistry, literature, art history, medicine, Classical Studies, Latin, Greek and Italian. By incorporating a "geologic perspective" in these courses, it can be perceived as a more "all encompassing" discipline and encourage more students to study it. The lectures I have given on college campuses have resulted in students seeing their own majors from a different perspective and some have even signed up for introductory geology courses. One college organized summer course to the Bay of Naples based on the book. We followed the geology as well as the culture of the area and the students were profoundly moved. To encourage dialog, the book is linked to Facebook, Twitter and Instagram. This has enabled followers from

  20. Engineering geological characteristics and the hydraulic fracture propagation mechanism of the sand-shale interbedded formation in the Xu5 reservoir

    Science.gov (United States)

    Lu, Cong; Li, Mei; Guo, Jian-Chun; Tang, Xu-Hai; Zhu, Hai-Yan; Yong-Hui, Wang; Liang, Hao

    2015-06-01

    In the Xu5 formation the sandstone reservoir and the shale reservoir are interbedded with each other. The average thickness of each formation is about 8 m, which increases the difficulty of the hydraulic fracturing treatment. The shale thickness ratio (the ratio of shale thickness to formation thickness) is 55-62.5%. The reservoir is characterized by ultra-low porosity and permeability. The brittleness index of sandstone is 0.5-0.8, and the brittleness index of shale is 0.3-0.8. Natural fractures are poorly developed and are mainly horizontal and at a low angle. The formation strength is medium and the reservoir is of the hybrid strike-slip fault and reverse fault stress regime. The difference between the minimum principal stress and the vertical stress is small, and the maximum horizontal principal stress is 20 MPa higher than the minimum horizontal principal stress and vertical stress. A mechanical model of a hydraulic fracture encountering natural fractures is built according to geological characteristics. Fracture mechanics theory is then used to establish a hydraulic fracturing model coupling the seepage-stress-damage model to simulate the initiation and propagation of a fracture. The hydraulic fracture geometry is mainly I-shaped and T-shaped, horizontal propagation dominates the extension, and vertical propagation is limited. There is a two to three meter stress diversion area around a single hydraulic fracture. The stress diversion between a hydraulic fracture and a natural fracture is advantageous in forming a complex fracture. The research results can provide theoretical guidance for tight reservoir fracturing design.

  1. PNG formatted images of Multi-channel streamer seismic-reflection profiles collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological...

  2. PNG formatted images of mulitchannel boomer seismic-reflection profiles collected by the U.S. Geological Survey in Vineyard Sound, MA, 2011.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  3. PNG Images of chirp sub-bottom profiler data collected by the U.S. Geological Survey offshore of Fire Island, NY in 2011 (PNG Image Format)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The U.S. Geological Survey (USGS) mapped approximately 336 square kilometers of the lower shoreface and inner-continental shelf offshore of Fire Island, New York in...

  4. PNG Images of chirp sub-bottom profiler data collected by the U.S. Geological Survey offshore of Fire Island, NY in 2011 (PNG Image Format)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The U.S. Geological Survey (USGS) mapped approximately 336 square kilometers of the lower shoreface and inner-continental shelf offshore of Fire Island, New York in...

  5. PNG formatted images of mulitchannel boomer seismic-reflection profiles collected by the U.S. Geological Survey in Vineyard Sound and Buzzards Bay, MA, 2010.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  6. PNG images of Edgetech SB-512i seismic-reflection data collected in 2014 by the U.S. Geological Survey offshore of Fire Island, NY (PNG Format).

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The U.S. Geological Survey (USGS) conducted a geophysical and sampling survey in October 2014 that focused on a series of shoreface-attached ridges offshore of...

  7. PNG formatted images of Multi-channel streamer seismic-reflection profiles collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological...

  8. Petroleum systems and geologic assessment of undiscovered oil and gas, Cotton Valley group and Travis Peak-Hosston formations, East Texas basin and Louisiana-Mississippi salt basins provinces of the northern Gulf Coast region. Chapters 1-7.

    Science.gov (United States)

    ,

    2006-01-01

    The purpose of the U.S. Geological Survey's (USGS) National Oil and Gas Assessment is to develop geologically based hypotheses regarding the potential for additions to oil and gas reserves in priority areas of the United States. The USGS recently completed an assessment of undiscovered oil and gas potential of the Cotton Valley Group and Travis Peak and Hosston Formations in the East Texas Basin and Louisiana-Mississippi Salt Basins Provinces in the Gulf Coast Region (USGS Provinces 5048 and 5049). The Cotton Valley Group and Travis Peak and Hosston Formations are important because of their potential for natural gas resources. This assessment is based on geologic principles and uses the total petroleum system concept. The geologic elements of a total petroleum system include hydrocarbon source rocks (source rock maturation, hydrocarbon generation and migration), reservoir rocks (sequence stratigraphy and petrophysical properties), and hydrocarbon traps (trap formation and timing). The USGS used this geologic framework to define one total petroleum system and eight assessment units. Seven assessment units were quantitatively assessed for undiscovered oil and gas resources.

  9. Geology and geochemistry of the Macheng Algoma-type banded iron-formation, North China Craton: Constraints on mineralization events and genesis of high-grade iron ores

    Science.gov (United States)

    Wu, Huaying; Niu, Xianglong; Zhang, Lianchang; Pirajno, Franco; Luo, Huabao; Qin, Feng; Cui, Minli; Wang, Changle; Qi, Min

    2015-12-01

    The Macheng iron deposit is located in the eastern Hebei province of the North China Craton (NCC). It is hosted in Neoarchean metamorphic rocks of Baimiaozi formation in the Dantazi Group, consisting of biotite-leptynite, plagioclase-gneiss, plagioclase-amphibolite, migmatite, migmatitic granite and quartz schist. Geochemical analyses of the host biotite leptynite and plagioclase amphibolites show that their protoliths are both volcanics, inferred to be trachytic basalt and basaltic andesite, respectively. Based on the geochemical signature of the host rocks, together with geology of the iron deposit, it is inferred that the Macheng BIF is an Algoma-type iron exhalative formation, formed in an arc-related basin in the Neoarchean. Post-Archean Australian Shale (PAAS)-normalized rare earth elements (REEs) plus yttrium (Y) concentrations of different BIF ores with gneissic, striated and banded structure in the Macheng deposit, show similar patterns with depletions in light rare earth elements (LREEs) and middle rare earth elements (MREEs) relative to heavy rare earth elements (HREEs) and with apparently positive La, Y and Eu anomalies. Y/Ho ratios of the gneissic, striated and banded BIF ores vary from 37 to 56. These geochemical features of the BIF ores reveal their affinity with the sea water and the presence of a high-temperature hydrothermal component, indicating that both the seawater and high temperature hydrothermal fluids derived from alteration of oceanic basalts and komatiites may contribute to formation of the Macheng BIF. Geological, mineralogical and geochemical studies of the Macheng deposit recognized two kinds of high-grade iron ores. One is massive oxidized high-grade ore (Fe2O3T = 74.37-86.20 wt.%), mainly consisting of hematite with some magnetite, which shows geochemical characteristics of the gneissic, striated and banded BIF ores. The other type is magnetite high-grade ore, also massive and consisting of magnetite, with distinct characteristics

  10. Multiple scale physical and numerical modeling for improved understanding of mechanisms of trapping and leakage of CO2 in deep geologic formations

    Science.gov (United States)

    Illangasekare, T.; Plampin, M.; Trevisan, L.; Agartan, E.; Mori, H.; Sakaki, T.; Cihan, A.; Birkholzer, J.; Zhou, Q.; Pawar, R.; Zyvoloski, G.

    2012-04-01

    The fundamental processes associated with trapping and leakage of CO2 in deep geologic formations are complex. Formation heterogeneity manifested at all scales is expected to affect capillary and dissolution trapping and leakage of gaseous CO2 to the shallow subsurface. Research is underway to improve our fundamental understanding of trapping and leakage. This research involves experimentation in multiple scales and modeling focusing on effects of formation heterogeneity. The primary hypothesis that drives this research is that when the effects of heterogeneity on entrapment and leakage are understood, it will be possible to design more effective and safe storage schemes. Even though field investigations have some value in understanding issues related to large scale behavior and performance assessment, a fundamental understanding of how the heterogeneity affects trapping is difficult or impossible to obtain in field settings. Factors that contribute to these difficulties are the inability to fully characterize the formation heterogeneity at all scales of interest and lack of experimental control at very high depths. Intermediate scale physical model testing provides an attractive alternative to investigate these processes in the laboratory. Heterogeneities can be designed using soils with known properties in test tanks and the experiments can be conducted under controlled conditions to obtain accurate data. Conducting laboratory experiments under ambient pressure and temperature conditions to understand the processes that occur in deep formations poses many challenges. This research attempts to address such challenges and demonstrates how this testing approach could be used to generate useful data. The experiments involve the use of test systems of hierarchy of scales from small to intermediate scale tanks (~ 5 m) and long columns (~ 4.5 m). These experiments use surrogate fluids to investigate both capillary and solubility trapping in homogeneous and heterogeneous

  11. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with

  12. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071601 Yin Yanhong (Qingdao Institute of Marine Geology, Qingdao 266071, China); Sun Jiashi Discovery of Qingdao Iron Meteorite and Its Chemical Composition and Mineralogy (Marine Geology & Quaternary Geology, ISSN0256-1492, CN37-1117/P, 26(3), 2006, p.121-124, 3 illus., 2 tables, 9 refs.)Key words: iron meteorites, Shandong Province The Qingdao iron meteorite was found in May, 2004.

  13. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20070721 Dong Yaosong (National Key La-boratory of Geological Process and Mineral resources, Institute of Mathematical Geology and Remote Sensing, China University of Geosciences, Wuhan 430074, China); Yang Yanchen Mutual Compensation of Nerval Net and Characteristic Analysis in Mineral Resources Exploration (Mineral Resources and Geology, ISSN1001-5663, CN45-1174/TD, 20(1), 2006, p.1-6, 3 illus., 6 tables, 5 refs.) Key words: prospecting and exploration of mineral, neural network systems

  14. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072222 Cao Xiuding(Chengdu University of Technology,Chengdu 610059,China);Qin Guoqing General Packet Radio Service(GPRS)Technology and Its Application in Geological Hazard Monitoring(The Chinese Journal of Geological Hazard and Control,ISSN1003-8035,CN11-2852/P,17(1),2006,p.69-72,76,2 illus.,3 refs.)Key words:geologic hazards

  15. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>20122174 Bai Daoyuan ( Institute of Geological Survey of Hunan Province,Changsha 410011,China );Jia Baohua Neoproterozoic TectonicEvolution of the Xuefeng Orogenic Zone in Hunan Province ( Sedimentary Geology and Tethyan Geology,ISSN1009-3850,CN51-1593 / P,31 ( 3 ), 2011,p.78-87,2illus.,1 table,96refs. ) Key words:structural evolution,Neoproterozoic Era,Hunan Province This paper deals,on the basis of abundant lithogeochemical and geochronologic

  16. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20041748 Chen Liang (China University of Geosciences, Nanjing , Jiangsu); Meng Gao-tou Application of Information Model on Geological Hazards Investigating and Zoning of Counties and Cities: Taking Xianju County, Zhejiang Province as an Example (Hydroge-ology & Engineering Geology, ISSN 1000-3665, CN11-2202/P, 30(5), 2003, p. 49 - 52, 4 illus. , 2 tables, 6 refs. ) Key words: geologic hazards, information systems

  17. Geologic assessment of undiscovered oil and gas resources: Oligocene Frio and Anahuac Formations, United States Gulf of Mexico coastal plain and State waters

    Science.gov (United States)

    Swanson, Sharon M.; Karlsen, Alexander W.; Valentine, Brett J.

    2013-01-01

    The Oligocene Frio and Anahuac Formations were assessed as part of the 2007 U.S. Geological Survey (USGS) assessment of Tertiary strata of the U.S. Gulf of Mexico Basin onshore and State waters. The Frio Formation, which consists of sand-rich fluvio-deltaic systems, has been one of the largest hydrocarbon producers from the Paleogene in the Gulf of Mexico. The Anahuac Formation, an extensive transgressive marine shale overlying the Frio Formation, contains deltaic and slope sandstones in Louisiana and Texas and carbonate rocks in the eastern Gulf of Mexico. In downdip areas of the Frio and Anahuac Formations, traps associated with faulted, rollover anticlines are common. Structural traps commonly occur in combination with stratigraphic traps. Faulted salt domes in the Frio and Anahuac Formations are present in the Houston embayment of Texas and in south Louisiana. In the Frio Formation, stratigraphic traps are found in fluvial, deltaic, barrier-bar, shelf, and strandplain systems. The USGS Tertiary Assessment Team defined a single, Upper Jurassic-Cretaceous-Tertiary Composite Total Petroleum System (TPS) for the Gulf Coast basin, based on previous studies and geochemical analysis of oils in the Gulf Coast basin. The primary source rocks for oil and gas within Cenozoic petroleum systems, including Frio Formation reservoirs, in the northern, onshore Gulf Coastal region consist of coal and shale rich in organic matter within the Wilcox Group (Paleocene–Eocene), with some contributions from the Sparta Sand of the Claiborne Group (Eocene). The Jurassic Smackover Formation and Cretaceous Eagle Ford Formation also may have contributed substantial petroleum to Cenozoic reservoirs. Modeling studies of thermal maturity by the USGS Tertiary Assessment Team indicate that downdip portions of the basal Wilcox Group reached sufficient thermal maturity to generate hydrocarbons by early Eocene; this early maturation is the result of rapid sediment accumulation in the early

  18. Effects of silica redistribution on performance of high-level nuclear waste repositories in saturated geologic formations

    Energy Technology Data Exchange (ETDEWEB)

    Verma, A.; Pruess, K.

    1985-11-01

    Evaluation of the thermohydrological conditions near high-level waste packages is needed for the design of the waste canister and for overall repository design and performance assessment. Most available studies in this area have assumed that the hydrologic properties of the host rock do not change in response to the thermal, mechanical or chemical effects caused by waste emplacement. However, the ramifications of this simplifying assumption have not been substantiated. We have studied dissolution and precipitation of silica in thermally driven flow systems, including changes in formation porosity and permeability. Using numerical simulation, we compare predictions of thermohydrological conditions with and without inclusion of silica redistribution effects. Two cases were studied, namely, a canister-scale problem, a repository-wide thermal convection problem, and different pore models were employed for the permeable medium (fractures with uniform or non-uniform cross sections). We find that silica redistribution generally has insignificant effects on host rock and canister temperatures, pore pressures, or flow velocites.

  19. K?Ar dating and geological significance of clastic sediments of the Paleocene Sepultura Formation, Baja California, México

    Science.gov (United States)

    Téllez Duarte, Miguel Agustín.; López Martínez, Margarita

    2002-12-01

    At its type locality, the Paleocene Sepultura Formation consists of two members: a lower glauconitic-rich clastic section and an upper calcareous section. Three samples of authigenic glauconite pellets from two localities with good clastic sediment exposures were dated using K-Ar. At the type locality of Mesa La Sepultura, pellets from the middle of the clastic section yield a date of 60±1 Ma (weighted average of four experiments), and pellets from the top of the clastic unit give a date of 60±1 Ma (weighted average of two experiments). Pellets from the base of the section at La Mesa, 60 km distant, give a date of 59±1 Ma (one experiment). Dates obtained are in good agreement with those reported by biostratigraphy and confirm a Late Danian age. Our results differ from those reported elsewhere, in which low potassium content glauconites yield younger K-Ar ages than expected. An explanation for our observed agreement in ages could be related to the tectonic setting of forearc basins, where the low geothermal gradient prevents argon loss and reliable dates can be obtained.

  20. A general gridding, discretization, and coarsening methodology for modeling flow in porous formations with discrete geological features

    Science.gov (United States)

    Karimi-Fard, M.; Durlofsky, L. J.

    2016-10-01

    A comprehensive framework for modeling flow in porous media containing thin, discrete features, which could be high-permeability fractures or low-permeability deformation bands, is presented. The key steps of the methodology are mesh generation, fine-grid discretization, upscaling, and coarse-grid discretization. Our specialized gridding technique combines a set of intersecting triangulated surfaces by constructing approximate intersections using existing edges. This procedure creates a conforming mesh of all surfaces, which defines the internal boundaries for the volumetric mesh. The flow equations are discretized on this conforming fine mesh using an optimized two-point flux finite-volume approximation. The resulting discrete model is represented by a list of control-volumes with associated positions and pore-volumes, and a list of cell-to-cell connections with associated transmissibilities. Coarse models are then constructed by the aggregation of fine-grid cells, and the transmissibilities between adjacent coarse cells are obtained using flow-based upscaling procedures. Through appropriate computation of fracture-matrix transmissibilities, a dual-continuum representation is obtained on the coarse scale in regions with connected fracture networks. The fine and coarse discrete models generated within the framework are compatible with any connectivity-based simulator. The applicability of the methodology is illustrated for several two- and three-dimensional examples. In particular, we consider gas production from naturally fractured low-permeability formations, and transport through complex fracture networks. In all cases, highly accurate solutions are obtained with significant model reduction.

  1. Earthquake-induced soft-sediment deformation structures in the Mesoproterozoic Wumishan Formation,North China,and their geologic implications

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Soft-sediment structures are key to defining seismites. Two soft-sediment deformation horizons, bounded by undeformed carbonate strata, have been found in the Wumishan Formation in the Jumahe region, 175 km southwest of Beijing. One is in the lowest part of Wumishan Formation; and the other is in the uppermost part of Litho-member I. The soft-sediment structures in these two horizons fall into three categories: mould-and-sag structures, hydraulic shatterings and liquefaction dikes. The mould-and-sag structures are divided into two types: one developed in tidal-flat sediments, accompa-nied by many liquefaction-related structures and characterized by autochthonous post-earthquake sediments in sags, and the other type developed in deep-water environments, is not associated with liquefaction structures, and is overlain immediately by seismogenic tsunamites. The hydraulic shat-terings are composed of pockets of fluidization conglomerate, sand intrusions, and syndepositional faults. The liquefaction dikes fall into two categories: hydraulic-fracturing dikes and lateral-spreading dikes. The former are steep, planar, and pinch out upwards. The latter are snake-like and characterized by no diapir-related drag structures in surrounding rocks. Examination of the attitudes and strati-graphic positions of these structures suggests that these soft-sediment structures are seismogenic, and consequently, are seismites. Most seismites in the Wumishan Formation are developed near the former western, margin fault of Yanliao rift. This occurrence suggests that they could be related to movements on this fault. Other geological implications are discussed.

  2. Neoproterozoic Cana Brava chrysotile deposit (Goiás, Brazil): Geology and geochemistry of chrysotile vein formation

    Science.gov (United States)

    Biondi, João Carlos

    2014-01-01

    The Cana Brava chrysotile asbestos deposit of Goiás, Brazil, contains approximately 150 Mt of ore with an average of 3.5 wt.% of cross-fiber chrysotile and lies in the differentiated, mafic-ultramafic Neoproterozoic Cana Brava complex. This complex was formed at approximately 0.79 Ga and metamorphosed at 0.77 to 0.76 and 0.63 Ga. The 0.77 to 0.76 Ga metamorphic event was a high-grade one that transformed the mafic and ultramafic rocks into meta-peridotites and meta-pyroxenites. The low-grade 0.63 Ga metamorphism allowed the formation of black, red and brown serpentinite, graphitic, magnesite-rich talc serpentinite, and rodingite, which became folded and foliated. At the end of the 0.63 Ga metamorphism, black serpentinites were oxidized to form red serpentinites, the main type of serpentinite that outcrops today at the Cana Brava mineralized region. Post-metamorphic fluids reactivated the process of serpentinization, thereby generating massive green serpentinite from the red. Green formed on the most fractured zones, and double red and green reaction rims formed on the sides of the veins located outside the green serpentinite zones. This process did not cause significant variation in the volume of the rocks and resulted in a strongly reducing system thanks to the loss of Fe2O3 and iron and the subsequent crystallization of magnetite within veinlets and altered rocks. Low angle shear, developed under brittle conditions, caused hydraulic fracturing and the generation of oversaturated, oxidizing fluids that crystallized the cross-fiber chrysotile inside open fractures. Very densely fractured zones with fractures filled with cross-fiber chrysotile constitute the ore that is mined at present.

  3. Pedological Heterogeneity of Soils Developed from Lithologies of the Pirambóia, Sanga-do-Cabral, and Guará Geological Formations in Southern Brazil

    Directory of Open Access Journals (Sweden)

    Pablo Grahl dos Santos

    Full Text Available ABSTRACT The source material is one of the factors that most influence soil genesis and the mainly responsible for the nature, composition, and behavior of the soil. Given the geological complexity of the Santa Maria River basin, the objective of this study was to investigate whether the new lithologies described recently may be responsible for a greater variation in soil properties, as well as in the soil taxonomy itself. The study area is located in the municipality of Rosário do Sul, RS, Brazil at 30° 15’ 28” S and 54° 54’ 50” W, with average altitude of 132 m and climate type Cfa. This study was supported by a cartographic base composed of topographic charts, geological maps, satellite images, digital elevation models, and maps of geomorphometric variables, with the support of GPS receivers and GIS. Topolithosequences were defined from soils developed from the Pirambóia, Sanga-do-Cabral, and Guará Formations, and soil profiles were chosen based on types of source materials, variations in relief, and altitude. A classical model of slope compartmentalization was applied for correlation of the geomorphic surfaces with pedogenesis. Soil profiles were described in a general and morphological manner, and soil samples were collected for analysis. The physical and chemical properties determined were particle size, active and potential acidity, organic C content, Ca2+, Mg2+, K+, and Al3+. The sum of bases, CEC, flocculation activity and degree of flocculation of the clay fraction, and base (V, aluminum (m, and sodium saturation were calculated. Soil properties were evaluated through factor analysis and grouping, which allowed profiles to be grouped based on their variables and identification of which variables were preponderant in distinguishing them. Furthermore, multivariate analysis allowed statistical differentiation of the profiles in the same lithostratigraphic unit and in different relief positions, and also differentiation of

  4. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131683 Lin Wenjing(Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang050061,China);Liu Zhiming An Estimation of HDR Resources in China’s Mainland(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,33(5),2012,p.807-811,2illus.,2tables,14refs.)

  5. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131088 Fan Difu (Geological Survey of Jiangsu Province , Nanjing 210018 , China ); Xu Xueqiu Origin Study of Geothermal Field in Xiaoyangkou of Rudong County in Jiangsu (Journal of Geology , ISSN1674-3636 , CN32-1796/P , 36 (2), 2012 , p.192-197 , 3illus. , 9refs.) Key words : geothermal fields , Jiangsu Province

  6. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20081086 Feng Wujun(Geological Research Institute,Jiangsu Oil Field Branch Company,Yangzhou 225012,Jiangsu);Cao Bing Geoheat Resources Evaluation and Target Optimization in Gaoyou Region of Jiangsu Province(Jiangsu Geology,ISSN1003-6474,CN32-1258/P,31(2),2007,p.130-13

  7. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    <正>20050726 Cheng Jiabai (Survey Team of Huabei Geological Exploration Bureau, Sanhe 065201, China); Zhao Yuanyi Prospecting Hypothesis and Verification (Contributions to Geology and Mineral Resources Research, ISSN 1001-1412, CN12-1131/P, 19(2), 2004, p. 122-129, 2 refs. , with English abstract) Key words: prospecting model

  8. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131925 Chen Ning(State Key Laboratory of Geological Hazards Prevention,Chengdu University of Technology,Chengdu 610059,China);Wang Yunsheng Features and Chains Genesis Analysis of Earthquake Geo-Hazards in Yuzi Stream of Wenchuan County(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,20(3),2012,p.340-349,4

  9. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131382 Chen Tao(Key Laboratory of Active Tectonics and Volcano,Institute of Geology,China Earthquake Administration,Beijing 100029,China);Liu Yugang The Activity Age of Tarwan Fault and Genesis of the Topographic Scarp(Seismology and Geology,ISSN0253-4967,CN11-2192/P,34(3),

  10. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20090651 Chen Boyang(Fujian Institute of Geological Survey and Research,Fuzhou 350011,China) Bio-Geochemical Characteristics of High and Low-Incidence Area of Stomach Cancer in the Coastal Area of Fujian Province(Geology of Fujian,ISSN1001-3970,CN35-1080/P,27(1),2008,p.29-36,3 tables,6 refs.)

  11. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20040862 Chen Zhihua (Faculty of Engineering, China University of Geosciences, Wuhan, Hubei); Guan Xuefeng Development of DBMS for Environmental Geologic Hazards on WebGIS (Hydrogeology & Engineering Geology, ISSN1000-3665, CN11-2202/P, 30(2), 2003, p. 20-24, 3 illus. , 9 refs. )

  12. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20040834 Chen Yijiu (Geological Exploration Bureau of Guangdong Province, Guangzhou, Guangdong) Discussion on Natural Chornic Irradiation Environment and Pertinent Problems in Guangdong Province, China (Guangdong Geology, ISSN 1001 - 8670, CN44-1201/P, 18(1), 2003, p. 30-41, 7 tables, 1 ref. , with English abstract) Keywords: radioactivity radiation environmental pollution Guangdong Province

  13. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131358 Li Jianzhong (State Key Laboratory of Geological Processes and Mineral Resources , School of Earth Sciences and Resources , China University of Geosciences , Beijing 100083 , China); Cui Jing Geological Application of Mult-Idimensional Data Visualization Based on Geometric Coordinate Method (Earth Science Frontiers

  14. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20142114Lin Quansheng(China University of Geosciences,Bejing 100083,China)On the Geologic Characteristics and Economic Significance of the Cambrian Lintian Group in Fujian Province(Geology of Fujian,ISSN1001-3970,CN35-1080/P,32(4),2013,p.264-273,2illus.,2tables,6refs.)

  15. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140227Li Wenyuan(Xi’an Center of Geological Survey,CGS,Xi’an 710054,ChinaThe Continental Growth and Ore-Forming Processes(Northwestern Geology,ISSN1009-6248,CN61-1149/P,46(1),2013,p.1-10,5illus.,18refs.)

  16. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20041944 Chen Yuchuan (Chinese Academy of Geological Sciences, Beijing) ; Xue Chunli Discussion on the Regional Mineralizing Pedigree of the Ore Deposits in the Northern Margin of the North China Landmass (Geological Journal of China Universities, ISSN 1006-7493, CN32-1440/P, 9(4), 2003, p. 520-535, 2 illus. , 3 tables, 43 refs. ,

  17. Preliminary integrated geologic map data for Alaska

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — A GIS database of geologic units and structural features in Alaska, with lithology, age, data structure, and format written and arranged just like the other states.

  18. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111337 Chen Guoxu(Faculty of Earth Resources,China University of Geosciences,Wuhan 430074,China);Wu Chonglong Study on Integration of 3D Geological Modeling and Mineral Resource Exploration Mapping(Geology and Prospecting,ISSN0495-5331,CN11-2043/P,46(3),2010,p.542-546,5 illus.,19 refs.)Key words:geological modeling,digital cartography According to the workflow of traditional methods of mineral reserve estimation,the authors took mine 3D geological modeling and mineral reserve estimation mapping as a starting point to explore a new method for the integration of 3D geological modeling and mineral resource exploration mapping.In order to verify this method,the authors have applied this method to some real mines.The results show that this method can effectively solve those problems of

  19. CO{sub 2} Sequestration Capacity and Associated Aspects of the Most Promising Geologic Formations in the Rocky Mountain Region: Local-Scale Analyses

    Energy Technology Data Exchange (ETDEWEB)

    Laes, Denise; Eisinger, Chris; Morgan, Craig; Rauzi, Steve; Scholle, Dana; Scott, Phyllis; Lee, Si-Yong; Zaluski, Wade; Esser, Richard; Matthews, Vince; McPherson, Brian

    2013-07-30

    The purpose of this report is to provide a summary of individual local-­scale CCS site characterization studies conducted in Colorado, New Mexico and Utah. These site-­ specific characterization analyses were performed as part of the “Characterization of Most Promising Sequestration Formations in the Rocky Mountain Region” (RMCCS) project. The primary objective of these local-­scale analyses is to provide a basis for regional-­scale characterization efforts within each state. Specifically, limits on time and funding will typically inhibit CCS projects from conducting high-­ resolution characterization of a state-­sized region, but smaller (< 10,000 km{sup 2}) site analyses are usually possible, and such can provide insight regarding limiting factors for the regional-­scale geology. For the RMCCS project, the outcomes of these local-­scale studies provide a starting point for future local-­scale site characterization efforts in the Rocky Mountain region.

  20. Sound velocity profiles (SVPs) in CSV format and PNG image format collected by the U.S. Geological Survey in the nearshore surrounding the Elizabeth Islands and sand shoals of Vineyard Sound, MA, 2007, 2009, and 2011

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  1. Analysis of the Formation Conditions of Geological Disaster in Hantai, Hanzhong, Shaanxi%陕西省汉中市汉台区地质灾害形成条件分析

    Institute of Scientific and Technical Information of China (English)

    向茂西; 李永红; 贺卫中; 刘海南; 姬怡微

    2014-01-01

    本文是在充分研究地质灾害形成条件,以遥感解译、地面调查和勘查测绘为工作手段,完成的汉台区地质灾害详细调查工作的基础上实现的。通过分析地形地貌、地质构造、地层岩性、岩土体类型、降水、地表水、地下水、人类工程活动、地震等形成条件与地质灾害的关系,认为汉台区地质灾害是各种形成条件综合作用的结果,每类地质灾害形成或发生,其主导条件不尽相同。因此,研究地质灾害的形成条件,对于分析地质灾害的成因和机制,掌握其发育规律以及减灾、防灾十分必要。%This article is achieved in the full study on geological hazards forming conditions, by remote sensing interpretation, ground investigation, exploring and surveying, on the basis of detailed investigations of geological hazards in Hantai which is completed. By analyzing the relationship between geological disasters and formation conditions of topography, geological structure, lithology, soil and rock type, precipitation, surface water, groundwater, human engineering activities, earthquakes. Thinking geological hazard in Haitan is a result of the combined effects of the formation conditions. The formation or occurrence of each type geological hazards, the dominant condition is different. Therefore, the study on formation of geological hazards is necessary for analyses the causes and mechanism of geologic hazards, controls their development, disaster mitigation and disaster preparedness.

  2. ECONOMIC GEOLOGY (5)GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20082442 Han Zaisheng(China Geological Servey,Beijing 100011,China);Ran Weiyan Exploration and Evaluation of Shal- low Geothermal Energy(Geology in China, ISSN1000—3657,CN11—1167/P,34(6), 2007,p.1115—1121,6 refs.,with English abstract) Key words:geothermal exploration, geothermal resources

  3. HISTORICAL GEOLOGY&STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20161152Bai Jianke(Xi’an Center of China Geological Survey,Xi’an 710054,China);Li Zhipei Tectonic Environment of Western Tianshan during the Early Carboniferous:Sedimentary and Stratigraphical Evidence from the Bottom of the Dahalajunshan Formation(Acta Sedimentologica Sinica,ISSN1000-0550,

  4. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111836 Gao Jian(Sichuan Institute of Geological Survey for Nuclear Industry,Chengdu 610061,China);Shi Yuzhen Feasibility Study of Exploitation of Geothermal Resource in the Lugu Lake Region,Yanyuan,Sichuan Province(Acta Geologica Sichuan,ISSN1006-0995,CN51-1273/P,30(3),2010,p.291-294,1 illus.,1 table,1 ref.,with English abstract)Key words:geothermal water,Sichuan Province20111837 He Jianhua(Geological Brigade 102,Bureau of Geolog

  5. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072338 Bai Long(Guizhou Academy of Geology Survey,Guiyang,Guizhou 550005,China);Zhang Zhen Treatment of Discovery on Ductile Shear Belts in Yiwu,Xingjiang Province and Its Ore-Forming Geology Process(Guizhou Geology,ISSN1000-5943,CN52-1059/P,23(4),2006,p.286-291,295,3 illus.,9 refs.)Key words:ductile shear zones,metallogenesis,XinjiangOf ductile shear belts,deformation fabric considerably developed in Yiwu,

  6. Formation, Evolution and Geological Significance of the Heilongjiang Complex Zone%黑龙江杂岩带的形成演化及地质意义

    Institute of Scientific and Technical Information of China (English)

    孔凡梅; 李旭平; 李守军; 金爱文

    2011-01-01

    黑龙江杂岩带呈南北向带状展布于佳木斯地块西缘,出露于嘉荫—牡丹江缝合带以东.研究证明其主体形成时代为晚海西期到印支期,地球化学特征显示其极可能形成于佳木斯与松嫩地块(松花江—嫩江地块)间板块俯冲碰撞或陆间洋盆消失闭合的环境.综合佳木斯地块同位素研究成果,结合该区古生物的研究和地质特点,推演出依兰地区黑龙江杂岩的形成演化模式,绘制出晚石炭世—早二叠世东北地区的岩相古地理简图.认为从晚石炭世末期开始,佳木斯地块西缘的洋壳北东向俯冲,佳木斯地块与松嫩地块沿嘉荫—牡丹江缝合带碰撞拼合,可能是在古亚洲洋南支向西伯利亚板块俯冲的大地构造背景下发生的.%The Heilongjiang complex zone like a belt from south to north, which is on the western margin of the Jiamusi massif, exposed to the east of Jiayin-Mudanjiang suture zone. Studies indicate that the Heilongjiang complex zone is mainly formed from the Late Hercynian to Indosinian. Geochemical characteristics suggest a geological background of the oceanic crust subduction and collision of the Jiamusi Massif and the Songnen Block (Songhua River-Nenjiang River Block). Combined with isotope study, paleontological research and geological background of the Jiamusi Massif, this study sums up a formation and evolution model of the Heilongjiang complex, and develops a lithofacies palaeogeography diagram of Late Carboniferous to Early Permian in the Northeast China. This study also concludes that oceanic crust on western margin of the Jiamusi massif subducted NE direction from the Late Carboniferous, while the Jiamusi and Songnen blocks collided along the Jiayin-Mudanjiang suture zone, probably occurred during subduction of the south branch of the Paleo-Asian Ocean into the Siberian plate.

  7. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20101802 Fang Bin (China University of Geosciences,Beijing 100083,China);Yang Yunjun Characteristics and Resource Evaluation of the Jiwa Geothermal Field in Central Qiangtang,Northern Tibet,China (Geological Bulletin of China,ISSN1671-

  8. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112453 Li Qing (First Design and Research Institute,Ministry of Mechanical Industry, Bengbu 233000, China); Li Yixiang Application of Shallow Geothermal Energy Resources in the Hefei Area(Geology

  9. Marine geology

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, V.P.; Shankar, R.

    Significant scientific contributions in Marine Geology in India during the Nineties have been highlighted in this paper. Sediment trap data collected in the Arabian Sea and Bay of Bengal have provided much understanding about annual sediment fluxes...

  10. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112745Cheng Shurang(Geological survey of Shanxi Province,Xi’an 710065,China); Zhang Lin Grade Evaluation Based on Fuzzy Clustering and Pattern Recognition of Comprehensive Anomalies of Geophysics and

  11. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20101648 Peng Yujing (Survey of Regional Geology and Mineral Resources of Jilin Province, Changchun 130022, China); Zhai Yuchun Age Determination and Characteristics of the Late Indosinian-Yanshanian Metallogenetic Events of Jilin Province

  12. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112330 Liu Xifang (Key Laboratory of Saline Lake Resources and Environment, Ministry of Land and Resources,Institute of Mineral Resources, Beijing 100037, China);Zheng Mianping Geological Features

  13. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20102475 Chen Shiliang(No.4 Geological Party of Fujian Province,Ningde 352100,China)A Brief Analysis on Geothermy in the Nantai Isle of Fuzhou Municipality,Fujian Province(Geology of Fujian,ISSN1001-3970,CN35-1080/P,28(4),2009,p.310-314,1 illus.,1 table,3 refs.)Key words:geothermal exploration,Fujian ProvinceBased on the geochemistry and geophysical

  14. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>20122531 Hu Lingzhi ( Institute of Geological Engineering Design & Research of Beijing,Miyun 101500,China );Wang Jiankang Discussion on the Feasibility of Geothermal Resources Development and Utilization in Miyun District,Beijing ( City Geology,ISSN1007-1903,CN11-5519 / P,6 ( 3 ), 2011,p.34-35,59 ,) Key words:geothermal resources,Beijing Geothermal,as a new type of clean energy with the integrated trinity of " heat energy-mineral resource-water resource ",

  15. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20132568 Du Guilin(Seismological Bureau of Weihai City,Weihai 264200,China);Cao Wenhai Genesis of Baoquantang Hot Spring in Weihai and Its Influence on Faulting and Seismic Activities(Marine Geology&Quaternary Geology,ISSN0256-1492,CN37-1117/P,32(5),2012,p.67-72,3illus.,2tables,18refs.)Key words:hot springs,seismicity,Shandong Province

  16. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072933 Bie Jun(Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Huang Haijun Ground Subsidence of the Modern Yellow River Delta and Its Causes(Marine Geology & Quaternary Geology,ISSN0256-1492,CN37-1117/P,28(4),2006,p.29-35,5 illus.,13 refs.,with English abstract)Key words:land subsidence,Yellow River Delta

  17. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141269 Dai Deqiu(Institute of Geology,Hunan University of Science and Technology,Xiangtan 411201,China);Chen Xinyue Contrastive of Petrography and Mineral Chemistry Characteristics among Olivine and Ca,Al-rich Assemblages(Chinese Journal of Geology,ISSN0563-5020,CN11-1937/P,48(3),2013,p.762-772,3 illus.,2 tables,25 refs.)

  18. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141810 Bian Yumei(Geological Environmental Monitoring Center of Liaoning Province,Shenyang 110032,China);Zhang Jing Zoning Haicheng,Liaoning Province,by GeoHazard Risk and Geo-Hazard Assessment(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(3),2013,p.5-9,2 illus.,tables,refs.)

  19. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140001Dong Shuwen(Chinese Academy of Geological Sciences,Beijing 100037,China);Li Tingdong Progress of SinoProbe-Deep Exploration in China 2008~2012(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(1),2013,p.7-23,8illus.,69refs.)Key words:deep geology,deep seismic sounding,Continental Scientific Drilling,China SinoProbe 2008~2012,the initial phase

  20. Geology, summary

    Science.gov (United States)

    Sabins, F. F., Jr.

    1975-01-01

    Trends in geologic application of remote sensing are identified. These trends are as follows: (1) increased applications of orbital imagery in fields such as engineering and environmental geology - some specific applications include recognition of active earthquake faults, site location for nuclear powerplants, and recognition of landslide hazards; (2) utilization of remote sensing by industry, especially oil and gas companies, and (3) application of digital image processing to mineral exploration.

  1. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072288 Hong Quan(Ningbo Institute for Engineering Investigation,Ningbo 315012,China)Design of Information Management System for Engineering Investigation Maps Based on C/S Model(The Chinese Journal of Geological Hazard and Control,ISSN1003-8035,CN11-2852/P,17(1),2006,p.86-90,2 illus.,6 refs.)Key words:information systems,engineering geological map

  2. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141283 Bai Daoyuan(Hunan Institute of Geological Survey,Changsha 410016,China);Zhong Xiang Nature,Origin and Tectonic Setting of Jinzhou Basin in the South Segment of Xuefeng Orogen(Geology in China,ISSN1000-3657,CN11-1167/P,40(4),2013,p.1079-1091,10 illus.,47 refs.)Key words:foreland basins,strike-slip faults,Hunan Province

  3. COAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091159 Gao Yan(No.3 Prospecting Team of Anhui Bureau of Coal Geology,Suzhou 234000,China) Effect of Depositional Environment of Coal-Bearing Stratum on Major Coal Seams in Suntan Coalmine,Anhui Province(Geology of Anhui,ISSN 1005- 6157,CN34-1111/P,18(2),2008,p.114 -117,5 illus.,1 ref.,with English abstract)

  4. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110164 Dong Lianhui(Xinjiang Bureau of Geology and Mineral Resources and Development,Urumqi 830000,China);Feng Jing Research for Classification of Metallogenic Unit of Xinjiang(Xinjiang Geology,ISSN1000-8845,CN65-1092/P,28(1),2010,p.1-15,1 illus.,1 table,17 refs.,with English abstract)Key words:metallogenic provinces,metallogenic belts,metallogenic area,Xinjiang

  5. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072528 Chen Yuchuan(Chinese Academy of Geological Sciences,Beijing,100037);Pei Rongfu On Minerogenetic(Metallogenetic)Series:Third Discussion(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,80(10),2006,p.1501-1508,3illus.,1 table,57 refs.,with English abstract)Key words:metallogenic series20072529 Pei Rongfu(Institute of Mineral Resources,CAGS,Beijing 100037);Mei Yanxiong Event Geology Stimulati

  6. Separation and capture of CO2 from large stationary sources and sequestration in geological formations--coalbeds and deep saline aquifers.

    Science.gov (United States)

    White, Curt M; Strazisar, Brian R; Granite, Evan J; Hoffman, James S; Pennline, Henry W

    2003-06-01

    The topic of global warming as a result of increased atmospheric CO2 concentration is arguably the most important environmental issue that the world faces today. It is a global problem that will need to be solved on a global level. The link between anthropogenic emissions of CO2 with increased atmospheric CO2 levels and, in turn, with increased global temperatures has been well established and accepted by the world. International organizations such as the United Nations Framework Convention on Climate Change (UNFCCC) and the Intergovernmental Panel on Climate Change (IPCC) have been formed to address this issue. Three options are being explored to stabilize atmospheric levels of greenhouse gases (GHGs) and global temperatures without severely and negatively impacting standard of living: (1) increasing energy efficiency, (2) switching to less carbon-intensive sources of energy, and (3) carbon sequestration. To be successful, all three options must be used in concert. The third option is the subject of this review. Specifically, this review will cover the capture and geologic sequestration of CO2 generated from large point sources, namely fossil-fuel-fired power gasification plants. Sequestration of CO2 in geological formations is necessary to meet the President's Global Climate Change Initiative target of an 18% reduction in GHG intensity by 2012. Further, the best strategy to stabilize the atmospheric concentration of CO2 results from a multifaceted approach where sequestration of CO2 into geological formations is combined with increased efficiency in electric power generation and utilization, increased conservation, increased use of lower carbon-intensity fuels, and increased use of nuclear energy and renewables. This review covers the separation and capture of CO2 from both flue gas and fuel gas using wet scrubbing technologies, dry regenerable sorbents, membranes, cryogenics, pressure and temperature swing adsorption, and other advanced concepts. Existing

  7. ECONOMIC GEOLOGY (3)PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20082333 Bai Guoping(Key Laboratory for Hydrocarbon Accumulation of Education Ministry,China University of Petroleum, Beijing 102249,China);Yin Jinyin Petroleum Geological Features and Explo- ration Potential Analyses of North Carnavon Basin,Australia(Petroleum Geology & Ex- periment,ISSN1001—6112,CN32—1151/ TE,29(3),2007,p.253—258,4 illus.,1 table,12 refs.)

  8. Destination: Geology?

    Science.gov (United States)

    Price, Louise

    2016-04-01

    "While we teach, we learn" (Roman philosopher Seneca) One of the most beneficial ways to remember a theory or concept is to explain it to someone else. The offer of fieldwork and visits to exciting destinations is arguably the easiest way to spark a students' interest in any subject. Geology at A-Level (age 16-18) in the United Kingdom incorporates significant elements of field studies into the curriculum with many students choosing the subject on this basis and it being a key factor in consolidating student knowledge and understanding. Geology maintains a healthy annual enrollment with interest in the subject increasing in recent years. However, it is important for educators not to loose sight of the importance of recruitment and retention of students. Recent flexibility in the subject content of the UK curriculum in secondary schools has provided an opportunity to teach the basic principles of the subject to our younger students and fieldwork provides a valuable opportunity to engage with these students in the promotion of the subject. Promotion of the subject is typically devolved to senior students at Hessle High School and Sixth Form College, drawing on their personal experiences to engage younger students. Prospective students are excited to learn from a guest speaker, so why not use our most senior students to engage and promote the subject rather than their normal subject teacher? A-Level geology students embarking on fieldwork abroad, understand their additional responsibility to promote the subject and share their understanding of the field visit. They will typically produce a series of lessons and activities for younger students using their newly acquired knowledge. Senior students also present to whole year groups in seminars, sharing knowledge of the location's geology and raising awareness of the exciting destinations offered by geology. Geology fieldwork is always planned, organised and led by the member of staff to keep costs low, with recent visits

  9. Development Characteristics and Formation Conditions of Geological Hazards in Longde County of Ningxia%宁夏隆德县地质灾害发育特征及形成条件分析

    Institute of Scientific and Technical Information of China (English)

    吕世民; 吴凯; 杜光波; 李焕焕

    2015-01-01

    隆德县地质环境条件复杂,是宁夏地质灾害的易发区。基于宁夏隆德县1∶5万地质灾害详细调查,从定性和定量两个方面分析了隆德县地质灾害发育类型、发育特征、分布规律及形成条件。隆德县发育的地质灾害主要有滑坡、崩塌、泥石流和不稳定斜坡,其中滑坡59处、崩塌59处、泥石流17处、不稳定斜坡170处。经分析,确立了地形地貌、地层岩性、降雨及人类工程活动等因素与地质灾害发育特征、分布规律及形成条件之间的关系,为隆德县建立地质灾害信息数据库和编制地质灾害防治规划提供依据。%The geological conditions of Longde county are complicated ,which makes this place susceptible to geological disasters .Based on the detailed investigation of geological disasters of Longde county ,the types ,development features , distribution and formation conditions of geological disasters were analyzed from the qualitative and quantitative aspects . Results indicate that the main geological hazards in Longde county are mainly landslides ,collapses ,debris flows and un-stable slopes ,including 59 landslides ,59 collapses ,17 debris flows and 170 unstable slopes .According to our analysis , the relationship between the factors of landform ,soil type ,rainfall and human engineering activities and the development features ,distribution and formation conditions of the geological disasters is determined .This study can provide a strong support for the establishment of geological hazard information database and compilation of geological hazard prevention and administration plan .

  10. JPEG Images of chirp subbottom profiler data collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire in 2005 (JPEG Image Format)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In freshwater bodies of New Hampshire, the most problematic aquatic invasive plant species is Myriophyllum heterophyllum or variable leaf water-milfoil. Once...

  11. SEABOSS Images from Block Island Sound Collected During U.S. Geological Survey (USGS) Cruise 2011-006-FA in JPEG Format

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The USGS, in cooperation with NOAA, is producing detailed maps of the seafloor off southern New England. The current phase of this cooperative research program is...

  12. SEABOSS Images from Block Island Sound Collected During U.S. Geological Survey (USGS) Cruise 2011-006-FA in JPEG Format

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The USGS, in cooperation with NOAA, is producing detailed maps of the seafloor off southern New England. The current phase of this cooperative research program is...

  13. JPEG Images of chirp subbottom profiler data collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire in 2005 (JPEG Image Format)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In freshwater bodies of New Hampshire, the most problematic aquatic invasive plant species is Myriophyllum heterophyllum or variable leaf water-milfoil. Once...

  14. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20150599Chen Gang(Nanjing Center,China Geological Survey,Nanjing 210016,China);Yao Zhongyou Mineral Database Construction and Analysis of Oceania Region(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,33(2),2014,p.164-171,13illus.,6refs.)Key words:mineral localities,data bases Based on the database of the standards,construction process,data quality control measures and methods and processes,the authors constructed the databases of Fe,Mn,Cu,Al,Au,Ni,U and REE mineral resources for Oceanian region.Through a comprehensive analysis of the multi-source data information of geology and mineral resources,

  15. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110907 Luo Xue(Faculty of Earth Resource,China Unversity of Geosciences,Wuhan 430074,China);Cao Xinzhi Review on the Change and Development of the Research Thoughts about Mineral Deposit Geology(Contributions to Geology and Mineral Resources Research,ISSN1001-1412,CN12-1131/P,25(2),2010,p.147-152,40 refs.)Key words:study of mineral deposit The development and breakthrough of mineral deposit geology depends to a great extent on the progress and change of its research thoughts.From the traditional study of single mineral,single deposit and single metallogenic model to the comprehensive discussion and whole understanding of metallogenic

  16. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20102152 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410011,China);Zhou Kejun Study on Quaternary Tectonic-Sedimentary Evolution of Lujiao Area,East Edge of Yuanjiang Sag,Dongting Basin(Journal of Geomechanics,ISSN1006-6616,CN11-3672/P,15(4),2009,p.409-420,7 illus.,1 table,23 refs.)Key words:basins,Dongtinghu BasinQuaternary Yuanjiang sag is an eastern one of the secondary tectonic units of the Dongting Basin.Detailed geologic mapping and bore data were taken to reveal the Quaternary tectonic,sedimentary and

  17. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20150342Guan Yu(Geo-Environment Monitoring Station of Anhui Province,Hefei230001,China);Chen Xun On Shallow Geothermal Energy Investigation in Urban Planning Zone of Bengbu in Anhui Province(Journal of Geology,ISSN1674-3636,CN32-1796/P,38(1),2014,p.88-93,2illus.,4tables,6refs.)Key words:geothermal energy,Anhui Province The authors conducted studies on shallow geothermal energy in urban planning zone in Bengbu of Anhui Province,depicted the geological settings of shallow geothermal energy,analyzed the natural features,heat exchange

  18. ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140498An Shize(Sichuan Institute of Geological Engineering Investigation,Chengdu610072,China);Liu Zongxiang On the Failure Mechanism of a Bedding Landslide in Northeast Sichuan(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(1),2013,p.14-19,2illus.,9refs.)Key words:bedding faults,landslides The landslide was caused by excavation engineering.The failure mechanism is explored for slopes with soft interlayer in the red

  19. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140332 Jiang Lin(School of Earth and Space Sciences,Peking University,Beijing100871,China);Ji Jianqing Geologic Analysis on the Prospects of the Enhanced Geothermal System(EGS)in the Bohaiwan Basin(Geology and Prospecting,ISSN0495-5331,CN11-2043/P,49(1),2013,p.167-178,5illus.,4tables,41refs.)Key words:geothermal systems,Bohaiwan Basin Great amounts of thermal energy is stored ubiquitously in rocks with high tempera-

  20. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20102127 S.L.Shvartsev(Tomsk Department,Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of the RAS)Self-Organizing Abiogenic Dissipative Structures in the Geologic History of the Earth(Earth Science Frontiers,ISSN1005-2321,CN11-3370/P,16(6),2009,p.257-275,3 illus.,4 tables,53 refs.)Key words:abiogenic,water-rock interaction,dissipative structureIt is shown that since the appearance of water on the Earth,a stationary disequilibrium-equilibrium

  1. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110635 Bai Jinbin(Tianjin Institute of Geological Survey,Yingshui Road 20,Nankai 300191,China),Niu Xiujun Cenozoic Consolidation Characteristics and Land Subsidence in Tianjin(The Chinese Journal of Geological Hazard and Control,ISSN1003-8035,CN11-2825/P,21(1),2010,p.42-46,4 illus.,4 tables,7 refs.)Key words:consolidation,land subsidence,TianjinAccording to the survey data of oil wells in Dagang oilfield and a lot of laboratory data,the paper discussed the relationship between the consolidation characteristics

  2. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110686 Bai Wancheng(Gold Headquarters of the Chinese Armed Police Force,Beijing 100055,China);Dong Jianle Statistic Prediction for Gold Ore Prospecting in China(Contributions to Geology and Mineral Resources Research,ISSN1001-1412,CN12-1131/P,25(1),2010,p.1-4,11,1 illus,1 table,7 refs.,with English abstract)Key words:metallogenic prediction,gold ores,China 20110687 Dong Min(Institute of Geology and Exploration Engineering,Xinjiang University,Urumqi 830046,China);Sun Baosheng Drawing and S

  3. Input-form data for the U.S. Geological Survey assessment of the Devonian and Mississippian Bakken and Devonian Three Forks Formations of the U.S. Williston Basin Province, 2013

    Science.gov (United States)

    ,; Gaswirth, Stephanie B.; Marra, Kristen R.; Cook, Troy A.; Charpentier, Ronald R.; Gautier, Donald L.; Higley, Debra K.; Klett, Timothy R.; Lewan, Michael D.; Lillis, Paul G.; Schenk, Christopher J.; Tennyson, Marilyn E.; Whidden, Katherine J.

    2013-01-01

    In 2013, the U.S. Geological Survey assessed the technically recoverable oil and gas resources of the Bakken and Three Forks Formations of the U.S. portion of the Williston Basin. The Bakken and Three Forks Formations were assessed as continuous and hypothetical conventional oil accumulations using a methodology similar to that used in the assessment of other continuous- and conventional-type assessment units throughout the United States. The purpose of this report is to provide supplemental documentation and information used in the Bakken-Three Forks assessment.

  4. Theoretical geology

    Science.gov (United States)

    Mikeš, Daniel

    2010-05-01

    Theoretical geology Present day geology is mostly empirical of nature. I claim that geology is by nature complex and that the empirical approach is bound to fail. Let's consider the input to be the set of ambient conditions and the output to be the sedimentary rock record. I claim that the output can only be deduced from the input if the relation from input to output be known. The fundamental question is therefore the following: Can one predict the output from the input or can one predict the behaviour of a sedimentary system? If one can, than the empirical/deductive method has changes, if one can't than that method is bound to fail. The fundamental problem to solve is therefore the following: How to predict the behaviour of a sedimentary system? It is interesting to observe that this question is never asked and many a study is conducted by the empirical/deductive method; it seems that the empirical method has been accepted as being appropriate without question. It is, however, easy to argument that a sedimentary system is by nature complex and that several input parameters vary at the same time and that they can create similar output in the rock record. It follows trivially from these first principles that in such a case the deductive solution cannot be unique. At the same time several geological methods depart precisely from the assumption, that one particular variable is the dictator/driver and that the others are constant, even though the data do not support such an assumption. The method of "sequence stratigraphy" is a typical example of such a dogma. It can be easily argued that all the interpretation resulting from a method that is built on uncertain or wrong assumptions is erroneous. Still, this method has survived for many years, nonwithstanding all the critics it has received. This is just one example of the present day geological world and is not unique. Even the alternative methods criticising sequence stratigraphy actually depart from the same

  5. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091163 Jiang Huichao(Tongji University College of Ocean and Earth Science,Shanghai 200092,China);Xiao Yongjun Analysis of Cenozoic Subsurface Temperatures of the Jiyang Depression,Shandong Province(Geology in China,ISSN1000-3657,CN11- 1167/P,35(2),2008,p.273-278,3 illus.,2 tables,15 refs.)

  6. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151090 Bian Huiying(School of Environmental Sciences and Engineering,Chang’an University,Xi’an 10054,China);Wang Shuangming Hydrodynamic Conditions of Geothermal Water in Gushi Depression of Guanzhong Basin(Coal Geology&Exploration;,ISSN1001-1986,CN61-1155/P,42(3),2014,p.50-54,60,9illus.,11refs.,

  7. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20042333 Chen Cuibai (School of Water Resources and Environment, China University of Geosciences, Beijing); Yang Qi The Laboratory Study of Biodegradation and Adsorption and Desorption of Trichloroethylene to Mixed Bacteria (Hydrogeology & Engineering Geology, ISSN1000 - 3665, CN11-2202/P, 31(1), 2004, p. 47-51, 6 illus. , 4 tables, 14 refs. )

  8. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20090720 Wang Haiqiao(Institute of Earth Resources and Information,China University of Petroleum(East China),Dongying 257061,China);Zhong Jianhua Theory of Geological Holography(Earth Science Frontiers, ISSN1005-2321,CN11-3370/P,15 (3),2008,p.370-379,8 illus.,24 refs.)

  9. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20070403 Deng Xiaoying (Zhengzhou Geo-Engineering Exploration Institute, Zhengzhou 450053, China); Yang Guoping Features and Origin of Geothermal Fluid in the New District of Hebi, Henan Provionce (Hydrogeology & Engineering Geology, ISSN1000-3665, CN11-2202/P, 32(2), 2005, p.111-114, 4 illus., 1 table, 7 refs.) Key words: thermal waters, Henan Province

  10. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131375 Dai Deqiu(Institute of GeologyHunan University of Science and TechnologyXiangtan 411201,China);Wang Shijie Comparison of Petrography and Mineral Chemistry Characters between Plagioclase Olivine Inclusions and Typical Ca,Al-Rich Inclusions(Acta Mineralogica Sinica,ISSN1000-4734CN52-1045/P,32(3),2012,p.341-348,3

  11. ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20152724 Chen Dan(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China);Fu Ronghua Study on the Responses of Landslide to Earthquake:Taking Kudiguazi Landslide as an Example(Geological Journal of China Universities,

  12. SEISMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20160094Cao Lei(Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing100029,China);Hao Jinlai Rupture Process Of March 10,2014,M W6.9 Earthquake in the Northwestern Coast of California(Chinese Journal of Geophysics,ISSN0001-

  13. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20130642 Bai Daoyuan (Hunan Institute of Geology Survey , Mineral Exploration and Development of Hunan Province , Changsha 410011 , China); Jia Baohua Potential Genesis of the Trending Changes of Jinning Period and Caledonian Structural Lineamens in Middle-Southern Hunan Province (Journal of Geomechanics , ISSN1006-6616 ,

  14. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20132755 Chang Ming(State Key Laboratory for Geo-Hazard Prevention and Geo-Environment Protection,Chengdu University of Technology,Chengdu 610059,China);Tang Chuan Prediction Model for Debris Flow Hazard Zone on Alluvial Fan in Milin Section of Yarlungzangbo River,Tibet(Journal of Engineering Geology,ISSN1004-9665

  15. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20101425 Dai Deqiu (Institute of Geology, Hunan University of Science and Technology, Xiangtan 411201, China); Lin Yangting Petrography, Mineral Chemistry of 6 New Unequilibrated Ordinary Chondrites Collected from the Grove Mountains, Antarctica(Acta Mineralogica Sinica, ISSN1000-4734, CN52-1045/P, 29(3), 2009, p.405-412, 3 illus., 3 tables, 20 refs.)

  16. SEISMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20101490 Chen Yuwei (Earthquake Administration of Anhui Province, Hefei 230031, China); Huang Xianliang Analysis of Impact of Source Region Structure on Seismology Parameter Scan Results (Seismology and Geology, ISSN0253-4967, CN11-2192/P, 31(3), 2009, p.433-440, 2 illus., 4 tables, 12 refs.)

  17. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131958 An Lili(China University of Geosciences,Beijing 100083,China);Chen JianpingIntegration and Exploitation of 3DDigital Mine Information System(Journal of Geology,ISSN1674-3636,CN32-1796/P,36(3),2012,p.280-284,2illus.,14refs.)Key words:geographic information system,Sichuan Province

  18. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071578 Chen Song(College of Civil Engi- neering,Hohai University,Nanjing 210098, China);Han Xuewei Monitoring Program System for the Foundation of Large Bridge (Hydrogeology & Engineering Geology, ISSN 1000-3665,CN 11-2202/P,32(5), 2005,p.44-47,5 illus.,3 refs.) Key words:bridges,footing

  19. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20080675 Chen Shucun(College of Civil Engineering,Hohai University,Nanjing 210098);Gao Zhengxia Application of a Refined BP Algorithm Based Elman Network to Settlement Prediction of Soft Soil Ground(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,14(3),2006,p.394-397,4 illus.,2 tables,6 refs.)

  20. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20042360 Feng Zhihan (Geological Survey of Gansu Province, Lanzhou, Gansu) Adjustment of Gravitational Base Point Net Using MATLAB (Computing Techniques for Geophysical and Geochemical Exploration, ISSN 1001-1749, CN51-1242/P, 25(4), 2003, p. 336-339, 1 illus. , 3 refs. )

  1. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071835 Chen Xifeng(China University of Geosciences,Beijing 100083,China);Peng Runmin Analysis on the Necessity and Significance of Concealed Deposits Exploration(Gansu Geology,ISSN1004-4116,CN62-1191/P,15(2),2006,p.1-4,1 table,7 refs.)Key words:blind deposits,China

  2. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20070285 Fu Xiaofang (Institute of Geology and Mineral Resources, SBGMR, Chengdu, Sichuan 610081); Hou Liwei Potential of Mineral Resources of Rare and Dispersed Elements in Sichuan Province and Countermeasures of Exploitation (Acta Geologica Sichuan, ISSN1006-0995, CN51-1273/P, 26(1), 2006, p.10-18, 6 illus., 15 refs.) Key words: mineral resources, Sichuan Province

  3. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20080948 Deng Jinfu(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China);Su Shangguo Yanshanian(Jura-Cretaceous)Orogenic Processes and Metallogenesis of the Taihangshan-Yanshan-West Liaoning Orogenic Belt,North China(Geoscience,ISSN1000-8527,CN11-2035/P,21(2)

  4. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20080252 Zhai Yusheng(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China) Earth System,Me-tallogenic System to Exploration System(Earth Science Frontiers,ISSN1005-2321,CN11-3370/P,14(1),2007,p.172-181,6 illus.,18 refs.,with English abstract)

  5. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20130838 Li Wenyuan (Xi ’ an Center , China Geological Survey , Xi ’ an 710054 , China); Niu Yaoling Geodynamic Setting and FurtherExploration of Magmatism-Related Mineralization Concentrated in the Late Paleozoic in the Northern Xinjiang Autonomous Region (Earth Science Frontiers , ISSN1005-2321 , CN11-3370/P , 19 (4)

  6. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131562 Chen Jianping(School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China);Shi Rui 3D Metallogenic Prediction for Western Section of Q8 Gold Deposit in Tongguan County of Shaanxi Province Based on Digital Mineral Deposit Model(Journal of Geology,ISSN1674,

  7. An integrative geologic, geochronologic and geochemical study of Gorgona Island, Colombia: Implications for the formation of the Caribbean Large Igneous Province

    Science.gov (United States)

    Serrano, Lina; Ferrari, Luca; Martínez, Margarita López; Petrone, Chiara Maria; Jaramillo, Carlos

    2011-09-01

    The genesis of the Caribbean Large Igneous Province (CLIP) has been associated to the melting of the Galapagos plume head at ~ 90 Ma or to the interaction between the plume and the Caribbean slab window. Gorgona Island, offshore western Colombia, is an accreted fragment of the CLIP and its highly heterogeneous igneous suite, ranging from enriched basalts to depleted komatiites and picrites, was assumed to have formed at ~ 89 Ma from different part of the plume. Here we present new geologic, geochronologic and geochemical data of Gorgona with significant implications for the formation of the CLIP. A new set of 40Ar- 39Ar ages documents a magmatic activity spanning the whole Late Cretaceous (98.7 ± 7.7 to 64.4 ± 5 Ma) followed by a shallower, picritic pyroclastic eruption in the Paleocene. Trace element and isotope geochemistry confirm the existence of an enriched (EDMM: La/Sm N ≥ 1 and ɛNd i of 5.7 to 7.8) and a depleted (DMM: La/Sm N rocks. Higher degree of melting (> 10%) of a mixed DMM + EDMM (40 to 60%) may reproduce the more depleted rocks with temperatures in the range of ambient mantle in absence of plumes. Our results contradict the notion that the CLIP formed by melting of a plume head at ~ 90 Ma. Multiple magmatic pulses over several tens of Ma in small areas like Gorgona, also recognized in other CLIP areas, suggest a long period of diffuse magmatism without a clear pattern of migration. The age span of this magmatism is broadly concurrent with the Caribbean slab window. During this time span the Farallon oceanic lithosphere (later becoming the Caribbean plate) advanced eastward ~ 1500 km, overriding the astenosphere feeding the proto-Caribbean spreading ridge. This hotter mantle flowed westward into, and mixed with, the opening mantle wedge, promoting increasing melting with time. The fortuitous occurrence of a plume passing through the slab gap area cannot be excluded but not required to produce the observed composition and degree of melting.

  8. Geologic map of Indonesia - Peta geologi Indonesia

    Science.gov (United States)

    Sigit, Soetarjo

    1965-01-01

    The geology, compiled by Th. H. F. Klompe in 1954 from published and unpublished maps of the Direktorat Geologi, has been brought up to date on the basis of investigations carried out to 1962 (Ref. Sigit, Soetarjo, "I. A brief outline of the geology of the Indonesian Archipelago, and II. Geological map of Indonesia;" Direktorat Geologi publication, 1962.)

  9. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141624 Cai Xiongfei(Key Laboratory of Geobiology and Environmental Geology,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Yang Jie A Restudy of the Upper Sinian Zhengmuguan and Tuerkeng Formations in the Helan Mountains(Journal of Stratigraphy,ISSN0253-4959CN32-1187/P,37(3),2013,p.377-386,5 illus.,2 tables,10 refs.)

  10. QUATERNARY GEOLOGY & GEOMORPHOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111129 Bai Daoyuan(Hunan Institute of Geological Survey,Changsha 410011,China);Li Chang’an Quaternary Tectonic-Sedimentary Characteristics and Environmental Evolution of Anxiang Sag in Dongting Basin and Its West Periphery(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,32(2),2010,p.120-129,6 illus.,1 table,48 refs.)Key words:Quaternary,sedimentary environment,structural evolution,Dongtinghu Basin Detailed geologic mapping and bore data was conducted to study on the Quaternary tectonic and sedimentary characteristics and environmental evolution of Anxiang Sag and its west periphery of Dongting Basin,which provided new materials for Quaternary geology of Jianghan-Dongting Basin.The sag trends north-south direction and is surrounded by normal faults.The thickness of Quaternary deposits in the sag is commonly 100~220 m with maximun thickness of 300 m,and from lower to upper,the Quaternary strata is composed of Early Pleistocene Huatian Formation and Miluo Formation,Middle Pleistocene Dongtinghu Formation

  11. ECONOMIC GEOLOGY (3)PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071077 An Zuoxiang(Petroleum Industry Press,Beijing 100011,China);Ma Ji On Bo- real-Style Petroliferous Domain(Xinjiang Petroleum Geology,ISSN1001-3873,CN65 -1107/TE,26(4),2005,p.432-436,4 illus.,9 refs.,with English abstract) Key words:oil and gas fields

  12. PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111769 Bai Yubin(School of Oil and Gas Resources,Xi’an University of Petroleum,Xi’an 710065,China);Zhang Hai Physical Properties and Main Controlling Factors for the Low-Permeability Reservoirs from a Oil Field in the Ordos Basin(Sedimentary Geology and Tethyan Geology,ISSN1009-3850,CN51-1593/P,30(3),2010,p.104-108,4 illus.,2 tables,5 refs.)Key words:low permeability reservoirs,reservoir properties,Ordos BasinThe Chang-2 reservoirs in A oil field in the Ordos Basin dominantly consist of fine-grainded feldspar sandstones which have low porosity and low-permeability,

  13. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20092028 Bai Wancheng(Gold Headquarters,Chinese Armed Police Forces,Beijing 100055,China);Dong Jianle Borrowed Model Method and Application in Metallogenic Prognosis(Geology and Prospecting,ISSN0495-5331,CN11-2043/P,44(4),2008,p.60-63,1 illus.,2 tables,8 refs.,with English abstract)Key words:prediction of deposits,geological model20092029 Cao Zubao(Xi’an Branch of China Coal Research Institute,Xi’an 710054,China)Application Study on Artificial Neural Network Method in Deformation Prediction for Foundation Pit(Exploration Engineering,ISSN1672-7428,CN11-5063/TD,35(5),2008,p.38-40,43,1 illus.,6 tables,8 refs.,

  14. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20080401 Ding Kuan(Coal Mine Managing Branch Company of Datong Mining Industry Group Company,Datong 037003,China) Surveying the Thickness of the Coal Bed by the Method of Reflecting Wave from Synchronistical Shifting of Stimulating and Receiving(Gansu Geology,ISSN1004-4116,CN62-1191/P,16(1-2),2007,p.93-96,70,3 illus.,4 tables,5 refs.)

  15. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151782 Ding Zhaoqin(Institute of Geophysical Exploration of Jilin Province,Changchun130012,China);Xu Zhihe The Possibility of Structure and Occurrence Geothermal Resources in Dunhua-Mishan Fault Zone(Huinan Section)(Jilin Geology,ISSN1001-2427,CN22-1099/P,33(2),2014,p.98-102,5illus.,1table,4refs.)Key words:geothermal resources,fracture

  16. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20041769 Fang Rui (Department of Earth Sciences, Nanjing University, Nanjing, Jiangsu); Wu Jichun Design and Implementation of New Spatial Database of Groundwa-ter (Hydrogeology & Engineering Geology, ISSN 1000-3665, CN11-2202/P, 30(5), 2003, p. 33 -36, 4 illus. , 1 table, 8 refs. ) Key words: groundwater, data basesBased on system of relational database, a data model of groundwater spatial information

  17. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20080022 Bai Daoyuan(Hunan Institute of Geology Survey,Xiangtan 411100,China);Xong Yanwang Forming Ages and Uplift Size of the Middle Kunlun Mountain--Based on Study of Plantation Surface and Apatite Fission-Track Ages(Resources Survey & Environment,ISSN1671-4814,CN32-1640/N,28(1),2007,p.5-11,4 illus.,23 refs.)

  18. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141588 Guo Shiyan(Green Energy Geothermai Development Co.,SINOPEC,Xianyang 712000,China);Li Xiaojun Reservoir Stratum Characteristics and Geothermal Resources Potential of Rongcheng Uplift Geothermal Field in Baoding,Hebei Province(Chinese Journal of Geology,ISSN0563-5020,CN11-1937/P,48(3),2013,p.922-931,2 illus.,4 tables,10 refs.)Key words:geothermal fields,Hebei Province

  19. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20082072 Chen Bailin(Institute of Geome- chanics,Chinese Academy of Geological Sci- ences,Beijing 100081,China);Wu Ganguo Baldunzl-Xiaoxigong Ductile Shear Zone and Its Ore-Controlling Effect in the Southern Beishan Area,Gansu Province (Journal of Geomeehanics,ISSN 1006—6616,CN11—3672/P,13(2),2007,p.99—109,3 illus.,4 tables,26 refs.)

  20. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20082275 He Longqing(Yichang Institute of Geology and Mineral Resources,Yichang 443003,China);Ji Wei Ore-Controlling Effect of Nappe Structure in the East Ore Zone of the Baiyangping Area,Lanping Basin,Yunnan Province(Journal of Geome- ehanics,ISSN1006—6616,CN11—3672/P, 13(2),2007,p.110—118,6 illus.,2 tables,28 refs.) Key words:nappes,structural controls, Yunnan Province

  1. ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>20122683 Cao Guangpeng ( State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China );Li Yusheng A Rock-Mechanical Study on the Stability of the Xigu Power Transmission Sta-tion Site in Jiulong County,Sichuan Province ( Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467 / P,22 ( 4 ), 2011,p.46-49,2illus.,3 tables,5refs. )

  2. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140527Chen Hailong(State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection,Chengdu University of Technology,Chengdu 610059,China);Chen Dingcai Features of the Typical Mine Debris Flows in Guizhou Province(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(1),2013,p.9-13,2illus.,1table,6refs.)Key words:debris flows,mine,Guizhou Province

  3. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151407 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Study on the Deformation in the Southern Xuefeng Orogenic Belt(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,38(3),2014,p.512-529,14illus.,71refs.,with English abstract)Key words:orogenic belts,tectonic deformation,Hunan Province

  4. EXTRATERRESTRIAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20070001 Liang Ying (State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China); Wang Henian Petrology-Mineralogy and Classification of Eleven Ordinary Chondrites from the Grove Mountains in Antarctica (Geological Journal of China Universities, ISSN1006-7493, CN32-1440/P,12(1), 2006, p.53-61, 6 illus., 4 tables, 21 refs.) Key words: meteorites, Antarctica

  5. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072979 Hang Bangming(Jiangning Branch,Nanjing Bureau of Land and Resources,Nanjing 211100,China);Hua Jianwei Application of 3-D GIS Technology in Environmental Supervision of Open Pit Mines(Jiangsu Geology,ISSN1003-6474,CN32-1258/P,30(4),2006,p.275-279,7 illus.,6 refs.)Key words:geographic information systems,mine environmentBased on a

  6. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140556Tang Hongxu(State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection,Chengdu University of Technology,Chengdu 610059,China);Zhu Jing Three-Dimensional Terrain Model Based on GAMBIT(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(1),2013,p.61-65,2illus.,7refs.)Key words:debris flows,three-dimensional models,ARCGIS,GAMBIT,C language

  7. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151343Chen Jianping(China University of Geosciences,Beijing100083,China);Yu Miao Method and Practice of 3DGeological Modeling at Key Metallogenic Belt with Large and Medium Scale(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,88(6),2014,p.1187-1195,9illus.,22refs.)Key words:geological modeling,metallogenic

  8. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141850 Chen Dongyue(School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China);Chen Jianping On 3D Ore Prospecting Modeling of Comprehensive Information for Huangshaping Polymetallic Deposit(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.489-495,12 illus.,12 refs.) Key words:polymetallic ores,data bases,Hunan Province

  9. ECONOMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111702 He Ying(Depart ment of Geology,Northwest University,Xi’an710069,China);Yue KefenInhomogeneity of Relationship Between Lithospheric Thinning and Mineralization(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,32(3),2010,p.221-224,233,63refs.)Key words:metallogenesis,lithosphere,crustal thinning

  10. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20102798 Gao Shengxiang(School of Resource and Earth Science,China University of Mining and Technology,Xuzhou 221008,China);Ye Rongzhang Establishment of Complex Geological Body FLAC3D Model by Using MATLAB Interface Program(Coal Geology & Exploration,ISSN1001-1986,CN61-1155/P,37(5),2009,p.51-53,5 illus.,4 refs.,with English abstract)Key words:FLAC3D,computer programs20102799 Li Xiuzhen(Key Laboratory of Mountain Hazards and Surface Processes,Chinese Academy of Sciences,Chengdu 610041,China);Wang Chenghua Potential Landslide Identification Model Based on Fisher Discrimination Analysis Method and Its Application(The Chinese Journal of Geological Hazard and Control,ISSN1003-8035,CN11-2825/P,20(4),2009,p.23-26,40,2 tables,11 refs.)Key words:mathematical models,landslidesAiming at ancient(old)landslides,four kinds of discrimination indexes which included nine secondary indexes for potential landslides,such as landform character,slip surface character,landslide body structure and recent activities characters,were presented.Then according to Fisher Discrimination theory,Fisher Discrimination model for the potential landslides was built.The re

  11. Heterogeneity-enhanced gas phase formation in shallow aquifers during leakage of CO2-saturated water from geologic sequestration sites

    DEFF Research Database (Denmark)

    Plampin, Michael R.; Lassen, Rune Nørbæk; Sakaki, Toshihiro

    2014-01-01

    A primary concern for geologic carbon storage is the potential for leakage of stored carbon dioxide (CO2) into the shallow subsurface where it could degrade the quality of groundwater and surface water. In order to predict and mitigate the potentially negative impacts of CO2 leakage, it is import...

  12. Geology and stable isotope geochemistry of Paleoarchean sulfur. Formation, preservation and geobiology of ancient pyrite and barite. (Utrecht Studies in Earth Sciences 031)

    NARCIS (Netherlands)

    Roerdink, D.L.

    2013-01-01

    Sulfur isotopes in ancient sulfate and sulfide minerals provide a comprehensive record of microbial processes involved in the early sulfur cycle on Earth. However, the interpretation of these isotopic signatures requires information on the geological context of such samples, because abiotic reaction

  13. INTEGRATED GEOLOGIC-ENGINEERING MODEL FOR REEF AND CARBONATE SHOAL RESERVOIRS ASSOCIATED WITH PALEOHIGHS: UPPER JURASSIC SMACKOVER FORMATION, NORTHEASTERN GULF OF MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    Ernest A. Mancini

    2002-09-25

    The University of Alabama in cooperation with Texas A&M University, McGill University, Longleaf Energy Group, Strago Petroleum Corporation, and Paramount Petroleum Company are undertaking an integrated, interdisciplinary geoscientific and engineering research project. The project is designed to characterize and model reservoir architecture, pore systems and rock-fluid interactions at the pore to field scale in Upper Jurassic Smackover reef and carbonate shoal reservoirs associated with varying degrees of relief on pre-Mesozoic basement paleohighs in the northeastern Gulf of Mexico. The project effort includes the prediction of fluid flow in carbonate reservoirs through reservoir simulation modeling which utilizes geologic reservoir characterization and modeling and the prediction of carbonate reservoir architecture, heterogeneity and quality through seismic imaging. The primary objective of the project is to increase the profitability, producibility and efficiency of recovery of oil from existing and undiscovered Upper Jurassic fields characterized by reef and carbonate shoals associated with pre-Mesozoic basement paleohighs. The principal research effort for Year 2 of the project has been reservoir characterization, 3-D modeling and technology transfer. This effort has included six tasks: (1) the study of rockfluid interactions, (2) petrophysical and engineering characterization, (3) data integration, (4) 3-D geologic modeling, (5) 3-D reservoir simulation and (6) technology transfer. This work was scheduled for completion in Year 2. Overall, the project work is on schedule. Geoscientific reservoir characterization is essentially completed. The architecture, porosity types and heterogeneity of the reef and shoal reservoirs at Appleton and Vocation Fields have been characterized using geological and geophysical data. The study of rock-fluid interactions is near completion. Observations regarding the diagenetic processes influencing pore system development and

  14. INTEGRATED GEOLOGIC-ENGINEERING MODEL FOR REEF AND CARBONATE SHOAL RESERVOIRS ASSOCIATED WITH PALEOHIGHS: UPPER JURASSIC SMACKOVER FORMATION, NORTHEASTERN GULF OF MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    Ernest A. Mancini

    2003-09-25

    The University of Alabama in cooperation with Texas A&M University, McGill University, Longleaf Energy Group, Strago Petroleum Corporation, and Paramount Petroleum Company are undertaking an integrated, interdisciplinary geoscientific and engineering research project. The project is designed to characterize and model reservoir architecture, pore systems and rock-fluid interactions at the pore to field scale in Upper Jurassic Smackover reef and carbonate shoal reservoirs associated with varying degrees of relief on pre-Mesozoic basement paleohighs in the northeastern Gulf of Mexico. The project effort includes the prediction of fluid flow in carbonate reservoirs through reservoir simulation modeling that utilizes geologic reservoir characterization and modeling and the prediction of carbonate reservoir architecture, heterogeneity and quality through seismic imaging. The primary objective of the project is to increase the profitability, producibility and efficiency of recovery of oil from existing and undiscovered Upper Jurassic fields characterized by reef and carbonate shoals associated with pre-Mesozoic basement paleohighs. The principal research effort for Year 3 of the project has been reservoir characterization, 3-D modeling, testing of the geologic-engineering model, and technology transfer. This effort has included six tasks: (1) the study of seismic attributes, (2) petrophysical characterization, (3) data integration, (4) the building of the geologic-engineering model, (5) the testing of the geologic-engineering model and (6) technology transfer. This work was scheduled for completion in Year 3. Progress on the project is as follows: geoscientific reservoir characterization is completed. The architecture, porosity types and heterogeneity of the reef and shoal reservoirs at Appleton and Vocation Fields have been characterized using geological and geophysical data. The study of rock-fluid interactions has been completed. Observations regarding the diagenetic

  15. Formats

    Directory of Open Access Journals (Sweden)

    Gehmann, Ulrich

    2012-03-01

    Full Text Available In the following, a new conceptual framework for investigating nowadays’ “technical” phenomena shall be introduced, that of formats. The thesis is that processes of formatting account for our recent conditions of life, and will do so in the very next future. It are processes whose foundations have been laid in modernity and which will further unfold for the time being. These processes are embedded in the format of the value chain, a circumstance making them resilient to change. In addition, they are resilient in themselves since forming interconnected systems of reciprocal causal circuits.Which leads to an overall situation that our entire “Lebenswelt” became formatted to an extent we don’t fully realize, even influencing our very percep-tion of it.

  16. GENERAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110001 Chi Han (State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China); Li Chusi Shock-Metamorphosed Zircons in the Fragments of the Sudbury Breccias, Ontario, Canada (Earth Science Frontiers, ISSN1005-2321, CN11-3370/P, 17(1), 2010, p.86-92, 5 illus., 42 refs.)Key words: meteorite impacts, suevite, Canada It is widely accepted that the Sudbury structure formed by large bolide impact. To find more supporting evidences, the authors used elec

  17. PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110263 Chen Anqing(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China);Chen Hongde Difference of the Upper Paleozoic Lithostratigraphic Gas Reservoirs in Ordos Basin,China(Journal of Chengdu University of Technology,ISSN1671-9727,CN51-1634/N,37(2),2010,p.120-126,4 illus.,1 table,24 refs.)Key words:lithologic reservoir,stratigraphic reservoir,Ordos BasinThe Upper Paleozoic of Ordos Basin is characterized by "gas-generating in the whole basin,gas-bearing widely and gas controlled by lithology".The comparati

  18. PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20102418 Chen Hongde(Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China);Huang Fuxi Distribution Rule and Main Controlling Factors of the Marine Facies Hydrocarbon Substances in the Middle and Upper Parts of Yangtze Region,China(Journal of Chengdu University of Technology,ISSN1671-9727,CN51-1634/N,36(6),2009,p.569-577,7 illus.,15 refs.)Key words:marine oil generation,oil and gas accumulation,Yangtze RegionUnder the guidance of the tectonic-sequence stratigraphy,sedimentology and lithofacies palaeogeography and dynamic evolutionary view,the au

  19. GEOTHERMICS GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091762 Guo Wancheng(Xining Jiulong Engineering Investigation Ltd.,Xining 810700,China);Shi Xingmei Development and Utilization of Guide Basin’s Geothermal Resources of Qinghai Province(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,35(3),2008,p.79-80,92,2 illus.,2 tables,2 refs.)Key words:geothermal resources,QinghaiThis paper introduced the background of geothermal conditions and the many years of geothermal exploration data in Guide Basin.Then,the authors discussed the geothermal resources feature of Guide basin and raised some opinions on the reasonable development and utilization of geothermal resources.

  20. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20102721 Bian Jianmin(College of Environment and Resources,Jilin University,Changchun 130026,China);Tang Jie Hydrogeochemical Characteristics in the Arsenic Poisoning Area in Western Jilin Province(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,36(5),2009,p.80-83,4 illus.,2 tables,9 refs.)Key words:groundwater,arsenic,Jilin ProvinceSupported by field survey and sample test data,the SPSS is applied to analyze the relationship between arsenic concentration and chemical components.The results show that th

  1. MATHEMATICAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112074 Guo Si(Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China);Guo Ke Solid Mineral Reserves Estimation System Development and Practice Based on Arcgis(Computing Techniques for Geophysical and Geochemical Exploration,ISSN1001-1749,CN51-1242/P,32(5),2010,p.560-564,458,10 illus.,4 tables,18 refs.)Key words:computer programs,prospective reservesGeostatistics is now the foundation of mineral reserves estimation,and it has become the industry standard for estimating reserves.The software development of solid mineral reserves estimates

  2. Effect of geological structures, rock weathering, and clay mineralogy in the formation of various landslides along Mugling-Narayanghat road section, Central Nepal Himalaya

    OpenAIRE

    Regmi, Amar Deep; YOSHIDA, Kohki

    2013-01-01

    The present study was conducted on the landslide prone area around Mugling-Narayanghat road section that consists of Lesser Himalayan and Siwaliks rocks. From more than 250 mapped landslides, ten were selected for detailed study that are supposed to the representative of the whole area. Detailed study showed that large and complex landslides are related to deep rock weathering followed by the intervention of geological structures as faults, joints, and fractures. Large landslides formed by gr...

  3. Conodont faunas across the mid-Carboniferous boundary from the Barcaliente Formation at La Lastra (Palentian Zone, Cantabrian Mountains, northwest Spain); geological setting, sedimentological characters and faunal descriptions

    OpenAIRE

    T. I. Nemyrovska; Wagner, R.H.; Winkler Prins, C.F.; Montañez, I.

    2011-01-01

    Two different tectono-stratigraphic domains are recognised in the Cantabrian Mountains, Asturian-Leonese (Cantabrian Zone) and Palentian (Palentian Zone). The area under investigation belongs to the southern part of the Palentian Domain and attention is focused on the Upper Viséan to lowermost Bashkirian limestones at the village of La Lastra in northern Palencia. A new geological map of the Palentian Zone is accompanied by a more detailed map centred on La Lastra. The Barcaliente Limestone F...

  4. STRUCTURAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110743 Bai Bin(State Key Laboratory of Enhanced Oil Recovery,PetroChina Research Institute of Petroleum Exploration & Development,Beijing 100083,China);Zhou Lifa Definition of Some Unconformities in the South Margin of Junggar Basin,NW China(Petroleum Exploration and Development,ISSN1000-0747,CN11-2360/TE,37(3),2010,p.270-280,9 illus.,31 refs.)Key words:unconformities,Junggar Basin The analysis of the south margin of the Junggar Basin and the rock lithologies and attitudes of 18 field geologic sections in its adjacent area reveals that 9 regional unconformities,dominantly angular unconformities exist.The occurrence of these unconformities is justified by geophysical evidences of logging curve and seismic profile and by geochemical evidences of trace elements and rare elements in mudstone samples,sandstone

  5. ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091943 Cao Zubao(Xi’an Branch of China Coal Research Institute,Xi’an 710054,China);Zhu Mingcheng Application of Pipe-Roof Curtain Grouting in Construction of Coal Mine Tunnel Crossing the Fractured Zone(Exploration Engineering,ISSN1672-7428,CN11-5063/TD,35(8),2008,p.79-81,3 illus.,4 refs.,with English abstract)Key words:curtain grouting20091944 Chen Changfu(Civil Engineering College,Hunan University,Changsha 410082,China);Xiao Shujun Application of Weighted Residual Method in Whole Internal Force Calculation of Anti-Slide Pile(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,35(4),2008,p.75-79,3 illus.,9 refs.)Key words:slide-resistant

  6. ENVIRONMENTAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091993 Cao Wei(Cold and Arid Regions Environmental and Engineering Research Institute,CAS,Lanzhou 730000,China);Sheng Yu Grey Relation Projection Model for the Assessment of Permafrost Environment in Coal Mining Areas(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,35(4),2008,p.111-115,2 tables,15 refs.)Key words:miming,frozen ground,environment impact statementsDue to the intense effect of coal mining activity on permafrost,the permafrost environment in coal mining areas is very frail.It is very important to assess the permafrost environment in coal mining areas.The permafrost environment is

  7. Brine Extraction and Treatment Strategies to Enhance Pressure Management and Control of CO2 Plumes in Deep Geologic Formations

    Energy Technology Data Exchange (ETDEWEB)

    Okwen, Roland [Univ. of Illinois, Champaign, IL (United States). Prairie Research Inst.; Frailey, Scott [Univ. of Illinois, Champaign, IL (United States). Prairie Research Inst.; Dastgheib, Seyed [Univ. of Illinois, Champaign, IL (United States). Prairie Research Inst.

    2017-06-14

    The overall goal of the this project is to develop and validate pressure management and carbon dioxide (CO2) plume control strategies that can address technical and economic barriers to commercial deployment of CO2 storage technologies, based on computational and field demonstration work at the Archer Daniels Midland Company (ADM) facility where the Illinois Basin–Decatur Project (IBDP) and the Illinois-Industrial Carbon Capture and Storage (IL-ICCS) projects are located. To accomplish the overall goal, the ISGS designed a brine extraction storage test (BEST) that could be completed in two phases. The goal of BEST Phase I was to evaluate the feasibilities of extraction well(s) placement, the brine extraction to CO2 injection rate ratio, extraction well completion, and brine treatment and handling. The goal of BEST Phase II would be to validate the brine extraction and treatment options deemed feasible in Phase I by (1) demonstrating the efficacy of brine extraction (BE) in managing pressure (i.e., formation) and the CO2 plume, and (2) demonstrating treatment of extracted brine with high total dissolved solids (TDS; >200,000 mg/L) using multiple advanced treatment technologies. This report details work done in Phase I. Several brine extraction and treatment scenarios were tested, simulated, and analyzed for their effectiveness in extracting brine. Initially a vertical well was studied; however, geologic modeling, reservoir modeling, and the existing facility and wellbore infrastructure dictated that the location of a vertical brine extraction well was limited to an area with no existing monitoring wells and where the well would be in relative proximity to an existing CO2 plume. Consequently, a vertical well was excluded, and a horizontal brine extraction well placed above the existing CO2 plume near two existing wells was studied. The horizontal well option allows the project to leverage the

  8. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20150369Cai Xiongfei(State Key Laboratory of Biological and Environmental Geology,Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074,China);He Wenjian New Advances in the Study of the Cambrian in Helan Mountains(Resources Survey&Environment;,ISSN1671-4814,CN32-1640/N,35(1),2014,p.12-18,2illus.,4tables,25refs.)Key words:Cambrian,Helan Mountains The Early Cambrian Suyukou Formation of the Helan Mountain is formed of the alluvial fan deposit including mixed sands and gravels with unequigranular texture,the Wudao-

  9. Geologic Mapping of Vesta

    Science.gov (United States)

    Yingst, R. A.; Mest, S. C.; Berman, D. C.; Garry, W. B.; Williams, D. A.; Buczkowski, D.; Jaumann, R.; Pieters, C. M.; De Sanctis, M. C.; Frigeri, A.; Le Corre, L.; Preusker, F.; Raymond, C. A.; Reddy, V.; Russell, C. T.; Roatsch, T.; Schenk, P. M.

    2014-01-01

    We report on a preliminary global geologic map of Vesta, based on data from the Dawn spacecraft's High- Altitude Mapping Orbit (HAMO) and informed by Low-Altitude Mapping Orbit (LAMO) data. This map is part of an iterative mapping effort; the geologic map has been refined with each improvement in resolution. Vesta has a heavily-cratered surface, with large craters evident in numerous locations. The south pole is dominated by an impact structure identified before Dawn's arrival. Two large impact structures have been resolved: the younger, larger Rheasilvia structure, and the older, more degraded Veneneia structure. The surface is also characterized by a system of deep, globe-girdling equatorial troughs and ridges, as well as an older system of troughs and ridges to the north. Troughs and ridges are also evident cutting across, and spiraling arcuately from, the Rheasilvia central mound. However, no volcanic features have been unequivocally identified. Vesta can be divided very broadly into three terrains: heavily-cratered terrain; ridge-and-trough terrain (equatorial and northern); and terrain associated with the Rheasilvia crater. Localized features include bright and dark material and ejecta (some defined specifically by color); lobate deposits; and mass-wasting materials. No obvious volcanic features are evident. Stratigraphy of Vesta's geologic units suggests a history in which formation of a primary crust was followed by the formation of impact craters, including Veneneia and the associated Saturnalia Fossae unit. Formation of Rheasilvia followed, along with associated structural deformation that shaped the Divalia Fossae ridge-and-trough unit at the equator. Subsequent impacts and mass wasting events subdued impact craters, rims and portions of ridge-and-trough sets, and formed slumps and landslides, especially within crater floors and along crater rims and scarps. Subsequent to the formation of Rheasilvia, discontinuous low-albedo deposits formed or were

  10. Geologic mapping of Vesta

    Science.gov (United States)

    Yingst, R. A.; Mest, S. C.; Berman, D. C.; Garry, W. B.; Williams, D. A.; Buczkowski, D.; Jaumann, R.; Pieters, C. M.; De Sanctis, M. C.; Frigeri, A.; Le Corre, L.; Preusker, F.; Raymond, C. A.; Reddy, V.; Russell, C. T.; Roatsch, T.; Schenk, P. M.

    2014-11-01

    We report on a preliminary global geologic map of Vesta, based on data from the Dawn spacecraft's High-Altitude Mapping Orbit (HAMO) and informed by Low-Altitude Mapping Orbit (LAMO) data. This map is part of an iterative mapping effort; the geologic map has been refined with each improvement in resolution. Vesta has a heavily-cratered surface, with large craters evident in numerous locations. The south pole is dominated by an impact structure identified before Dawn's arrival. Two large impact structures have been resolved: the younger, larger Rheasilvia structure, and the older, more degraded Veneneia structure. The surface is also characterized by a system of deep, globe-girdling equatorial troughs and ridges, as well as an older system of troughs and ridges to the north. Troughs and ridges are also evident cutting across, and spiraling arcuately from, the Rheasilvia central mound. However, no volcanic features have been unequivocally identified. Vesta can be divided very broadly into three terrains: heavily-cratered terrain; ridge-and-trough terrain (equatorial and northern); and terrain associated with the Rheasilvia crater. Localized features include bright and dark material and ejecta (some defined specifically by color); lobate deposits; and mass-wasting materials. No obvious volcanic features are evident. Stratigraphy of Vesta's geologic units suggests a history in which formation of a primary crust was followed by the formation of impact craters, including Veneneia and the associated Saturnalia Fossae unit. Formation of Rheasilvia followed, along with associated structural deformation that shaped the Divalia Fossae ridge-and-trough unit at the equator. Subsequent impacts and mass wasting events subdued impact craters, rims and portions of ridge-and-trough sets, and formed slumps and landslides, especially within crater floors and along crater rims and scarps. Subsequent to the formation of Rheasilvia, discontinuous low-albedo deposits formed or were

  11. Biochemical evolution III: polymerization on organophilic silica-rich surfaces, crystal-chemical modeling, formation of first cells, and geological clues.

    Science.gov (United States)

    Smith, J V; Arnold, F P; Parsons, I; Lee, M R

    1999-03-30

    Catalysis at organophilic silica-rich surfaces of zeolites and feldspars might generate replicating biopolymers from simple chemicals supplied by meteorites, volcanic gases, and other geological sources. Crystal-chemical modeling yielded packings for amino acids neatly encapsulated in 10-ring channels of the molecular sieve silicalite-ZSM-5-(mutinaite). Calculation of binding and activation energies for catalytic assembly into polymers is progressing for a chemical composition with one catalytic Al-OH site per 25 neutral Si tetrahedral sites. Internal channel intersections and external terminations provide special stereochemical features suitable for complex organic species. Polymer migration along nano/micrometer channels of ancient weathered feldspars, plus exploitation of phosphorus and various transition metals in entrapped apatite and other microminerals, might have generated complexes of replicating catalytic biomolecules, leading to primitive cellular organisms. The first cell wall might have been an internal mineral surface, from which the cell developed a protective biological cap emerging into a nutrient-rich "soup." Ultimately, the biological cap might have expanded into a complete cell wall, allowing mobility and colonization of energy-rich challenging environments. Electron microscopy of honeycomb channels inside weathered feldspars of the Shap granite (northwest England) has revealed modern bacteria, perhaps indicative of Archean ones. All known early rocks were metamorphosed too highly during geologic time to permit simple survival of large-pore zeolites, honeycombed feldspar, and encapsulated species. Possible microscopic clues to the proposed mineral adsorbents/catalysts are discussed for planning of systematic study of black cherts from weakly metamorphosed Archaean sediments.

  12. Subcropping Geology for the Mid-Atlantic Coastal Plain

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Subcropping geology for the Mid-Atlantic Coastal Plain was compiled and interpreted from available published sources. Formation contacts were interpolated across...

  13. Digital Geologic Map of Sherman Quadrangle, North-Central Texas

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This digital data set contains geologic formations for the 1:250,000-scale Sherman quadrangle, Texas and Oklahoma. The original data are from the Bureau of Economic...

  14. Old Geology and New Geology

    Science.gov (United States)

    2003-01-01

    [figure removed for brevity, see original site] Released 28 May 2003Mangala Vallis one of the large outflow channels that channeled large quantities of water into the northern lowlands, long ago on geological timescales. This valley is one of the few in the southern hemisphere, as well as one of the few west of the Tharsis bulge. A closer look at the channel shows more recent weathering of the old water channel: the walls of the channel show small, dark slope streaks that form in dusty areas; and much of the surrounding terrain has subtle linear markings trending from the upper left to the lower right, which are probably features sculpted and streamlined by the wind. Geology still shapes the surface of Mars today, but its methods over the eons have changed.Image information: VIS instrument. Latitude -6, Longitude 209.6 East (150.4 West). 19 meter/pixel resolution.Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

  15. Old Geology and New Geology

    Science.gov (United States)

    2003-01-01

    [figure removed for brevity, see original site] Released 28 May 2003Mangala Vallis one of the large outflow channels that channeled large quantities of water into the northern lowlands, long ago on geological timescales. This valley is one of the few in the southern hemisphere, as well as one of the few west of the Tharsis bulge. A closer look at the channel shows more recent weathering of the old water channel: the walls of the channel show small, dark slope streaks that form in dusty areas; and much of the surrounding terrain has subtle linear markings trending from the upper left to the lower right, which are probably features sculpted and streamlined by the wind. Geology still shapes the surface of Mars today, but its methods over the eons have changed.Image information: VIS instrument. Latitude -6, Longitude 209.6 East (150.4 West). 19 meter/pixel resolution.Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

  16. Geology and bedrock engineering

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-11-15

    This book deals with geology of Korea which includes summary, geology in central part and southern part in Korea and characteristic of geology structure, limestone like geology property of limestone, engineered property of limestone, and design and construction case in limestone area. It also introduces engineered property of the cenozoic, clay rock and shale, geologic and engineered property of phyllite and stratum.

  17. COAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131668 Chang Huizhen(Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process,CUMT,Ministry of Edu-cation,School of Resource and Earth Science,China University of Mining and Technology,Xuzhou 221008,China);Qin Yong Differences in of Pore Structure of Coals and Their Impact on the Permeability of Coals from the

  18. SEISMIC GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091465 Cai Xuelin(College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China);Cao Jiamin Preliminary Study on the 3-D Crust Structure for the Longmen Lithosphere and the Genesis of the Huge Wenchuan Earthquake,Sichuan Province,China(Journal of Chengdu University of Technology,ISSN1671-9727,CN51-1634/N,35(4),2008,p.357-365,8 illus.,39 refs.)Key words:deep-seated structures,large earthquakes,Longmenshan Fracture ZoneBased on a structural analysis of many seismic sounding profiles,there are two fault systems in Longmen collisional orogenic belt,Sichuan Province,China.They are both different obviously and correlative closely.One is shallow fault system composed mainly of brittle shear zones in surface crust,and the other is deep fault system composed mainly of crust-mantle ductile shear zones cutting Moho discontinuity.Based on the result of researching geological structure and seismic sounding profiles,

  19. COAL GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111053 Chen Jian(School of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China);Liu Wenzhong Organic Affinity of Trace Elements in Coal from No.10 Coal-Bed at Western Huagou,Guoyang(Coal Geology & Exploration,ISSN1001-1986,CN61-1155/P,38(4),2010,p.16-20,24,3 illus.,3 tables,19 refs.)Key words:coal,minor elements,Anhui Province In order to study the organic affinity of trace elements in coal from No.10 coal-bed at western Huagou,Guoyang,10 borehole samples were collected at exploration area of Huaibei mining area.The contents of 12 kinds of trace elements were determined by the inductively coupled plasma mass spectrometry(ICP-MS),the total organic carbon(TOC)of coal was determined by LECO carbon and sulfur analyzer,and the organic affinity of trace elements were deduced from the correlations between contents and TOCs.The results showed that the contents of V,Cr,Co,Ni,Mo,Cd,Sb,Pb and Zn were lower than

  20. PETROLEUM GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20110957 Bai Jingru(Engineering Research Centre of Ministry of Education for Comprehensive Utilization of Oil Shale,Northeast Dianli University,Jilin 132012,China);Wang Qing Basic Physicochemical Characteristics of the Huadian Oil Shale Semi-Cokes(Journal of Jilin University,ISSN1671-5888,CN22-1343/P,40(4),2010,p.905-911,5 illus.,8 tables,10 refs.,with English abstract)Key words:oil shale,Jilin Province20110958 Chen Jingyi(Faculty of Resources and Information Technology,China University of Petroleum,Beijing 102249,China);Wang Feiyu Maturity and Genetic Type of Crude Oils in Qikou Sag,Bohai Bay Basin(Xinjiang Petroleum Geology,ISSN1001-3873,CN65-1107/TE,31(3),2010,p.242-244,7 illus.,4 refs.)Key words:crude oil,Bohaiwan Basin Qikou sag is one of the rich-oil areas in Bohai Bay Basin,in which three sets of lacustrine source rocks developed in Tertiary and Paleozoic reservoirs.The geochemical analyses of 59 crude oil and 102 source rock samples from Qikou sag show that the crude oils in Qikou sag belong to mature oil,combined with the biomarkers of n-alkanes,steroid and terpenoid as well as light hydrocarbons index,

  1. INTEGRATED GEOLOGIC-ENGINEERING MODEL FOR REEF AND CARBONATE SHOAL RESERVOIRS ASSOCIATED WITH PALEOHIGHS: UPPER JURASSIC SMACKOVER FORMATION, NORTHEASTERN GULF OF MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    Ernest A. Mancini

    2001-09-14

    The University of Alabama in cooperation with Texas A&M University, McGill University, Longleaf Energy Group, Strago Petroleum Corporation, and Paramount Petroleum Company are undertaking an integrated, interdisciplinary geoscientific and engineering research project. The project is designed to characterize and model reservoir architecture, pore systems and rock-fluid interactions at the pore to field scale in Upper Jurassic Smackover reef and carbonate shoal reservoirs associated with varying degrees of relief on pre-Mesozoic basement paleohighs in the northeastern Gulf of Mexico. The project effort includes the prediction of fluid flow in carbonate reservoirs through reservoir simulation modeling which utilizes geologic reservoir characterization and modeling and the prediction of carbonate reservoir architecture, heterogeneity and quality through seismic imaging. The primary objective of the project is to increase the profitability, producibility and efficiency of recovery of oil from existing and undiscovered Upper Jurassic fields characterized by reef and carbonate shoals associated with pre-Mesozoic basement paleohighs. The principal research effort for Year 1 of the project has been reservoir description and characterization. This effort has included four tasks: (1) geoscientific reservoir characterization, (2) the study of rock-fluid interactions, (3) petrophysical and engineering characterization and (4) data integration. This work was scheduled for completion in Year 1. Overall, the project work is on schedule. Geoscientific reservoir characterization is essentially completed. The architecture, porosity types and heterogeneity of the reef and shoal reservoirs at Appleton and Vocation Fields have been characterized using geological and geophysical data. The study of rock-fluid interactions has been initiated. Observations regarding the diagenetic processes influencing pore system development and heterogeneity in these reef and shoal reservoirs have been

  2. California Geological Survey Geologic Map Index

    Data.gov (United States)

    California Department of Resources — All the individual maps from the Geologic Atlas of California and the Regional Geologic map series have been georeferenced for display in a GIS (and viewable online...

  3. Geologic Map of Alaska: geologic units

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This dataset consists of a polygon coverage and associated attribute data derived from the 1980 Geologic Map of Alaska compiled by H.M. Beikman and published by the...

  4. INTEGRATED GEOLOGIC-ENGINEERING MODEL FOR REEF AND CARBONATE SHOAL RESERVOIRS ASSOCIATED WITH PALEOHIGHS: UPPER JURASSIC SMACKOVER FORMATION, NORTHEASTERN GULF OF MEXICO

    Energy Technology Data Exchange (ETDEWEB)

    Ernest A. Mancini

    2004-02-25

    The University of Alabama, in cooperation with Texas A&M University, McGill University, Longleaf Energy Group, Strago Petroleum Corporation, and Paramount Petroleum Company, has undertaken an integrated, interdisciplinary geoscientific and engineering research project. The project is designed to characterize and model reservoir architecture, pore systems and rock-fluid interactions at the pore to field scale in Upper Jurassic Smackover reef and carbonate shoal reservoirs associated with varying degrees of relief on pre-Mesozoic basement paleohighs in the northeastern Gulf of Mexico. The project effort includes the prediction of fluid flow in carbonate reservoirs through reservoir simulation modeling which utilizes geologic reservoir characterization and modeling and the prediction of carbonate reservoir architecture, heterogeneity and quality through seismic imaging. The primary goal of the project is to increase the profitability, producibility and efficiency of recovery of oil from existing and undiscovered Upper Jurassic fields characterized by reef and carbonate shoals associated with pre-Mesozoic basement paleohighs. Geoscientific reservoir property, geophysical seismic attribute, petrophysical property, and engineering property characterization has shown that reef (thrombolite) and shoal reservoir lithofacies developed on the flanks of high-relief crystalline basement paleohighs (Vocation Field example) and on the crest and flanks of low-relief crystalline basement paleohighs (Appleton Field example). The reef thrombolite lithofacies have higher reservoir quality than the shoal lithofacies due to overall higher permeabilities and greater interconnectivity. Thrombolite dolostone flow units, which are dominated by dolomite intercrystalline and vuggy pores, are characterized by a pore system comprised of a higher percentage of large-sized pores and larger pore throats. Rock-fluid interactions (diagenesis) studies have shown that although the primary control on

  5. Petrophysical Characterization of Arroyal Antiform Geological Formations (Aguilar de Campoo, Palencia) as a Storage and Seal Rocks in the Technology Development Plant for Geological CO{sub 2} Storage (Hontomin, Burgos); Caracterizacin Petrofisica de las Formaciones Geologicas de la Antiforma de Arroyal (Aguilar de Campoo, Palencia) como Posibles Rocas Almacen y Sello en la Planta de Desarrollo Tecnologico de Almacenamiento Geologico de CO{sub 2} (Hontomin, Burgos)

    Energy Technology Data Exchange (ETDEWEB)

    Campos, R.; Barrios, I.; Gonzalez, A. M.; Pelayo, M.; Saldana, R.

    2011-05-13

    The geological storage program of Energy City Foundation is focusing its research effort in the Technological Development and Research Plant in Hontomin (Burgos) start off. The present report shows the petrophysical characterization of of the Arroyal antiform geological formations since they are representatives, surface like, of the storage and seal formations that will be found in the CO{sub 2} injection plant in Hontomin. In this petrophysics characterization has taken place the study of matrix porosity, specific surface and density of the storage and seal formations. Mercury intrusion porosimetry, N{sub 2} adsorption and He pycnometry techniques have been used for the characterization. Furthermore, it has carried out a mineralogical analysis of the seal materials by RX diffraction. (Author) 26 refs.

  6. Biochemical evolution III: Polymerization on organophilic silica-rich surfaces, crystal–chemical modeling, formation of first cells, and geological clues

    Science.gov (United States)

    Smith, Joseph V.; Arnold, Frederick P.; Parsons, Ian; Lee, Martin R.

    1999-01-01

    Catalysis at organophilic silica-rich surfaces of zeolites and feldspars might generate replicating biopolymers from simple chemicals supplied by meteorites, volcanic gases, and other geological sources. Crystal–chemical modeling yielded packings for amino acids neatly encapsulated in 10-ring channels of the molecular sieve silicalite-ZSM-5-(mutinaite). Calculation of binding and activation energies for catalytic assembly into polymers is progressing for a chemical composition with one catalytic Al–OH site per 25 neutral Si tetrahedral sites. Internal channel intersections and external terminations provide special stereochemical features suitable for complex organic species. Polymer migration along nano/micrometer channels of ancient weathered feldspars, plus exploitation of phosphorus and various transition metals in entrapped apatite and other microminerals, might have generated complexes of replicating catalytic biomolecules, leading to primitive cellular organisms. The first cell wall might have been an internal mineral surface, from which the cell developed a protective biological cap emerging into a nutrient-rich “soup.” Ultimately, the biological cap might have expanded into a complete cell wall, allowing mobility and colonization of energy-rich challenging environments. Electron microscopy of honeycomb channels inside weathered feldspars of the Shap granite (northwest England) has revealed modern bacteria, perhaps indicative of Archean ones. All known early rocks were metamorphosed too highly during geologic time to permit simple survival of large-pore zeolites, honeycombed feldspar, and encapsulated species. Possible microscopic clues to the proposed mineral adsorbents/catalysts are discussed for planning of systematic study of black cherts from weakly metamorphosed Archaean sediments. PMID:10097060

  7. Arctic Geology (geoarcst)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The digitally compiled map includes geology, oil and gas field centerpoints, and geologic provinces of the Arctic (North Pole area encircled by 640 N Latitude). The...

  8. Visible Geology - Interactive online geologic block modelling

    Science.gov (United States)

    Cockett, R.

    2012-12-01

    Geology is a highly visual science, and many disciplines require spatial awareness and manipulation. For example, interpreting cross-sections, geologic maps, or plotting data on a stereonet all require various levels of spatial abilities. These skills are often not focused on in undergraduate geoscience curricula and many students struggle with spatial relations, manipulations, and penetrative abilities (e.g. Titus & Horsman, 2009). A newly developed program, Visible Geology, allows for students to be introduced to many geologic concepts and spatial skills in a virtual environment. Visible Geology is a web-based, three-dimensional environment where students can create and interrogate their own geologic block models. The program begins with a blank model, users then add geologic beds (with custom thickness and color) and can add geologic deformation events like tilting, folding, and faulting. Additionally, simple intrusive dikes can be modelled, as well as unconformities. Students can also explore the interaction of geology with topography by drawing elevation contours to produce their own topographic models. Students can not only spatially manipulate their model, but can create cross-sections and boreholes to practice their visual penetrative abilities. Visible Geology is easy to access and use, with no downloads required, so it can be incorporated into current, paper-based, lab activities. Sample learning activities are being developed that target introductory and structural geology curricula with learning objectives such as relative geologic history, fault characterization, apparent dip and thickness, interference folding, and stereonet interpretation. Visible Geology provides a richly interactive, and immersive environment for students to explore geologic concepts and practice their spatial skills.; Screenshot of Visible Geology showing folding and faulting interactions on a ridge topography.

  9. Detailed geologic field mapping and radiometric dating of the Abanico Formation in the Principal Cordillera, central Chile: Evidence of protracted volcanism and implications for Cenozoic tectonics

    Science.gov (United States)

    Mosolf, J.; Gans, P. B.; Wyss, A. R.; Cottle, J. M.

    2011-12-01

    Many aspects of the long-term evolution of intra-arc processes remain poorly understood, including temporal trends in magmatism, temporal and spatial patterns of volcanism, and styles of arc deformation. The Abanico Formation in the Principal Cordillera of central Chile is a thick, well-exposed section of volcanogenic strata providing a superb locale for the investigation of continental arc dynamics over a 60+ myr timescale. In this study, eight new litho-stratigraphic members of the Abanico Formation are described and mapped in the Río Tinguiririca river area. Mapping and field observations show the Abanico Formation measures up to ~2.5 km in composite stratigraphic thickness. The lower ~1.1 km of the section (> 46 Ma) is dominated by andesitic breccias interbedded with andesite, basaltic andesite, and olivine basalt lavas. The upper 1.4 km of the section (volcanics composed mainly of andesite, basaltic andesite, and basalt lavas. A strong deformational overprint has tilted, folded, and faulted the Abanico map units. Fold axes and reverse faults, both east and west directed, are generally N-S trending. Reverse faults achieve up to ~50 Ma of stratigraphic separation, placing Campanian strata on Miocene rocks with up to ~2 km of vertical throw. The Abanico Formation is also offset by numerous steeply-dipping, oblique-slip faults with 100+ meters of slip. The Abanico Formation is interpreted to have been emplaced within an active arc, with progressively more evolved material being erupted up section during the Campanian to Miocene, followed by more mafic volcanism during the Pliocene and Quaternary. Radiometric ages bounding intra-formational unconformities imply that shortening commenced no later than the early Miocene, with an older deformational episode possibly preceding it. Results of this study clearly demonstrate the age of the Abanico Formation extends from Campanian to Miocene, requiring a significant revision of the current mid-Tertiary age paradigm for

  10. Ultra-deep oxidation and exotic copper formation at the late pliocene boyongan and bayugo porphyry copper-gold deposits, surigao, philippines: Geology, mineralogy, paleoaltimetry, and their implications for Geologic, physiographic, and tectonic controls

    Science.gov (United States)

    Braxton, D.P.; Cooke, D.R.; Ignacio, A.M.; Rye, R.O.; Waters, P.J.

    2009-01-01

    during supergene oxidation. Isotopic measurements of oxygen in supergene kaolinite from Boyongan suggest that local paleometeoric water involved in weathering had a ??180 composition of approximately -5.7 per mil. At the latitude of the southern Philippines, this value corresponds to Pleistocene rain water condensing at elevations between 750 and 1,050 m above contemporary sea level, providing a maximum estimate for the surface elevation during weathering of the porphyry systems. Physiographic reconstuctions suggest that the deep oxidation profile at Boyongan formed in an environment of high topographic relief immediately east of a prominent (>550 m) escarpment. The high permeability contrast between the breccia complex and the surrounding wall rocks, coupled with the proximity of the breccia complex to the escarpment, led to a depressed groundwater table and a vertically extensive unsaturated zone in the immediate vicinity of Boyongan. This thick vadose zone and the low hypogene pyrite/copper sulfide ratios (0.6) at Boyongan promoted in situ oxidation of copper sulfides with only modest (copper. In contrast, higher hypogene pyrite/chalcopyrite ratios (2.3) at Bayugo led to greater acid production during weathering and more complete leaching of copper above the base of oxidation. This process promoted significant (600 m) lateral dispersion of copper down the paleohydraulic gradient into the diatreme breccia comple, ultimately leading to the formation of an exotic copper deposit. ?? 2009 Society of Economices Geologists, Inc.

  11. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20152177 Chen Hongjun(Key Laboratory of Marine Mineral Resources,Guangzhou Marine Geological Survey,Ministry of Land and Resources,Guangzhou 510075,China);Pen Xuechao A Brief Review of 1∶1 000 000 Marine Geological Survey and Mapping Results of the Hainan Sheet in the South China Sea(Marine Geology&Quaternary Geology,

  12. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20140582 Fang Xisheng(Key Lab.of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Shi Xuefa Mineralogy of Surface Sediment in the Eastern Area off the Ryukyu Islands and Its Geological Significance(Marine Geology & Quaternary Geology,ISSN0256-1492,CN37

  13. QUATERNARY GEOLOGY& GEOMORPHOLOGY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20160466Cao Fugen(No.1Geological Survey Team,Xinjiang Bureau of Geology and Mineral Resources and Development,Urumqi830013,China);Zhao Shuming Geological Characteristics and Significance of the Nanhua Period Tillite from Northern Yamansu Area in Eastern Tianshan,Xinjiang(Xinjiang Geology,ISSN1000-8845,CN65-1092/P,33

  14. Geology of the Lower Cretaceous Travis Peak Formation, East Texas. Depositional history, diagenesis, structure, and reservoir-engineering implications. Topical report, November 1982-February 1990

    Energy Technology Data Exchange (ETDEWEB)

    Dutton, S.P.; Laubach, S.E.; Tye, R.S.; Baumgardner, R.W.; Herrington, K.L.

    1990-06-01

    The report summarizes stratigraphic, petrographic, and structural studies of the Lower Cretaceous Travis Peak Formation, a low-permeability gas sandstone in East Texas, and presents reservoir engineering implications. Depositional systems in this region were interpreted from logs and cores and include (1) a braided- to meandering-fluvial system that forms the majority of the Travis Peak section; (2) deltaic deposits interbedded with the distal part of the fluvial system; (3) paralic deposits that overlie and interfinger with the deltaic and fluvial deposits near the top of the Travis Peak; and (4) shelf deposits present at the downdip extent of the formation. Petrographic studies indicate the sandstones are quartzarenites and subarkoses. Cementation by quartz, dolomite, ankerite, illite, chlorite, and reservoir bitumen have reduced porosity to less than 8 percent and permeability to less than 0.1 md throughout most of the formation. Structurally deeper sandstones are more intensely quartz cemented than are shallower sandstones and contain abundant, open natural fractures. Borehole breakouts and drilling-induced fractures in core can be used to predict horizontal stress directions and the direction of hydraulic fracture propagation. Hydraulic fractures propagate in directions subparallel to the east-northeast strike of the natural fractures; thus, hydraulically induced fractures may not intersect many natural fractures.

  15. Planetary Geologic Mapping Handbook - 2009

    Science.gov (United States)

    Tanaka, K. L.; Skinner, J. A.; Hare, T. M.

    2009-01-01

    . Terrestrial geologic maps published by the USGS now are primarily digital products using geographic information system (GIS) software and file formats. GIS mapping tools permit easy spatial comparison, generation, importation, manipulation, and analysis of multiple raster image, gridded, and vector data sets. GIS software has also permitted the development of project-specific tools and the sharing of geospatial products among researchers. GIS approaches are now being used in planetary geologic mapping as well (e.g., Hare and others, 2009). Guidelines or handbooks on techniques in planetary geologic mapping have been developed periodically (e.g., Wilhelms, 1972, 1990; Tanaka and others, 1994). As records of the heritage of mapping methods and data, these remain extremely useful guides. However, many of the fundamental aspects of earlier mapping handbooks have evolved significantly, and a comprehensive review of currently accepted mapping methodologies is now warranted. As documented in this handbook, such a review incorporates additional guidelines developed in recent years for planetary geologic mapping by the NASA Planetary Geology and Geophysics (PGG) Program s Planetary Cartography and Geologic Mapping Working Group s (PCGMWG) Geologic Mapping Subcommittee (GEMS) on the selection and use of map bases as well as map preparation, review, publication, and distribution. In light of the current boom in planetary exploration and the ongoing rapid evolution of available data for planetary mapping, this handbook is especially timely.

  16. Coal geology of the Paleocene-Eocene Calvert Bluff Formation (Wilcox Group) and the Eocene Manning Formation (Jackson Group) in east-central Texas; field trip guidebook for the Society for Organic Petrology, Twelfth Annual Meeting, The Woodlands, Texas, August 30, 1995

    Science.gov (United States)

    Warwick, Peter D.; Crowley, Sharon S.

    1995-01-01

    The Jackson and Wilcox Groups of eastern Texas (fig. 1) are the major lignite producing intervals in the Gulf Region. Within these groups, the major lignite-producing formations are the Paleocene-Eocene Calvert Bluff Formation (Wilcox) and the Eocene Manning Formation (Jackson). According to the Keystone Coal Industry Manual (Maclean Hunter Publishing Company, 1994), the Gulf Coast basin produces about 57 million short tons of lignite annually. The state of Texas ranks number 6 in coal production in the United States. Most of the lignite is used for electric power generation in mine-mouth power plant facilities. In recent years, particular interest has been given to lignite quality and the distribution and concentration of about a dozen trace elements that have been identified as potential hazardous air pollutants (HAPs) by the 1990 Clean Air Act Amendments. As pointed out by Oman and Finkelman (1994), Gulf Coast lignite deposits have elevated concentrations of many of the HAPs elements (Be, Cd, Co, Cr, Hg, Mn, Se, U) on a as-received gm/mmBtu basis when compared to other United States coal deposits used for fuel in thermo-electric power plants. Although regulations have not yet been established for acceptable emissions of the HAPs elements during coal burning, considerable research effort has been given to the characterization of these elements in coal feed stocks. The general purpose of the present field trip and of the accompanying collection of papers is to investigate how various aspects of east Texas lignite geology might collectively influence the quality of the lignite fuel. We hope that this collection of papers will help future researchers understand the complex, multifaceted interrelations of coal geology, petrology, palynology and coal quality, and that this introduction to the geology of the lignite deposits of east Texas might serve as a stimulus for new ideas to be applied to other coal basins in the U.S. and abroad.

  17. JPEG formatted images of EdgeTech SB-512i, EdgeTech SB-424, and Knudsen 3200 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts within northern Cape Cod Bay.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  18. PNG formatted images of Edgetech SB-512i chirp seismic-reflection profiles collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological...

  19. PNG formatted images of EdgeTech SB-424 seismic-reflection profiles collected by the U.S. Geological Survey -Woods Hole Coastal and Marine Science Center offshore of the Elizabeth Islands, MA, 2010.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  20. PNG formatted images of EdgeTech SB-512i seismic-reflection profiles collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center offshore of the Gulf Islands, MS, 2010.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In 2010, the U.S. Geological Survey in Woods Hole, MA and St. Petersburg, FL, in partnership with the U.S. Army Corps of Engineers, Mobile District conducted...

  1. JPEG formatted images of EdgeTech SB-512i, EdgeTech SB-424, and Knudsen 3200 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts within northern Cape Cod Bay.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  2. PNG formatted images of EdgeTech SB-512i chirp seismic-reflection profiles collected by the U.S. Geological Survey in 2009, 2010, and 2011 offshore of Massachusetts within Vineyard Sound.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  3. JPEG formatted images of EdgeTech SB-512i chirp seismic-reflection profiles collected in Buzzards Bay by the U.S. Geological Survey offshore of Massachusetts in 2009, 2010, and 2011.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  4. DH_SeismicProfiles: JPEG formatted images of EdgeTech SB-512i and SB-424 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts between Duxbury and Hull.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  5. PNG formatted images of EdgeTech SB-424 seismic-reflection profiles collected by the U.S. Geological Survey -Woods Hole Coastal and Marine Science Center offshore of the Elizabeth Islands, MA, 2010.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  6. JPEG formatted images of EdgeTech SB-512i and SB-424 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts between Duxbury and Hull (DH_SeismicProfiles)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  7. PNG formatted images of EdgeTech SB-512i chirp seismic-reflection profiles collected by the U.S. Geological Survey in 2009, 2010, and 2011 offshore of Massachusetts within Vineyard Sound.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  8. JPEG formatted images of EdgeTech SB-512i chirp seismic-reflection profiles collected in Buzzards Bay by the U.S. Geological Survey offshore of Massachusetts in 2009, 2010, and 2011.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  9. DH_SeismicProfiles: JPEG formatted images of EdgeTech SB-512i and SB-424 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts between Duxbury and Hull.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal...

  10. PNG formatted images of EdgeTech SB-512i seismic-reflection profiles collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center offshore of the Gulf Islands, MS, 2010.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In 2010, the U.S. Geological Survey in Woods Hole, MA and St. Petersburg, FL, in partnership with the U.S. Army Corps of Engineers, Mobile District conducted...

  11. PNG formatted images of Edgetech SB-512i chirp seismic-reflection profiles collected by the U.S. Geological Survey along the Delmarva Peninsula, MD and VA, 2014

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. A U.S. Geological...

  12. JPEG formatted images of EdgeTech SB-512i, EdgeTech SB-424, and Knudsen 3200 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts within northern Cape Cod Bay.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  13. DH_SeismicProfiles: JPEG formatted images of EdgeTech SB-512i and SB-424 chirp seismic-reflection profiles collected by the U.S. Geological Survey offshore of Massachusetts between Duxbury and Hull.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS),...

  14. Intermediate-Scale Investigation of Capillary and Dissolution Trapping during CO2 Injection and Post-Injection in Heterogeneous Geological Formations

    Science.gov (United States)

    Cihan, A.; Illangasekare, T. H.; Zhou, Q.; Birkholzer, J. T.; Rodriguez, D.

    2010-12-01

    The capillary and dissolution trapping processes are believed to be major trapping mechanisms during CO2 injection and post-injection in heterogeneous subsurface environments. These processes are important at relatively shorter time periods compared to mineralization and have a strong impact on storage capacity and leakage risks, and they are suitable to investigate at reasonable times in the laboratory. The objectives of the research presented is to investigate the effect of the texture transitions and variability in heterogeneous field formations on the effective capillary and dissolution trapping at the field scale through multistage analysis comprising of experimental and modeling studies. A series of controlled experiments in intermediate-scale test tanks are proposed to investigate the key processes involving (1) viscous fingering of free-phase CO2 along high-permeability (or high-K) fast flow pathways, (2) dynamic intrusion of CO2 from high-K zones into low-K zones by capillarity (as well as buoyancy), (3) diffusive transport of dissolved CO2 into low-K zones across large interface areas, and (4) density-driven convective mass transfer into CO2-free regions. The test tanks contain liquid sampling ports to measure spatial and temporal changes in concentration of dissolved fluid as the injected fluid migrates. In addition to visualization and capturing images through digital photography, X-ray and gamma attenuation methods are used to measure phase saturations. Heterogeneous packing configurations are created with tightly packed sands ranging from very fine to medium fine to mimic sedimentary rocks at potential storage formations. Effect of formation type, injection pressure and injection rate on trapped fluid fraction are quantified. Macroscopic variables such as saturation, pressure and concentration that are measured will be used for testing the existing macroscopic models. The applicability of multiphase flow theories will be evaluated by comparing with

  15. Simulation model analysis of the most promising geological sequestration formation candidates in the Rocky Mountain region, USA, with focus on uncertainty assessment

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Si-Yong [Univ. of Utah, Salt Lake City, UT (United States); Zaluski, Wade [Schlumberger Carbon Services, Houston, TX (United States); Will, Robert [Schlumberger Carbon Services, Houston, TX (United States); Eisinger, Chris [Colorado Geological Survey, Golden, CO (United States); Matthews, Vince [Colorado Geological Survey, Golden, CO (United States); McPherson, Brian [Univ. of Utah, Salt Lake City, UT (United States)

    2013-12-31

    The purpose of this report is to report results of reservoir model simulation analyses for forecasting subsurface CO2 storage capacity estimation for the most promising formations in the Rocky Mountain region of the USA. A particular emphasis of this project was to assess uncertainty of the simulation-based forecasts. Results illustrate how local-scale data, including well information, number of wells, and location of wells, affect storage capacity estimates and what degree of well density (number of wells over a fixed area) may be required to estimate capacity within a specified degree of confidence. A major outcome of this work was development of a new workflow of simulation analysis, accommodating the addition of “random pseudo wells” to represent virtual characterization wells.

  16. Simulation model analysis of the most promising geological sequestration formation candidates in the Rocky Mountain region, USA, with focus on uncertainty assessment

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Si-Yong [Univ. of Utah, Salt Lake City, UT (United States); Zaluski, Wade [Schlumberger Carbon Services, Houston, TX (United States); Will, Robert [Schlumberger Carbon Services, Houston, TX (United States); Eisinger, Chris [Colorado Geological Survey, Golden, CO (United States); Matthews, Vince [Colorado Geological Survey, Golden, CO (United States); McPherson, Brian [Univ. of Utah, Salt Lake City, UT (United States)

    2013-12-31

    The purpose of this report is to report results of reservoir model simulation analyses for forecasting subsurface CO2 storage capacity estimation for the most promising formations in the Rocky Mountain region of the USA. A particular emphasis of this project was to assess uncertainty of the simulation-based forecasts. Results illustrate how local-scale data, including well information, number of wells, and location of wells, affect storage capacity estimates and what degree of well density (number of wells over a fixed area) may be required to estimate capacity within a specified degree of confidence. A major outcome of this work was development of a new workflow of simulation analysis, accommodating the addition of “random pseudo wells” to represent virtual characterization wells.

  17. Distribution and geological significance of 17α(H)-diahopanes from different hydrocarbon source rocks of Yanchang Formation in Ordos Basin

    Institute of Scientific and Technical Information of China (English)

    ZHANG WenZheng; YANG Hua; HOU LiHui; LIU Fei

    2009-01-01

    Based on GC-MS testing data of many saturated hydrocarbon samples, 17α(H)-30 diahopanes (C30*) are extensively distributed in the lacustrine hydrocarbon source rocks of the Yanchang Formation in Ordos Basin, but show remarkable differences in relative abundance among various source rocks. Generally, Chang 7 high-quality source rock (oil shale) developed in deep lake anoxic environment shows lower C30* content, whereas Chang 6-9 dark mudstone developed in shallow to semi-deep lake, sub-oxidiz- ing environment shows relatively high to high C30* value. Particularly, Chang 7 and Chang 9 black mudstones in Zhidan region in the northeast of the lake basin show extremely high C30* value. A com- parative analysis was made based on lithology, organic types and various geochemical parameters indicative of redox environment, and the results indicate that environmental factors such as redox set- tings and lithology are key factors that control the C30* relative abundance, while organic types and maturity may be minor factors. High to extremely high C30* values are indicative of sub-oxidizing envi- ronment of fresh-brackish water and shallow to semi-deep lake. Therefore, research on C30* relative content and distribution in lacustrine hydrocarbon source rocks in the Yanchang Formation, especially on the difference in C30* between Chang 7 high-quality source rocks (oil shale) and Chang 6-91 source rocks (dark mudstone), will provide an important approach for classification of Mesozoic lacustrine crudes and detailed oil-source correlation in the basin.

  18. Distribution and geological significance of 17α(H)-diahopanes from different hydrocarbon source rocks of Yanchang Formation in Ordos Basin

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Based on GC-MS testing data of many saturated hydrocarbon samples, 17α(H)-C30 diahopanes (C30*) are extensively distributed in the lacustrine hydrocarbon source rocks of the Yanchang Formation in Ordos Basin, but show remarkable differences in relative abundance among various source rocks. Generally, Chang 7 high-quality source rock (oil shale) developed in deep lake anoxic environment shows lower C30* content, whereas Chang 6-9 dark mudstone developed in shallow to semi-deep lake, sub-oxidizing environment shows relatively high to high C30* value. Particularly, Chang 7 and Chang 9 black mudstones in Zhidan region in the northeast of the lake basin show extremely high C30* value. A comparative analysis was made based on lithology, organic types and various geochemical parameters indicative of redox environment, and the results indicate that environmental factors such as redox settings and lithology are key factors that control the C30* relative abundance, while organic types and maturity may be minor factors. High to extremely high C30* values are indicative of sub-oxidizing environment of fresh-brackish water and shallow to semi-deep lake. Therefore, research on C30* relative content and distribution in lacustrine hydrocarbon source rocks in the Yanchang Formation, especially on the difference in C30* between Chang 7 high-quality source rocks (oil shale) and Chang 6-91 source rocks (dark mudstone), will provide an important approach for classification of Mesozoic lacustrine crudes and detailed oil-source correlation in the basin.

  19. Geological Characteristics of Gas Accumulation Combination of Persian Khuff Formation in Gulf Basin%波斯湾盆地Khuff组成藏组合地质特征

    Institute of Scientific and Technical Information of China (English)

    李浩武; 童晓光

    2012-01-01

    The combination of source rock, reservoir and cap rock in the Persian Khuff Formation is the most important gas accumulation combination in the Persian Gulf basin. Both Permian Khuff carbonate and interlayer anhydrite consist in the basic elements of gas accumulation combination of Persian Khuff Formation. The Silurian Qusaiba Formation hot shale is the source rock, with wide distribution, high TOC and moderate thermal maturity at late Craterous. The time of trap formation is earlier than that of hydrocarbon generation window,and many basement faults take vertically a good passageway for hydrocarbon migration from Qusaiba hot shale to Unayzah sandstone and the Unayzah sandstone make a lateral migration passageway. The cyclically deposited anhydrite and carbonates act the good cap rock and high quality reservoir. The Khuff Formation reservoir rocks with good original property are composed of oolite, pellete, hiodetritus packstone and grainstone,with good moldic pore and interparticle pore. The action of leaching and dolomitization greatly improved the reservoir pore at later stage. In most area, the faults do not make the cap rock loss the sealing, so little gas is lost. The potential area of gas exploration is in the overlay area of Qusaiba'Formation mature source rock and interlayer anhydrite, including West Arabian sub-basin, central- east part of Widyan-Mesopotamia sub-basin, northwest of Persian Gulf, and southern area of Ghawar oil field. It is paid more attention in the future to identify the big traps with low closure. Additionally,for the high economy limit of exploration and development in the Middle East, the production for small hydrocar- bon reservoirs need the support of high oil price.%Khuff组成藏组合是波斯湾盆地最重要的天然气成藏组合,二叠系Khuff组储层和层间硬石膏盖层构成了成藏组合的基本要素。下志留统Qusaiba段热页岩是Khuff组成藏组合的烃源岩,其分布广、有机质含量高,在晚

  20. Prototype of Partial Cutting Tool of Geological Map Images Distributed by Geological Web Map Service

    Science.gov (United States)

    Nonogaki, S.; Nemoto, T.

    2014-12-01

    Geological maps and topographical maps play an important role in disaster assessment, resource management, and environmental preservation. These map information have been distributed in accordance with Web services standards such as Web Map Service (WMS) and Web Map Tile Service (WMTS) recently. In this study, a partial cutting tool of geological map images distributed by geological WMTS was implemented with Free and Open Source Software. The tool mainly consists of two functions: display function and cutting function. The former function was implemented using OpenLayers. The latter function was implemented using Geospatial Data Abstraction Library (GDAL). All other small functions were implemented by PHP and Python. As a result, this tool allows not only displaying WMTS layer on web browser but also generating a geological map image of intended area and zoom level. At this moment, available WTMS layers are limited to the ones distributed by WMTS for the Seamless Digital Geological Map of Japan. The geological map image can be saved as GeoTIFF format and WebGL format. GeoTIFF is one of the georeferenced raster formats that is available in many kinds of Geographical Information System. WebGL is useful for confirming a relationship between geology and geography in 3D. In conclusion, the partial cutting tool developed in this study would contribute to create better conditions for promoting utilization of geological information. Future work is to increase the number of available WMTS layers and the types of output file format.

  1. The Key Method of Converting MapGIS Geological Map to SuperMap Format%MapGIS 地质图到 SuperMap 格式转换的关键方法的实现

    Institute of Scientific and Technical Information of China (English)

    李堃; 黄小洪; 康博闻

    2013-01-01

    In the development of GIS software product of land , making various thematic maps is the focus of system construction , and is also the core of realizing the mode of management named "mining one map"for land resources .At present , the existing data maps of the land and resources management departments at all levels are the MapGIS data format .Among them, the geological map is par-ticularly prominent.Now, because the MapGIS data format and the SuperMap format cannot be directly converted , which causes in-convenience to product development , and leads to an increase in manpower cost and time cost .Therefore , this paper presents a meth-od based on Feature Manipulate Engineering ( FME) to transform data format in large quantities , and obtaining the color information of original map by setting the system .What's more, the color information is transformed into the thematic map file in XML by writing codes.After the above steps , the method not only realizes the geological map conversion from MapGIS format to SuperMap format , but also retains the original map color scheme .By this way , it reduces the workload , shortens the working time and improves the practica-bility of the thematic map , which lays a solid foundation for the wide application of GIS software products in land industry .%在国土GIS软件产品的开发中,各种专题图的制作是系统构建的重点,也是实现国土资源“矿政一张图”式管理的核心。目前,各级国土资源管理部门现有的图件资料多已MapGIS数据格式为主,其中以地质图的情况尤为突出。由于当前MapGIS数据格式与SuperMap格式无法直接实现转换,这就给产品的开发造成不便,导致人力成本和时间成本的增加。为此,本文提出了一种基于空间数据转换处理系统( FME)进行数据格式批量转换的方法,并通过设置实现对原图件颜色信息的获取。在此基础上,通过程序编写进一步将图件的颜色信

  2. Thermodynamic Properties of Magnesium Chloride Hydroxide Hydrate (Mg3Cl(OH)5:4H2O, Phase 5), and Its importance to Nuclear Waste Isolation in Geological Repositories in Salt Formations

    Science.gov (United States)

    Xiong, Y.; Deng, H.; Nemer, M. B.; Johnsen, S.

    2009-12-01

    MgO (bulk, pure MgO corresponding to the mineral periclase) is the only engineered barrier certified by the Environmental Protection Agency for emplacement in the Waste Isolation Pilot Plant (WIPP) in the US, and an Mg(OH)2-based engineered barrier (bulk, pure Mg(OH)2 corresponding to brucite) is to be employed in the Asse repository in Germany. Both the WIPP and the Asse are located in salt formations. The WIPP is a U.S. Department of Energy geological repository being used for the permanent disposal of defense-related transuranic waste (TRU waste). The repository is 655 m below the surface, and is situated in the Salado Formation, a Permian salt bed mainly composed of halite, and of lesser amounts of polyhalite, anhydrite, gypsum, magnesite, clays and quartz. The WIPP Generic Weep Brine (GWB), a Na-Mg-Cl dominated brine, is associated with the Salado Formation. The previous vendor for MgO for the WIPP was Premier Chemicals and the current vendor is Martin Marietta Materials. Experimental studies of both Premier MgO and Martin Marietta MgO with the GWB at SNL indicate the formation of magnesium chloride hydroxide hydrate, Mg3Cl(OH)5:4H2O, termed as phase 5. However, this important phase is lacking in the existing thermodynamic database. In this study, the solubility constant of phase 5 is determined from a series of solubility experiments in MgCl2-NaCl solutions. The solubility constant at 25 oC for the following reaction, Mg3Cl(OH)5:4H2O + 5H+ = 3Mg2+ + 9H2O(l) + Cl- is recommended as 43.21±0.33 (2σ) based on the Specific Interaction Theory (SIT) model for extrapolation to infinite dilution. The log K obtained via the Pitzer equations is identical to the above value within the quoted uncertainty. The Gibbs free energy and enthalpy of formation for phase 5 at 25 oC are derived as -3384±2 (2σ) kJ mol-1 and -3896±6 (2σ) kJ mol-1, respectively. The standard entropy and heat capacity of phase 5 at 25 oC are estimated as 393±20 J mol-1 K-1 and 374±19 J mol-1 K

  3. 'DIRECT DISPOSAL'. Comparative study of the radiological risk of the spent fuel and vitrified waste disposals in granite deep geological formation; 'STOCKAGE DIRECT'. Etude comparative du risque radiologique des stockages de combustibles uses et de dechets vitrifies en formation geologique profonde de type granitique

    Energy Technology Data Exchange (ETDEWEB)

    Baudoin, Patrick; Gay, Didier [Departement d' evaluation de surete, Inst. de Protection et de Surete Nucleaire, CEA Centre d' Etudes de Fontenay-aux-Roses, 92 (France)

    1996-09-01

    In order to study the implications of a possibly 'direct disposal' of the spent fuel a working group has been created in 1991. This report gives an evaluation of the radiological impact as well as of the technical and economical characteristics of a generic disposal scenario for untreated spent fuel. The basic scheme implies a temporary storage and, then after an adequate preparation, the disposal in a deep geological formation. This document concerning the evaluation of the radiological impact associated to the geological disposal of the spent fuel constitutes the IPSN's contribution to the report of working group. The solution, as defined by the group, specifies the disposal of multifunctional TSD containers ensuring the Transport, Storage and final Disposal in mine drifts of granite formation. Two values for amounts to be stored were taken into account: one corresponds to 43,500 fuel assemblies of PWR UOX type irradiated at 33,000 MWd.t{sup -1}, while the other, corresponds to 20,400 assemblies of the same type. The radiological risk was evaluated for two distinct evolution scenarios, one supposing the preservation of initial characteristics of the disposal site, the other supposing alterations like those induced by drilling deep water wells in the disposal's vicinity. The individual effective dose were computed for each of these scenarios. Also, a comparison is made between the case of direct disposal of spent fuels and the case of disposal of reprocessed fuels of the same type.

  4. Geological features and reservoir exploration of Shawan formation%沙湾组油气地质特征与勘探实践

    Institute of Scientific and Technical Information of China (English)

    刘传虎; 王学忠

    2011-01-01

    准噶尔盆地沙湾组以岩性油气藏为主,存在油砂体规模较小、油层薄、储层岩性变化快等勘探难题.2005年,排2井在沙湾组钻遇油层,日产油49.6 t,地面原油粘度为1.6 mPa·s.立足实践、大胆开拓促成了沙湾组浅层、稀油、高产岩性油藏的突破,高精度三维地震技术发挥了关键作用.车排子地区具有多油源输导、多层系含油、多类型富集、多品位共存的复式聚集特点和"三层楼"油气成藏模式.沙湾组轻质油藏油砂体形态与振幅属性具有较好的对应关系,能够通过地震属性有效识别油水边界.稀油油浸为含油性下限,粉细砂岩为岩性下限,渗透率0.022 μpm、孔隙度20%为物性下限,油层声波时差大于300μs/m,电阻率大于1.5 Ω·m,电阻增大率大于5.5.已发现沙湾组油藏23个.%Shawan exploration of Juggar Basin was faced with exploration problems of small scale oil sand,thin reservoir and rapid changes in lithology. In 2005, Pai 2 Well in Shawan formation drilled oil layer. It obtains 49.6 t/d industrial oil and the ground oil viscosity is 1.6 mpa · s. Practice and boldly exploiting contributes to Shawan' s breakthrough of shallow, light oil and high lithologic oil reservoir, and high-precision three-dimensional seismic technology has played a crucial role. Chepaizi region of Shawan formation has double-gathered and the "three floors" oil and gas accumulation mode of multiple oil source transporting, multi-line oil, multi-type enrichment and multi-grade coexistence characteristics. Shawan' s light oil sand body shape has a good corresponding relationship with amplitude property, and the oil-water boundary can be identified by seismic attributes. Oil of thin oil is oil lower limit, and powder and fine sandstone is lithologic lower limit, permeability of 0.022 μm2 and porosity of 20 % is lower limit for the properties. Reservoir interval transit time is greater than 300 ,μs/m, resistivity is greater

  5. Geochemistry, geology, and isotopic (Sr, S, and B) composition of evaporites in the Lake St. Martin impact structure: New constraints on the age of melt rock formation

    Science.gov (United States)

    Leybourne, Matthew I.; Denison, Rodger E.; Cousens, Brian L.; Bezys, Ruth K.; Gregoire, D. Conrad; Boyle, Dan R.; Dobrzanski, Ed

    2007-03-01

    We report new Sr, S, and B isotopic data for evaporites (gypsum, anhydrite), carbonates, melt rocks, gneisses, and groundwaters recovered in and around the Lake St. Martin (LSM) impact structure, Interlake Region, Manitoba, Canada. The LSM meteorite impacted Devonian to Ordovician carbonates and sandstones of the eastern Williston Basin, resulting in partial melting of underlying Superior Province (~2.5 Ga) gneisses of the Canadian Shield. Overlying the LSM melt rocks are red beds and evaporites (anhydrite/gypsum/glauberite) previously inferred to have been deposited during the Jurassic. The 87Sr/86Sr (lowest values cluster at 0.70836) and δ 34SCDT (+23.7 +/- 0.9‰) of the evaporites, combined with B isotope compositions of associated groundwaters (δ 11BNBS951 = +25 to +28‰), are consistent with evaporite deposition within the impact structure near the edge of an ocean-connected salina. The establishment of a marine origin for the evaporites offers a method of age assignment using the secular variation of S and Sr isotopes in seawater. Comparison of Sr and S isotope results with the seawater curves precludes Jurassic deposition for the evaporites or correlation with Watrous and Amaranth formation evaporites, previously considered correlative with those at LSM. The lowest Sr and mean of S isotope values from the LSM evaporites are similar to seawater in the latest Devonian, consistent with conodonts recovered from carbonate breccia overlying melt rocks, and we suggest this as an alternative age of the evaporites. Data presented here preclude a Jurassic age for the evaporites and therefore for the impact event.

  6. General theory of engineering (physical) geology. Obshchaya teoriya inzhenernoy (fitzicheskoy) geologii

    Energy Technology Data Exchange (ETDEWEB)

    Bondarik, G.K.

    1981-01-01

    Properties of the geological medium and conclusions about the geosystem are examined. Studies are made of the elements in the geological structure. Classifications are presented for geosystem soils, exogenous and geological processes, new definitions of formation and correct criteria for isolating it. Elements are covered of the general exogenous geological processes. Requirements for engineering-geological forecasting are examined in light of the systems approach and the theory of variability in the properties of the geological medium.

  7. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20101892 Guo Hongjun (Tianjin Geological Exploration General Survey,Tianjin 300181,China);Lin Xiaohui The Precambrian Geological Characteristics of Kigoma-Mpanda Region,Tanzania and the New Data of U-Pb Age Determination on Zircon

  8. Geologic spatial analysis

    Energy Technology Data Exchange (ETDEWEB)

    Thiessen, R.L.; Eliason, J.R.

    1989-01-01

    This report describes the development of geologic spatial analysis research which focuses on conducting comprehensive three-dimensional analysis of regions using geologic data sets that can be referenced by latitude, longitude, and elevation/depth. (CBS)

  9. Geological Services Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — Researchers use computed tomography (CT) scanners at NETL’s Geological Services Laboratory in Morgantown, WV, to peer into geologic core samples to determine how...

  10. Geophysics & Geology Inspected.

    Science.gov (United States)

    Neale, E. R. W.

    1981-01-01

    Summarizes findings of a recently published report of the Canadian Geoscience Council, which includes the following topics regarding college geology: facilities; teaching; undergraduate enrollments; postgraduate enrollments; geologic research; and integration of Canadian geoscience with other countries. (CS)

  11. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20081140 Cheng Peng(State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,CAS,Xi’an 710075,China);Zhou Weijian Advances in Radiocarbon Dating Researches in the Loess-Paleosol Sequences(Marine Geology & Quaternary Geology,ISSN0256-1492,CN37-

  12. The geology of Libya

    Energy Technology Data Exchange (ETDEWEB)

    Salem, M.J.; Busrewil, M.T. (eds.)

    1981-01-01

    This book includes 75 of the papers presented at the Second Symposium of Geology of Libya, held in Tripoli in September 1978. The papers are grouped into seven parts: stratigraphy; biostratigraphy and paleontology; sedimentation and petroleum geology; hydrogeology; geomorphology and Quaternary geology; tectonics and geophysics; geochemistry, mineralogy, and ore deposits. Petroleum exploration prompted many of the papers in this volume. (JMT)

  13. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20132178 Chen Hongjun(Guangzhou Marine Geological Survey,MLR,Guangzhou 510760,China);Cai Guanqiang Features of Canyon Morphology and Their Origin in the Shenhu Area,Northern Slope of the South China Sea(Marine Geology&Quaternary Geology,ISSN0256-1492,CN37-1117/P,32(5),2012,p.19-26

  14. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151119Cui Zhengke(No.1 Marine Geological Investigation Party,Shanghai Offshore Petroleum Bureau,SINOPEC,Shanghai201208,China);Yang Wenda Late Quaternary Sequence Stratigraphy and Sedimentary Environment of East China Sea Continental Shelf(Marine Geology&Quaternary; Geology,ISSN0256-1492,CN37-1117/P,34(4),

  15. Advanced Technologies for Monitoring CO2 Saturation and Pore Pressure in Geologic Formations: Linking the Chemical and Physical Effects to Elastic and Transport Properties

    Energy Technology Data Exchange (ETDEWEB)

    Mavko, G.; Vanorio, T.; Vialle, S.; Saxena, N.

    2014-03-31

    advection: because of an efficient mass transfer of reactants and products, the fluid remains acidic, far from thermodynamical equilibrium and the dissolution of calcite is important. These conclusions are consistent with the lab observations. Sandstones from the Tuscaloosa formation in Mississippi were also subjected to injection under representative in situ stress and pore pressure conditions. Again, both P- and S-wave velocities decreased with injection. Time-lapse SEM images indicated permanent changes induced in the sandstone microstructure by chamosite dissolution upon injection of CO2-rich brine. After injection, the sandstone showed an overall cleaner microstructure. Two main changes are involved: (a) clay dissolution between grains and at the grain contact and (b) rearrangement of grains due to compaction under pressure Theoretical and empirical models were developed to quantify the elastic changes associated with injection. Permanent changes to the rock frame resulted in seismic velocity-porosity trends that mimic natural diagenetic changes. Hence, when laboratory measurments are not available for a candidate site, these trends can be estimated from depth trends in well logs. New theoretical equations were developed to predict the changes in elastic moduli upon substitution of pore-filling material. These equations reduce to Gassmann’s equations for the case of constant frame properties, low seismic frequencies, and fluid changes in the pore space. The new models also predict the change dissolution or precipitation of mineral, which cannot be described with the conventional Gassmann theory.

  16. Map Service Showing Geology and Geologic Provinces of South Asia

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The geology data set for this map includes arcs, polygons, and labels that outline and describe the general geologic age and rock type for South Asia. The geologic...

  17. Geological evolution and analysis of confirmed or suspected gas hydrate localities: Volume 10, Basin analysis, formation and stability of gas hydrates of the Aleutian Trench and the Bering Sea

    Energy Technology Data Exchange (ETDEWEB)

    Krason, J.; Ciesnik, M.

    1987-01-01

    Four major areas with inferred gas hydrates are the subject of this study. Two of these areas, the Navarin and the Norton Basins, are located within the Bering Sea shelf, whereas the remaining areas of the Atka Basin in the central Aleutian Trench system and the eastern Aleutian Trench represent a huge region of the Aleutian Trench-Arc system. All four areas are geologically diverse and complex. Particularly the structural features of the accretionary wedge north of the Aleutian Trench still remain the subjects of scientific debates. Prior to this study, suggested presence of the gas hydrates in the four areas was based on seismic evidence, i.e., presence of bottom simulating reflectors (BSRs). Although the disclosure of the BSRs is often difficult, particularly under the structural conditions of the Navarin and Norton basins, it can be concluded that the identified BSRs are mostly represented by relatively weak and discontinuous reflectors. Under thermal and pressure conditions favorable for gas hydrate formation, the relative scarcity of the BSRs can be attributed to insufficient gas supply to the potential gas hydrate zone. Hydrocarbon gas in sediment may have biogenic, thermogenic or mixed origin. In the four studied areas, basin analysis revealed limited biogenic hydrocarbon generation. The migration of the thermogenically derived gases is probably diminished considerably due to the widespread diagenetic processes in diatomaceous strata. The latter processes resulted in the formation of the diagenetic horizons. The identified gas hydrate-related BSRs seem to be located in the areas of increased biogenic methanogenesis and faults acting as the pathways for thermogenic hydrocarbons.

  18. OneGeology: Making the World’s Geological Map Data Accessible Online

    Science.gov (United States)

    Broome, H.; Jackson, I.; Robida, F.; Thorleifson, H.

    2009-12-01

    OneGeology (http://onegeology.org) is a successful international initiative of the geological surveys of the world and the flagship project of the ‘International Year of Planet Earth’. Its aim is to provide dynamic web access to geological map data covering the world, creating a focus for accessing geological information for everyone. Thanks to the enthusiasm and support of participating nations the initiative has progressed rapidly and geological surveys and the many users of their data are excited about this ground-breaking project. Currently 10 international geoscience organizations have endorsed the initiative and more than 109 countries have agreed to participate. OneGeology works with whatever digital format is available in each country. The target scale is 1:1 million, but the project is pragmatic and accepts a range of scales and the best available data. The initiative recognizes that different nations have differing abilities to participate and transfer of know-how to those who need it is a key aspect of the approach. A key contributor to the success of OneGeology has been its utilization of the latest new web technology and an emerging data exchange standard for geological map data called GeoSciML. GeoSciML (GeoScience Markup Language) is a schema written in GML (Geography Markup Language) for geological data. GeoSciML has the ability to represent both the geography (geometries e.g. polygons, lines and points) and geological attribution in a clear and structured format. OneGeology was launched March 2007 at the inaugural workshop in Brighton England. At that workshop the 43 participating nations developed a declaration of a common objective and principles called the “Brighton Accord” (http://onegeology.org/what_is/accord.html) . Work was initiated immediately and the resulting OneGeology Portal was launched at the International Geological Congress in Oslo in August 2008 by Simon Winchester, author of “The Map that Changed the World”. Since the

  19. Preliminary Geologic Characterization of West Coast States for Geologic Sequestration

    Energy Technology Data Exchange (ETDEWEB)

    Larry Myer

    2005-09-29

    Characterization of geological sinks for sequestration of CO{sub 2} in California, Nevada, Oregon, and Washington was carried out as part of Phase I of the West Coast Regional Carbon Sequestration Partnership (WESTCARB) project. Results show that there are geologic storage opportunities in the region within each of the following major technology areas: saline formations, oil and gas reservoirs, and coal beds. The work focused on sedimentary basins as the initial most-promising targets for geologic sequestration. Geographical Information System (GIS) layers showing sedimentary basins and oil, gas, and coal fields in those basins were developed. The GIS layers were attributed with information on the subsurface, including sediment thickness, presence and depth of porous and permeable sandstones, and, where available, reservoir properties. California offers outstanding sequestration opportunities because of its large capacity and the potential of value-added benefits from enhanced oil recovery (EOR) and enhanced gas recovery (EGR). The estimate for storage capacity of saline formations in the ten largest basins in California ranges from about 150 to about 500 Gt of CO{sub 2}, depending on assumptions about the fraction of the formations used and the fraction of the pore volume filled with separate-phase CO{sub 2}. Potential CO{sub 2}-EOR storage was estimated to be 3.4 Gt, based on a screening of reservoirs using depth, an API gravity cutoff, and cumulative oil produced. The cumulative production from gas reservoirs (screened by depth) suggests a CO{sub 2} storage capacity of 1.7 Gt. In Oregon and Washington, sedimentary basins along the coast also offer sequestration opportunities. Of particular interest is the Puget Trough Basin, which contains up to 1,130 m (3,700 ft) of unconsolidated sediments overlying up to 3,050 m (10,000 ft) of Tertiary sedimentary rocks. The Puget Trough Basin also contains deep coal formations, which are sequestration targets and may have

  20. U.S. Geological Survey Geologic Carbon Sequestration Assessment

    Science.gov (United States)

    Warwick, P. D.; Blondes, M. S.; Brennan, S.; Corum, M.; Merrill, M. D.

    2012-12-01

    The Energy Independence and Security Act of 2007 authorized the U.S. Geological Survey (USGS) to conduct a national assessment of potential geological storage resources for carbon dioxide (CO2) in consultation with the U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency (EPA) and State geological surveys. To conduct the assessment, the USGS developed a probability-based assessment methodology that was extensively reviewed by experts from industry, government and university organizations (Brennan et al., 2010, http://pubs.usgs.gov/of/2010/1127). The methodology is intended to be used at regional to sub-basinal scales and it identifies storage assessment units (SAUs) that are based on two depth categories below the surface (1) 3,000 to 13,000 ft (914 to 3,962 m), and (2) 13,000 ft (3,962 m) and greater. In the first category, the 3,000 ft (914 m) minimum depth of the storage reservoir ensures that CO2 is in a supercritical state to minimize the storage volume. The depth of 13,000 ft (3,962 m) represents maximum depths that are accessible with average injection pressures. The second category represents areas where a reservoir formation has potential storage at depths below 13,000 ft (3,962 m), although they are not accessible with average injection pressures; these are assessed as a separate SAU. SAUs are restricted to formation intervals that contain saline waters (total dissolved solids greater than 10,000 parts per million) to prevent contamination of protected ground water. Carbon dioxide sequestration capacity is estimated for buoyant and residual storage traps within the basins. For buoyant traps, CO2 is held in place in porous formations by top and lateral seals. For residual traps, CO2 is contained in porous formations as individual droplets held within pores by capillary forces. Preliminary geologic models have been developed to estimate CO2 storage capacity in approximately 40 major sedimentary basins within the United States. More than

  1. Geologic mapping of Europa

    Science.gov (United States)

    Greeley, R.; Figueredo, P.H.; Williams, D.A.; Chuang, F.C.; Klemaszewski, J.E.; Kadel, S.D.; Prockter, L.M.; Pappalardo, R.T.; Head, J. W.; Collins, G.C.; Spaun, N.A.; Sullivan, R.J.; Moore, Johnnie N.; Senske, D.A.; Tufts, B.R.; Johnson, T.V.; Belton, M.J.S.; Tanaka, K.L.

    2000-01-01

    , rough inner, and annular massif) and exterior (continuous ejecta) subunits. Structural features and landforms are shown with conventional symbols. Type localities for the units are identified, along with suggestions for portraying the features on geological maps, including colors and letter abbreviations for material units. Implementing these suggestions by the planetary mapping community would facilitate comparisons of maps for different parts of Europa and contribute to an eventual global synthesis of its complex geology. On the basis of initial mapping results, a stratigraphic sequence is suggested in which ridged plains form the oldest unit on Europa, followed by development of band material and individual ridges. Band materials tend to be somewhat older than ridges, but in many areas the two units formed simultaneously. Similarly, the formation of most chaos follows the development of ridged plains; although chaos is among the youngest materials on Europa, some chaos units might have formed contemporaneously with ridged plains. Smooth plains generally embay all other units and are late-stage in the evolution of the surface. C1 craters are superposed on ridged plains but are crosscut by other materials, including bands and ridges. Most c2 craters postdate all other units, but a few c2 craters are cut by ridge material. C3 craters constitute the youngest recognizable material on Europa. Copyright 2000 by the American Geophysical Union.

  2. Hanford Site Guidelines for Preparation and Presentation of Geologic Information

    Energy Technology Data Exchange (ETDEWEB)

    Lanigan, David C.; Last, George V.; Bjornstad, Bruce N.; Thorne, Paul D.; Webber, William D.

    2010-04-30

    A complex geology lies beneath the Hanford Site of southeastern Washington State. Within this geology is a challenging large-scale environmental cleanup project. Geologic and contaminant transport information generated by several U.S. Department of Energy contractors must be documented in geologic graphics clearly, consistently, and accurately. These graphics must then be disseminated in formats readily acceptable by general graphics and document producing software applications. The guidelines presented in this document are intended to facilitate consistent, defensible, geologic graphics and digital data/graphics sharing among the various Hanford Site agencies and contractors.

  3. “同一个地质”计划的地质图空间数据网络共享研究——以中国1:100万MapGIS格式的地质图数据为例%Research on Sharing of Geological Map Spacial Data Network under the “OneGeology” Project:Taking China 1 ∶ 1M Geological Map Data in MapGIS Format as an Example

    Institute of Scientific and Technical Information of China (English)

    韩坤英; 庞健峰; 逯永光; 丁孝忠; 范本贤; 剧远景; 王震洋

    2011-01-01

    “同一个地质”(OneGeology)计划是一项旨在建立全球大约1∶100万比例尺的地质图数据库,使地质图数据可以在互联网上共享的国际合作计划.“OneGeology”计划是一个基于WebGIS技术的分布式系统,每个提供数据的组织者在自己的Web服务器上管理数据,“OneGeology”门户网站和每台Web服务器进行联接并可以显示这些信息.本文以构建中国1 ∶ 100万地质图网络地图服务(WMS)为例,研究了MapGIS格式的数据实现WMS网络地图服务的方法、流程.对此,本文选择了开源软件MapServer WebGIS平台和Apache Web服务器实现WMS服务.MapServer可以发布Shape文件,因此需要将MapGIS文件转换为ArcGIS的Shape文件.由于系统库不能跨平台使用,必须在ArcGIS平台下建立中国1∶100地质图系统库,系统库包括Point(点)、Line(线)、Polygon(面)三种符号类型,并根据属性信息重新对空间图形数据进行符号化.MapServer通过Mapfile配置文件定制网络服务,该配置文件是地质图数据发布的核心内容,文件内容包括地图服务的数据源、数据输出格式、符号化方式、元数据信息等,采用文本方式存储.最后,通过在“OneGeology”门户网站注册,提供网络地质图服务.%"OneGeology" is an international cooperative project which makes it accessible to share the geological map database on the internet aiming at creating a global geological map database at the scale about 1:1000 000. "OneGeology" system is a distributional system based on WebGIS technology. Every data provider can manage their data on their own Web server. The "OneGeology" portal accesses all of distributed web servers and displays the information. In this article, we took setting up of China 1:1000 000 geological map Web Map Service (WMS) as an examlpe, and implemented the methods and flow of WMS based on the research on MapGIS formate data. There are multi-methods to implement WMS. We used open

  4. 北羌塘盆地索瓦组上段的时代、古气候及石油地质特征%Geological Age, Paleoclimate and Petroleum Geological Characteristics of the Upper Part of the Suowa Formation in the North Qiangtang Basin

    Institute of Scientific and Technical Information of China (English)

    曾胜强; 王剑; 陈明; 付修根; 吴滔; 熊兴国

    2012-01-01

    索瓦组上段是羌塘盆地演化晚期的一套潮坪—潟湖相沉积,分布于北羌塘盆地中部.通过对索瓦组上段区域地层对比,发现索瓦组上段在盆地东部、西部和南部的岩性变化较大,海相油页岩的出露地仅分布于北羌塘坳陷南部胜利河—长蛇山—托纳木一线的局限海湾—潟湖的边缘带,其形成明显受到了古地理条件的控制.根据索瓦组上段以及其下伏地层产出的生物化石组合,并结合油页岩的Re-Os同位素年龄,认为索瓦组上段的时代可能为早白垩世.对该组产出的孢粉化石组合和硅化木分析表明,索瓦组上段在沉积早期和晚期的古气候条件发生了明显的变化,早期为温暖和湿润气候,而晚期为半干旱—干旱气候,这种垂向上的古气候变化特征不仅仅局限于胜利河地区,可能在整个北羌塘盆地都普遍存在.索瓦组上段发育的油页岩及其上部膏岩沉积组合的发现,对于评价羌塘盆地演化晚期的石油地质条件具有重要的意义.%The upper part of the Suowa Formation in the central district of the North Qiangtang depression is the sediment during the late-stage evolution of the Qiangtang basin, which deposits in tidal flat-lagoonal environment. By strata correlation of the upper part of the Suowa Formation, it is found that its lithology is different in the eastern, western and southern areas, and the places where the oil shale exposed only aligned around the epi-continental restricted gulf-lagoon areas (e. G. Shengli River area, Changshe Mountain area and Tuolamu area) in the southern margins of the North Qiangtang basin. The deposition of the oil shale is obviously controlled by differential palaeotopography. Based on the fossil assemblages in the upper part of the Suowa Formation and its underlying strata, and combined with the Re-Os dating of the Shengli River oil shale, the geological age of the upper part of the Suowa Formation is suggested to be

  5. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072053 Bao Qingzhon(Shenyang Institute of Geology and Mineral Resources,China Geological Survey,Shenyang,Liaoning 110032,China);Zhang Changjie Carboniferous-Permian Marine Lithostratigraphy and Sequence Stratigraphy in Xi Ujimqin Qi,Southeastern Inner Mongolia,China(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,25(5),2006,p.572-579,4 illus.,2 tables,26 refs.,with English abstract)

  6. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20082513 Chen Guocheng(State Key Labo- ratory of Marine Geology,Tongji University, Shanghai 200092,China);Zheng Hongbo Sedimentary Records of Volcanic Activities in the South China Sea over the Past 480 ka (Marine Geology & Quaternary Geology, ISSN0256—1492,CN37—1117/P,27(4), 2007,p.69—76,4 illus.,1 table,25 refs., with English abstract) Key words:sedimentary sequence,South China Sea

  7. Hong Kong Geological Survey

    Institute of Scientific and Technical Information of China (English)

    R J Sewell

    2007-01-01

    @@ History and objectives The Hong Kong Geological Survey(HKGS) was created on 5 May,1982,wimin the then Engineering Development Department of the Hong Kong Govemment.The initial objective was to carry out a new geological survey of the Territory at 1∶20,000 scale.This followed recognition of an urgent need to produce high quality geological maps at a large scale with sufficient detail to facilitate physical planning and land use management of Hong Kong.

  8. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20081118 Bai Long(Guizhou Academy of Geology Surveying,Guiyang 550005,Guizhou,China);Shi Yuanhua Discovery of Permian Strata and Its Significance in the Mayidang Area,Yiwu County,Xinjiang(Guizhou Geology,ISSN1000-5943,CN52-1059/P,24(2),2007,p.134-137,141,3 illus.,9 refs.)Key words:Upper Permian,XinjiangIn the survey of regional geology and minera

  9. GEOLOGI KAMPUS TEMBALANG

    Directory of Open Access Journals (Sweden)

    Wahju Krisna H

    2012-02-01

    Full Text Available Geological conditions at Tembalang areas and surround, Semarang, as a Undulating – Hillockymorphological. That’s can be representation lithological and structural conditions. This surveysused the Geoelectrical sounding and combined with geological surface mapping. There are 15points sounding of Geoelectrical, after interpreted with geological surface mapping, can beconclusion the Breccias lithologic overlay on the upper of Limestones lithologic and finding thereverse fault in the part north of areas survey.

  10. HYDROGEOLOGY & ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091306 Dong Hengbi(Geological Survey of Shaanxi Province,Xi’an 710054,China);Hu Xuesheng Geological Setting of Geotechnical Erosion in the Helong Portion at the Middle Reaches of Yellow River(Geology of Shaanxi,ISSN1001-6996,CN61-1150/ P,26(1),2008,p.69-75,4 refs.,with English abstract) Key words:soil erosion,Yellow River

  11. Geology of the Dolomites

    Institute of Scientific and Technical Information of China (English)

    AlfonsoBosellini; PieroGianolla; MarcoStefani

    2003-01-01

    The Dolomites region is a spectacularly exposed portion of the Southern Alps, a northern Italian chain derived from the comparatively gentle deformation of the Tethyan passive continental margin of Adria. The regionhad an active Permo-Jurassic tectono-magmatic evolu-tion, leading from Permian magmatism, through a Mid-die Triassic episode offast subsidence and volcanism, to the Jurassic oceanic break-up. Although the sedimentary succession ranges in age from Middle Permian to Creta-ceous, the geological landscape is largely dominated by the majestic Triassic carbonates, making the area a clas-sical one for the early Mesozoic stratigraphy. Particu-larly noteworthy are the Anisian to Carnian carbonate platforms, recording an evolution from regional muddy banks to isolated high-relief builduos. The hlline of the various basins and the development of a last generation of regional peritidal platform followed. The carbonate platforms of the Dolomites bear witness to a remarkable set of changes in the carbonate production and to signif-icant palaeoclimatic fluctuations,from arid to moist con-difions and vice versa; a great range of margin and slope depositional styles is therefore recorded. Alpine tectonic shortening strongly affected the area, with a first Eocenede formation, followed by later Neogene overthrusting and strike-slip movements.

  12. Alaska geology revealed

    Science.gov (United States)

    Wilson, Frederic H.; Labay, Keith A.

    2016-11-09

    This map shows the generalized geology of Alaska, which helps us to understand where potential mineral deposits and energy resources might be found, define ecosystems, and ultimately, teach us about the earth history of the State. Rock units are grouped in very broad categories on the basis of age and general rock type. A much more detailed and fully referenced presentation of the geology of Alaska is available in the Geologic Map of Alaska (http://dx.doi.org/10.3133/sim3340). This product represents the simplification of thousands of individual rock units into just 39 broad groups. Even with this generalization, the sheer complexity of Alaskan geology remains evident.

  13. Acquisition and processing logs maintained by Alpine Ocean Seismic Survey, Inc., during U.S. Geological Survey Field Activity 2014-072-FA offshore of southern Long Island, NY in 2014, as part of a collaborative U.S. Army Corp of Engineers and U.S. Geological Survey mapping effort (Excel spreadsheet, PDF, and Microsoft word formats)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Hurricane Sandy, the largest storm of historical record in the Atlantic basin, severely impacted southern Long Island, New York in October 2012. In 2014, the U.S....

  14. Geology and geological engineering at Syncrude

    Energy Technology Data Exchange (ETDEWEB)

    O' Donnell, N.

    1988-01-01

    This paper outlines the geology of the Athabasca oil sand deposit and describes the activities of the Mine Geology Section of Syncrude Canada, which operates an oil sand mine in that deposit. The Section serves the mine by providing information in support of a variety of operating functions. It is composed of five specialized teams, each one concerned with accurate, detailed data of practical value. Recognition of the unique geological and geotechnical characteristics of each portion of the base mine is reflected in the approach to the work. The Highwall Mapping and Geological Interpretation Team supports three mine planning groups, geotechnical engineering and dragline operations. Ore grading supplies reserve quality and quantity data to planners and to extraction technical staff covering terms ranging from daily to 25 years. The Overburden and Granular Resources Team provides overburden engineering with the information needed for planning of stripping operations, and ensure valuable sand and gravel reserves are identified for mine haul roads and other construction needs. The Hydrogeology and Groundwater Team supports the depressurization operation and environmental monitoring of tailings operations in conjunction with Environmental Affairs. The Drill Programs Team collects data which the other four teams utilize in the course of carrying out their responsibilities. 30 refs., 14 figs.

  15. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141014Wang Hairan(State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi’an710069,China);Zhao Hongge Theory and Application of Zircon U-Pb Isotope Dating Technique(Geology and Resources,ISSN1671-1947,CN21-1458/P,22(3),2013,p.229

  16. Interpreting Urban Geology.

    Science.gov (United States)

    Hannibal, Joseph Timothy; Schmidt, Mark Thomas

    1991-01-01

    Describes field trips to urban locations for geological instruction. The program was developed by the Cleveland Museum of Natural History. Authors claim these field trips have been an effective and enjoyable way of conveying a wide variety of geological information to participants at all levels and backgrounds and have created favorable publicity.…

  17. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20150652 Jiang Yuxuan(Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,Ocean University of China,Qingdao 266100,China);Xing Lei Study on the Degradation of Marine Sedimentary Organic Matter and Model Development(Marine Geology&Quaternary; Geology,ISSN0256-1492,CN37-1117/P,34(4),

  18. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20152571 Bai Ping(Guizhou Academy of Geologic Survey,Guiyang 550005,China);Xiao Jiafei Sequence Stratigraphy and Sedimentary Environment of Early Cambrian in ZunyiDafang Area of Northwest Guizhou Province(Guizhou Geology,ISSN1000-5943,CN52-1059/P,31(4),2014,p.291-296,272,3

  19. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20040593 A Chengye (Qinghao Institute of Geological Survey, Xinjing, Qinghai); Wang Yizhi Disintegration of the Wanbaogou Group and Discovery of Early Cambrian Strata in the Eastern Kunlun Area, Xinjiang, China (Geology in China, ISSN 1000 -3657, CN11-1167/P, 30(2), 2003, p. 199 - 206, 6 illus. , 2 tables, 15 refs. , with English abstract)

  20. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112116 Gao Changlin (Wuxi Research Institute of Petroleum Geology,SINOPEC,- , Wuxi 214151,China);Huang Zeguang On Study of Paleo-Oceanology in Orogenic Belts (Petroleum Geology & Experiment, ISSN1001-6112,CN32-1151/TE,32(5), 2010,p.409-414,419,3illus.,1table,34 refs.)

  1. Radiometric Dating in Geology.

    Science.gov (United States)

    Pankhurst, R. J.

    1980-01-01

    Described are several aspects and methods of quantitatively measuring geologic time using a constant-rate natural process of radioactive decay. Topics include half lives and decay constants, radiogenic growth, potassium-argon dating, rubidium-strontium dating, and the role of geochronology in support of geological exploration. (DS)

  2. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20042213 Chen Qinghua (Department of Geology,Northwest University, Xi’an, Shaanxi); Liu Chiyang The Mathematical Representations and Their Significance of Geological Age with Milankovitch Theory (Journal of Northwest University (Natural Science Edition), ISSN1000 - 274X, CN61 -1072/N, 33(5), 2003, p. 599-602, 27 refs. )

  3. Ship's log recorded during U.S. Geological Survey field activity 2012-005-FA conducted in Baltimore, Washington, and Norfolk Canyons in a Microsoft Excel 2010 spreadsheet format

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — A large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since...

  4. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on May 22, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  5. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on May 20, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  6. Coal Fields - COAL_SPRINGFIELD_THICKNESS_IN: Thickness Ranges of the Springfield Coal Member (Petersburg Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Coverage)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  7. BC_seisimages: PNG format images of EdgeTech SB-512i chirp seismic-reflection data collected in May 2012 by the U.S. Geological Survey within the Baltimore Canyon, mid-Atlantic margin

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — A large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since...

  8. NC_seisimages: PNG format images of EdgeTech SB-512i chirp seismic-reflection data collected in May 2012 by the U.S. Geological Survey within the Norfolk Canyon, mid-Atlantic margin

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — A large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since...

  9. Data acquisition logs in PDF format maintained on U.S. Geological Survey Field Activities 2008-007-FA and 2008-037-FA in Great South Bay, Long Island, New York in May and September, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  10. Coal Fields - COAL_SPRINGFIELD_ELEVATION_IN: Elevation Ranges of the Springfield Coal Member (Petersburg Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — A series of reports on coal resources of selected counties in Indiana were published as part of the Special Report series of the Indiana Geological Survey between...

  11. PNG formatted images of EdgeTech 424 seismic-reflection profiles collected by the U.S. Geological Survey in Barnegat Bay, NJ in 2011, 2012, and 2013.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the...

  12. Bottom Photographs in JPEG format acquired using a SEABed Observation and Sampling System (SEABOSS) within Barnegat Bay New Jersey by the U.S. Geological Survey in 2012, and 2013

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the...

  13. Coal Fields - COAL_DANVILLE_THICKNESS_IN: Thickness Ranges of the Danville Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  14. Coal Fields - COAL_HOUCHIN_CREEK_ELEVATION_IN: Elevation Ranges of the Houchin Creek Coal Member (Petersburg Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Coverage)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  15. Coal Fields - COAL_HYMERA_THICKNESS_IN: Thickness Ranges of the Hymera Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1988 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  16. Coal Fields - COAL_COLCHESTER_ELEVATION_IN: Elevation Ranges of the Colchester Coal Member (Linton Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  17. Coal Fields - COAL_DANVILLE_ELEVATION_IN: Elevation Ranges of the Danville Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  18. Coal Fields - COAL_HYMERA_ELEVATION_IN: Elevation Ranges of the Hymera Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  19. Coal Fields - COAL_COLCHESTER_ELEVATION_IN: Elevation Ranges of the Colchester Coal Member (Linton Formation, Pennsylvanian) in West-Central Indiana (Indiana Geological Survey, 1:126,720, Polygon Shapefile)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological...

  20. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on May 19, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  1. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on Sept. 22, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  2. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on May 21, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  3. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on Sept. 24, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  4. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on Sept. 23, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  5. RES2DINV format continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on Sept. 25, 2008

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine...

  6. Field Geology/Processes

    Science.gov (United States)

    Allen, Carlton; Jakes, Petr; Jaumann, Ralf; Marshall, John; Moses, Stewart; Ryder, Graham; Saunders, Stephen; Singer, Robert

    1996-01-01

    The field geology/process group examined the basic operations of a terrestrial field geologist and the manner in which these operations could be transferred to a planetary lander. Four basic requirements for robotic field geology were determined: geologic content; surface vision; mobility; and manipulation. Geologic content requires a combination of orbital and descent imaging. Surface vision requirements include range, resolution, stereo, and multispectral imaging. The minimum mobility for useful field geology depends on the scale of orbital imagery. Manipulation requirements include exposing unweathered surfaces, screening samples, and bringing samples in contact with analytical instruments. To support these requirements, several advanced capabilities for future development are recommended. Capabilities include near-infrared reflectance spectroscopy, hyper-spectral imaging, multispectral microscopy, artificial intelligence in support of imaging, x ray diffraction, x ray fluorescence, and rock chipping.

  7. Geology Before Pluto: Pre-Encounter Considerations

    Science.gov (United States)

    Moore, Jeffrey M.

    2014-01-01

    Pluto, its large satellite Charon, and its four known satellites represent the first trans-Neptunian Kuiper Belt objects populating the outer-most solar system beyond the gas giant planets to be studied in detail from a spacecraft (New Horizons). A complete picture of the solar nebula, and solar system formation cannot be confidently formulated until representatives of this group of bodies at the edge of solar space have been examined. The Pluto system is composed of unique lunar- and intermediate-sized objects that can tell us much about how objects with volatile icy compositions evolve. Modeling of the interior suggests that geologic activity may have been to some degree, and observations of frost on the surface could imply the need for a geologic reservoir for the replenishment of these phases. However, the putative indicators of Pluto's geologic history are inconclusive and unspecific. Detailed examination of Pluto's geologic record is the only plausible means of bridging the gap between theory and observations. In this talk I will examine the potential importance of these tentative indications of geologic activity and how specific spacecraft observations have been designed and used to constrain the Pluto system's geologic history. The cameras of New Horizons will provide robust data sets that should be immanently amenable to geological analysis of the Pluto System's landscapes. In this talk, we begin with a brief discussion of the planned observations by New Horizons' cameras that will bear most directly on geological interpretability. Then I will broadly review major geological processes that could potentially operate of the surfaces of Pluto and its moons. I will first survey exogenic processes (i.e., those for which energy for surface modification is supplied externally to the planetary surface): impact cratering, sedimentary processes (including volatile migration) and the work of wind. I will conclude with an assessment of prospects for endogenic activity

  8. Information Entropy of Palaeocommunity in Geological History

    Institute of Scientific and Technical Information of China (English)

    ZENG Yong; QU Yong-hua; CHEN Wei; WU Cai-fang

    2003-01-01

    As an ecosystem in geological history, palaeocommunity has the essence of thermodynamics. This paper introduces the concept of entropy into the study of the evolution of palaeo-community, and proposes four parameters to represent the structure feature of palaeo-community. This theory is used to calculate the evolution mode of branchipod community of Maokou formation in Liziya area, Huaying Moumtain, Sichuan.

  9. SUBSURFACE PROPERTY RIGHTS: IMPLICATIONS FOR GEOLOGIC CO2 STORAGE

    Science.gov (United States)

    The paper discusses subsurface property rights as they apply to geologic sequestration (GS) of carbon dioxide (CO2). GS projects inject captured CO2 into deep (greater than ~1 km) geologic formations for the explicit purpose of avoiding atmospheric emission of CO2. Because of the...

  10. SUBSURFACE PROPERTY RIGHTS: IMPLICATIONS FOR GEOLOGIC CO2 SEQUESTRATION

    Science.gov (United States)

    The chapter discusses subsurface property rights as they apply to geologic sequestration (GS) of carbon dioxide (CO2). GS projects inject captured CO2 into deep (greater than ~1 km) geologic formations for the explicit purpose of avoiding atmospheric emission of CO2. Because of t...

  11. SUBSURFACE PROPERTY RIGHTS: IMPLICATIONS FOR GEOLOGIC CO2 SEQUESTRATION (PRESENTATION)

    Science.gov (United States)

    The paper discusses subsurface property rights as they apply to geologic sequestration (GS) of carbon dioxide (CO2). GS projects inject captured CO2 into deep (greater than ~1 km) geologic formations for the explicit purpose of avoiding atmospheric emission of CO2. Because of the...

  12. Virtual Field Geologic Trip System

    Institute of Scientific and Technical Information of China (English)

    Jian Wang; Linfu Xue; Xiaojun Zhou

    2003-01-01

    Virtual Field Geologic Trip System (VFGTS) constructed by the technique of visualization can efficiently present geologic field information and widely used in the field of geologic education. This paper introduces the developing thinking of VFGTS and discusses the main implement processes. Building VFGTS mainly includes systemically gathering of field geological data, the building of virtual geological world, and displaying of virtual geologic world and human-computer interaction.

  13. Procedural method for the development of scenarios in the operational phase following closure of final repositories in deep geological formations. Report on the working package 1. Development of the international status of science and technology concerning methods and tools for operational and long-term safety cases; Vorgehensweise bei der Szenarienentwicklung in der Nachverschlussphase von Endlagern in tiefen geologieschen Formationen. Bericht zum Arbeitspaket 1. Weiterentwicklung des internationalen Stands von Wissenschaft und Technik zu Methoden und Werkzeugen fuer Betriebs- und Langzeitsicherheitsnachweise

    Energy Technology Data Exchange (ETDEWEB)

    Uhlmann, Stephan

    2016-09-15

    For the disposal of high-level radioactive wastes the disposal in deep geological formations is internationally favored. The safety cases include the scientific, technical, administrative and operational safety analyses and arguments, including the management system. According to IAEA the safety case includes site qualification, the design of the facility, construction and operation including an accident analysis, the closure phase and the post-closure phase. The safety case includes the evaluation of radiological risks for several scenarios. The report covers the methodology of scenario assumption in the post-closure phase of repositories in deep geological formations.

  14. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20141900Lan Xianhong(Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology,Ministry of Land and Resources,Qingdao 266071,China);Zhang Zhixun Geochemical Characteristics of Trace Elements of Sediments from Drillhole SFK-1

  15. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20091213 Deng Xiaodong(State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074,China);Li Jianwei 40Ar/ 39Ar Geochronology of Weathering Crust: Significance,Problems,and Prospect(Geo-

  16. Iowa Bedrock Geology

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — The bedrock geologic map portrays the current interpretation of the distribution of various bedrock stratigraphic units present at the bedrock surface. The bedrock...

  17. HISTORICAL GEOLOGY&STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    20160442Bai Jianke(Xi’an Center of China Geological Survey,Xi’an 710054,China);Chen Junlu The Timing of Opening and Closure of the Mayile Oceanic Basin:Evidence from the Angular Unconformity between the Middle De-

  18. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112482 Bai Ping (Guizhou Academy of Geologic Survey,Guiyang 550005,China); Xiao Jiafei Sediment and Stratum Succession Characteristic of the Last Stage of Late Triassic and Middle Jurassic in Northwest Gui

  19. QUATERNARY GEOLOGY & GEOMORPHOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151144 Chen Jiaojie(Key Laboratory of Marine Sedimentology and Environmental Geology,No.1Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Liu Yanguang Paleoenvironment Evolution of the Lake Khanka since the Last Gla-

  20. QUATERNARY GEOLOGY & GEOMORPHOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20112526Bai Daoyuan (Hunan Institute of Geology Survey,Changsha 410011,China); Liu Bo Quaternary Tectonic-Sedimentary Characteristics and Environmental Evolution of Linli Sag,Dongting Basin (Journal of

  1. GeologicSoils_SOAG

    Data.gov (United States)

    Vermont Center for Geographic Information — GeologicSoils_SOAG includes a pre-selected subset of SSURGO soil data depicting prime agricultural soils in Vermont. The SSURGO county coverages were joined to the...

  2. Iowa Geologic Sampling Points

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — Point locations of geologic samples/files in the IGS repository. Types of samples include well cuttings, outcrop samples, cores, drillers logs, measured sections,...

  3. Economic Geology and Education

    Science.gov (United States)

    Geotimes, 1971

    1971-01-01

    Presents tabulated data of questionnaire responses from 207 colleges. More than 30 groups of data are included relating to various aspects of geology programs including enrollment, student and faculty data and courses. (PR)

  4. Economic Geology (Oil & Gas)

    Science.gov (United States)

    Geotimes, 1972

    1972-01-01

    Briefly reviews the worldwide developments in petroleum geology in 1971, including exploration, new fields, and oil production. This report is condensed from the October Bulletin of the American Association of Petroleum Geologists. (PR)

  5. Economic Geology (Oil & Gas)

    Science.gov (United States)

    Geotimes, 1972

    1972-01-01

    Briefly reviews the worldwide developments in petroleum geology in 1971, including exploration, new fields, and oil production. This report is condensed from the October Bulletin of the American Association of Petroleum Geologists. (PR)

  6. Economic Geology and Education

    Science.gov (United States)

    Geotimes, 1971

    1971-01-01

    Presents tabulated data of questionnaire responses from 207 colleges. More than 30 groups of data are included relating to various aspects of geology programs including enrollment, student and faculty data and courses. (PR)

  7. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20080006 Chen Xixiang(Hydrogeological and Engineering Geology Prospecting Corporation of Jiangsu Province,Huai’an 223001,China);Wang Xiang Erosion,Siltation and Protection along the Coastal Zone of Yellow Sea in Central Jiangsu Province(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,17(3),2006,p.17-21,25,9 illus.,2 tables,5 refs.)

  8. QUATERNARY GEOLOGY & GEOMORPHOLOGY

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    <正>20050939 An Chengbang (Key Lab. of Western Chinese Environment System, Ministry of Education, Lanzhou University, Lanzhou, Gansu 730000, China); Feng Zhaodong Humid Climate During 9-3. 8 KaBP in the Western Part of Chinese Loess Plateau (Marine Geology & Quaternary Geology, ISSN0256-1492, CN37-1117/P, 24 (3), 2004, p. 111-116, 3 illus. , 1 table, 40 refs. , with English abstract)

  9. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20070002 Cao Guangjie (School of Geography, Nanjing Normal University, Nanjing 210097, China); Wang Jian Sedimentary Characteristics of the Yangtze River’s Paleovalley in Nanjing since the Last Glaciation Maximum (Marine Geology & Quaternary Geology, ISSN0256-1492, CN37-1117/P, 26(1), 2006, p.23-28, 1 illus., 1 table, 16 refs.,with English abstract) Key words: buried channels, Yangtze River, Jiangsu Province

  10. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    <正>20050934 Chen Zhihong (Chinese Academy of Geological Sciences, Beijing 100037, China); Lu Songnian Age of the Fushui Intermediate-Mafic Intrusive Complex in the Qinling Orogen, New Zircon U - Pb and Whole -Rock Sm and Nd Isotope Chronological Evidence (Geological Bulletin of China, ISSN 1671-2552, CN11-4648/P, 23(4), 2004, p. 322-328, 3 illus. , 3 tables, 10 refs. )

  11. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20041584 Cheng Hai (Department of Geology & Geophysics, University of Minnesota, Minneapolis, United States); Lawrence, R. U/Th and U/Pa Dating of Nanjing Man, Jiangsu Province (Geological Journal of China Universities, ISSN 1006 - 7493, CN 32 -1440/P, 9(4), 2003, p. 667-677, 2 illus. , 2 tables, 28 refs. , with English abstract) Key words: Homo erectus, Nanjing, Jiangsu Province

  12. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072068 Duo Ji(Bureau of Geology and Mineral Resources of Tibet Autonomous Region,Lhasa,Tibet 850000);Wen Chunqi Detrital Zircon of 4 100 Ma in Quartzite in Burang,Tibet(Acta Geologica Sinica(English Edition)--Journal of the Geological Society of China,ISSN1000-9515,CN11-2001/P,80(6),2006,p.954-956,2 illus.,1 table,19 refs.)

  13. GEOCHRONOMETRY&ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071262 Gong Gelian(Guangzhou Institute of Geochemistry,CAS,Guangzhou 510064, China)Luminescence Dating for Environ- mental Evolution Study in Terrestrial Land, Deep Sea and Coastal Belts:A Review(Ma- rine Geology & Quaternary Geology,ISSN 0256-1492,CN37-1117/P,26(2),2006, p.133-138,2 illus.,34 refs.,with English abstract) Key words:thermoluminescent dating

  14. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20132601 Cui Yurong(Tianjin Institute of Geology and Mineral Resources,China Geological Survey,Tianjin 300170,China);Zhou Hongying In Situ LA-MC-ICP-MS U-Pb Isotopic Dating of Monazite(Acta Geoscientica Sinica,ISSN0375-5444,CN11-1856/P,33(6),2012,p.865-876,6illus.,4tables,41refs.)Key words:monazite,U-Pb dating

  15. Geologic Mapping of Isabella Quadrangle (V50), Venus

    Science.gov (United States)

    Bleamaster, L. F., III

    2006-03-01

    Geologic Mapping of the Isabella Quadrangle (V50) provides tests of wrinkle ridge and shield formation mechanisms and temporal relations, impact crater-volcanic construct interactions, and structural reactivation.

  16. The geology of Elba Island: an historical introduction

    OpenAIRE

    V. Bortolotti; E.PANDELI; G. PRINCIPI

    2001-01-01

    The studies on the geology of the Elba Island began toward the middle of the 1911 century. The first detailed survey was performed by Lotti for the first edition of the Geological Map of Italy. All the formations were considered autochthonous and pertaining to a single stratigraphic succession. Termier in 1910 introduced the nappe concept in the geology of the Island. At the end of the second world war, the geology of the Island was renewed by the studies of the researchers of the Pisa Univer...

  17. HYDROGEOLOGY&ENGINEERING GEOLOGY (1)HYDROGEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071407 Cai Chunfang(Institute of Geology and Geophysics,Chinese Academy of Sci- ences,Beijing 100029);Peng Licai B,Sr,O and H Isotopic Compositions of Formation Waters from the Bachu Bulge in the Tarim Basin(Acta Geologica Sinica(English Edition)——Journal of the Geological Society of China,ISSN1000-9515,CN11-2001/ P,80(4),2006,p.550-556,7 illus.,1 table,24 refs.) Key words:isotope composition,water-

  18. HYDROGEOLOGY & ENGINEERING GEOLOGY (2)ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>20082639 Bai Jianguang(National Laboratory of Geo—Hazard Prevention and Geo—Envi- ronment Protection,Chengdu University of Technology,Chengdu 610059,China);Xu Qiang Study on Influence Factors of Bank Collapse in the Three Gorges Reservoir with Physical Modeling(The Chinese Journal of Geological Hazard and Control,ISSN1003—8035,CN11—2852/P,18(1),2007,p.90—94,8 illus.,3 tables,5 refs.) Key words:reservoir bank slump,Yangtze River Valley

  19. HYDROGEOLOGY & ENGINEERING GEOLOGY (2)ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071446 Kazue Tazaki(Graduate School of Natural Science and Technology,Kanazawa University,Kakuma,Kanazawa,Ishikawa 920-1192,Japan);Hiroaki Watanabe Hy- drocarbon-Degrading Bacteria and Paraffin from Polluted Seashores 9 Years after the Nakhodka Oil Spill in the Sea of Japan(Acta Geologica Sinica(English Edition)——Jour- nal of the Geological Society of China,ISSN 1000-9515,CN11-2001/P,80(3),2006, p.432-440,6 illus.,54 refs.,with English abstract)

  20. PNG formatted images of EdgeTech 424 seismic-reflection profiles collected by the U.S. Geological Survey in Barnegat Bay, NJ in 2011, 2012, and 2013.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S....

  1. Bottom Photographs in JPEG format acquired using a SEABed Observation and Sampling System (SEABOSS) within Barnegat Bay New Jersey by the U.S. Geological Survey in 2012, and 2013

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S....

  2. Bottom Photographs in JPEG format acquired using a SEABed Observation and Sampling System (SEABOSS) within Barnegat Bay New Jersey by the U.S. Geological Survey in 2012, and 2013

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S....

  3. PNG formatted images of EdgeTech 424 seismic-reflection profiles collected by the U.S. Geological Survey in Barnegat Bay, NJ in 2011, 2012, and 2013.

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S....

  4. Geologic effects of hurricanes

    Science.gov (United States)

    Coch, Nicholas K.

    1994-08-01

    Hurricanes are intense low pressure systems of tropical origin. Hurricane damage results from storm surge, wind, and inland flooding from heavy rainfall. Field observations and remote sensing of recent major hurricanes such as Hugo (1989), Andrew (1992) and Iniki (1992) are providing new insights into the mechanisms producing damage in these major storms. Velocities associated with hurricanes include the counterclockwise vortex winds flowing around the eye and the much slower regional winds that steer hurricane and move it forward. Vectorial addition of theseof these two winds on the higher effective wind speed than on the left side. Coast-parallel hurricane tracks keep the weaker left side of the storm against the coast, whereas coast-normal tracks produce a wide swath of destruction as the more powerful right side of the storm cuts a swath of destruction hundreds of kilometers inland. Storm surge is a function of the wind speed, central pressure, shelf slope, shoreline configuration, and anthropogenic alterations to the shoreline. Maximum surge heights are not under the eye of the hurricane, where the pressure is lowest, but on the right side of the eye at the radius of maximum winds, where the winds are strongest. Flood surge occurs as the hurricane approaches land and drives coastal waters, and superimposed waves, across the shore. Ebb surge occurs when impounded surface water flows seaward as the storm moves inland. Flood and ebb surge damage have been greatly increased in recent hurricanes as a result of anthropogenic changes along the shoreline. Hurricane wind damage occurs on three scales — megascale, mesoscale and microscale. Local wind damage is a function of wind speed, exposure and structural resistance to velocity pressure, wind drag and flying debris. Localized extreme damage is caused by gusts that can locally exceed sustained winds by a factor of two in areas where there is strong convective activity. Geologic changes occuring in hurricanes

  5. Geologic flow characterization using tracer techniques

    Energy Technology Data Exchange (ETDEWEB)

    Klett, R. D.; Tyner, C. E.; Hertel, Jr., E. S.

    1981-04-01

    A new tracer flow-test system has been developed for in situ characterization of geologic formations. This report describes two sets of test equipment: one portable and one for testing in deep formations. Equations are derived for in situ detector calibration, raw data reduction, and flow logging. Data analysis techniques are presented for computing porosity and permeability in unconfined isotropic media, and porosity, permeability and fracture characteristics in media with confined or unconfined two-dimensional flow. The effects of tracer pulse spreading due to divergence, dispersion, and porous formations are also included.

  6. Geología de la Formación Cerro Negro (Cretácico en Isla Livingston: aportes a su geocronología y contenido paleontológico Geology of the Cerro Negro Formation (Cretaceous in Livingston Island: contributions to its geochronology and paleontological content

    Directory of Open Access Journals (Sweden)

    C.A. Parica

    2007-12-01

    Taeniopteris sp. Finalmente, se presentan nuevas edades radimétricas obtenidas sobre piroclastitas, lavas e intrusivos de la Formación Cerro Negro. La unidad piroclástica I fue datada en 125 ± 7 Ma, la unidad piroclástica II (ignimbritas del Cerro Don Carlos en 110 ± 30 Ma (en errocrona, mientras que las andesitas del cerro Usnea fueron datadas en 92 ± 5 Ma. Para las erupciones del cerro Sealer se obtuvieron dos dataciones coincidentes en una edad de 63 ± 2 Ma, y finalmente la manifestación más joven del área, los basaltos del cerro Don Carlos, posee una edad de 32 ± 1 Ma.Byers Peninsula is located on the westernmost part of Livingston Island in the South Shetland Islands. Geologically this peninsula is recognized by the marine and non-marine sedimentary sequences and the Cretaceous-Tertiary volcanism, belonging to the uppermost levels of the Byers Group, named Cerro Negro Formation. The magmatic sequences are divided in two main groups, pyroclastic rocks, divided into five units in the area. The second group of lavas and intrusive rocks placed at Don Carlos Hill, Usnea Plug, Chester Cone, Sealer Hill and Negro Hill. The sedimentary rocks are green clastic rocks (conglomerates, sandstones to mudstones with rhythmic, convolute, thin bedded and crossed structures. The Cerro Negro Formation is related to a fluvial environment with a rain regime, high energy, decreasing in time, the development of lakes and shallow lagoons suitable for a good preservation of the macro and microflora. At the new fosiliferous localities, Rotch Dome, Lomada de las Plantas (Plants Hill, Don Carlos Hill and 904, have been recognized: Araucarites sp., Archangelskya furcata Herbst, Cladophlebis sp., Dictyozamites sp., Elatocladus sp, Phyllopteroides sp., Pseudoctenis sp., Ptyllophyllum menendezii Cantrill, Sphenopteris sp., Eocyathea remesaliae Césari, Sergioa austrina Césari and Taeniopteris sp. Finally some new radiometric ages are presented for the pyroclastics, intrusions and lavas of

  7. Geologic map of Chickasaw National Recreation Area, Murray County, Oklahoma

    Science.gov (United States)

    Blome, Charles D.; Lidke, David J.; Wahl, Ronald R.; Golab, James A.

    2013-01-01

    This 1:24,000-scale geologic map is a compilation of previous geologic maps and new geologic mapping of areas in and around Chickasaw National Recreation Area. The geologic map includes revisions of numerous unit contacts and faults and a number of previously “undifferentiated” rock units were subdivided in some areas. Numerous circular-shaped hills in and around Chickasaw National Recreation Area are probably the result of karst-related collapse and may represent the erosional remnants of large, exhumed sinkholes. Geospatial registration of existing, smaller scale (1:72,000- and 1:100,000-scale) geologic maps of the area and construction of an accurate Geographic Information System (GIS) database preceded 2 years of fieldwork wherein previously mapped geology (unit contacts and faults) was verified and new geologic mapping was carried out. The geologic map of Chickasaw National Recreation Area and this pamphlet include information pertaining to how the geologic units and structural features in the map area relate to the formation of the northern Arbuckle Mountains and its Arbuckle-Simpson aquifer. The development of an accurate geospatial GIS database and the use of a handheld computer in the field greatly increased both the accuracy and efficiency in producing the 1:24,000-scale geologic map.

  8. Planetary Geologic Mapping Handbook - 2010. Appendix

    Science.gov (United States)

    Tanaka, K. L.; Skinner, J. A., Jr.; Hare, T. M.

    2010-01-01

    the USGS now are primarily digital products using geographic information system (GIS) software and file formats. GIS mapping tools permit easy spatial comparison, generation, importation, manipulation, and analysis of multiple raster image, gridded, and vector data sets. GIS software has also permitted the development of projectspecific tools and the sharing of geospatial products among researchers. GIS approaches are now being used in planetary geologic mapping as well. Guidelines or handbooks on techniques in planetary geologic mapping have been developed periodically. As records of the heritage of mapping methods and data, these remain extremely useful guides. However, many of the fundamental aspects of earlier mapping handbooks have evolved significantly, and a comprehensive review of currently accepted mapping methodologies is now warranted. As documented in this handbook, such a review incorporates additional guidelines developed in recent years for planetary geologic mapping by the NASA Planetary Geology and Geophysics (PGG) Program's Planetary Cartography and Geologic Mapping Working Group's (PCGMWG) Geologic Mapping Subcommittee (GEMS) on the selection and use of map bases as well as map preparation, review, publication, and distribution. In light of the current boom in planetary exploration and the ongoing rapid evolution of available data for planetary mapping, this handbook is especially timely.

  9. Geological and Petrographic Characteristics of Kimberlite Pipes

    Directory of Open Access Journals (Sweden)

    N. N. Zinchuk

    2016-12-01

    Full Text Available Studies of the geological structure and petrochemical composition of the Siberian Platform kimberlites indicated complexity, diversity of geological, tectonic, and paleogeographic situations, which must be considered for proper prospecting-exploration for diamonds in each area of investigation. Information about petrochemical composition of potential diatremes, hosting, and overlying sedimentary and magmatic formations is an important prerequisite for prospecting of kimberlite deposits in different geologic-tectonic conditions. The most attention should be paid to typomorphic specific features of primary and secondary minerals of diatremes. Each diamondiferous region is characterized by a certain set of typomorphic associations of kimberlites primary and secondary minerals. The diamonds with ultrabasic association of solid phase inclusions (olivine, chrome-spinel, pyrope, etc. dominate in majority of kimberlite pipes.

  10. The geologic history of Margaritifer basin, Mars

    Science.gov (United States)

    Salvatore, M. R.; Kraft, M. D.; Edwards, Christopher; Christensen, P.R.

    2016-01-01

    In this study, we investigate the fluvial, sedimentary, and volcanic history of Margaritifer basin and the Uzboi-Ladon-Morava (ULM) outflow channel system. This network of valleys and basins spans more than 8000 km in length, linking the fluvially dissected southern highlands and Argyre Basin with the northern lowlands via Ares Vallis. Compositionally, thermophysically, and morphologically distinct geologic units are identified and are used to place critical relative stratigraphic constraints on the timing of geologic processes in Margaritifer basin. Our analyses show that fluvial activity was separated in time by significant episodes of geologic activity, including the widespread volcanic resurfacing of Margaritifer basin and the formation of chaos terrain. The most recent fluvial activity within Margaritifer basin appears to terminate at a region of chaos terrain, suggesting possible communication between surface and subsurface water reservoirs. We conclude with a discussion of the implications of these observations on our current knowledge of Martian hydrologic evolution in this important region.

  11. Geological fakes and frauds

    Science.gov (United States)

    Ruffell, Alastair; Majury, Niall; Brooks, William E.

    2012-02-01

    Some geological fakes and frauds are carried out solely for financial gain (mining fraud), whereas others maybe have increasing aesthetic appeal (faked fossils) or academic advancement (fabricated data) as their motive. All types of geological fake or fraud can be ingenious and sophisticated, as demonstrated in this article. Fake gems, faked fossils and mining fraud are common examples where monetary profit is to blame: nonetheless these may impact both scientific theory and the reputation of geologists and Earth scientists. The substitution or fabrication of both physical and intellectual data also occurs for no direct financial gain, such as career advancement or establishment of belief (e.g. evolution vs. creationism). Knowledge of such fakes and frauds may assist in spotting undetected geological crimes: application of geoforensic techniques helps the scientific community to detect such activity, which ultimately undermines scientific integrity.

  12. Geology at Yucca Mountain

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-05-01

    Both advocates and critics disagree on the significance and interpretation of critical geological features which bear on the safety and suitability of Yucca Mountain as a site for the construction of a high-level radioactive waste repository. Critics believe that there is sufficient geological evidence to rule the site unsuitable for further investigation. Some advocates claim that there is insufficient data and that investigations are incomplete, while others claim that the site is free of major obstacles. We have expanded our efforts to include both the critical evaluations of existing geological and geochemical data and the collection of field data and samples for the purpose of preparing scientific papers for submittal to journals. Summaries of the critical reviews are presented in this paper.

  13. The geology of Ganymede

    Science.gov (United States)

    Shoemaker, E. M.; Lucchitta, B. K.; Wilhelms, D. E.; Plescia, J. B.; Squyres, S. W.

    A broad outline of the geologic history of Ganymede is presented, obtained from a first attempt to map the geology on a global scale and to interpret the characteristics of the observed geologic units. Features of the ancient cratered terrain such as craters and palimpsests, furrows and troughs, are discussed. The grooved terrain is described, including its sulci and cells, and the age relation of these units is considered along with the structure and origin of this terrain. The Gilgamesh Basin and Western Equatorial Basin in the post grooved terrain are treated, as are the bright and dark ray craters and the regolith. The development of all these regions and features is discussed in context. For the regolith, this includes the effect of water migration, sputtering, and thermal annealing. The histories of the ancient cratered terrain, the grooved terrain, and the post grooved terrain are presented.

  14. Geologic map of Mars

    Science.gov (United States)

    Tanaka, Kenneth L.; Skinner, James A.; Dohm, James M.; Irwin, Rossman P.; Kolb, Eric J.; Fortezzo, Corey M.; Platz, Thomas; Michael, Gregory G.; Hare, Trent M.

    2014-01-01

    This global geologic map of Mars, which records the distribution of geologic units and landforms on the planet's surface through time, is based on unprecedented variety, quality, and quantity of remotely sensed data acquired since the Viking Orbiters. These data have provided morphologic, topographic, spectral, thermophysical, radar sounding, and other observations for integration, analysis, and interpretation in support of geologic mapping. In particular, the precise topographic mapping now available has enabled consistent morphologic portrayal of the surface for global mapping (whereas previously used visual-range image bases were less effective, because they combined morphologic and albedo information and, locally, atmospheric haze). Also, thermal infrared image bases used for this map tended to be less affected by atmospheric haze and thus are reliable for analysis of surface morphology and texture at even higher resolution than the topographic products.

  15. ECONOMIC GEOLOGY (2)NONMETALS DEPOSITS

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20071073 Huang Tiedong(No.1 Geological Team of Xinjiang Bureau of Exploration and Mining,Changji,Xinjiang 831100,China) Formation of the Salt Lake and KNO3 Ore in the Kumishi Block-Falling Basin in Xin- jiang(Hydrogeology & Engineering Geology, ISSN1000-3665,CN11-2202/P,32(6), 2005,p.20-24,4 illus.,3 tables,8 refs.) Key words:niter,salt deposits,Xinjiang The Kumishi Basin,a Cenozoic block- falling basin,has been controlled by a dry continental climate and continuously under- went a concentration process due to evapora- tion.The rock salt began to form in the late Pliocene to Pleistocene(35 ka B.P.).The thick rock salt bodies assembled in the late Holocene(4.5 ka B.P.)because of the stable crust and the continuous dry climate.With the evolution into the dry salt lake stage,the brines occurring in the crystals further con- centrated and the liquid-phase KNO3 formed,which is overlain by K-rich rock salt.

  16. Field Geology for Environment Awareness

    Science.gov (United States)

    Andrez, Marilia

    2017-04-01

    The objective of this project is to show the scientific and educational potential of natural environment of Lisbon region through increase of excitement for plate tectonics subjects to high school students. It is expected the students be able to understand the main concepts of the plate tectonics, stratigraphy, paleontology and paleoenvironmental interpretations, explain in the field nearby Lisbon. The richness of Guincho beach geodiversity and "Sintra Syenite Complex" valuate the geological patrimony. Combining these entities and educational purposes will raise awareness to sustainable attitudes favoring the preservation of natural patrimony by the students. The subjects approached in the project are based on the inspection of several outcrops related to the evolution of the Iberian Plate at early Mesozoic period, at several places of geological interest. The landscape of Guincho is dominated by Mesozoic formations that show good conditions paleoenvironmental and geodynamic interpretations associated to the opening of the North Atlantic. Moreover it reveals the environment linked to the magmatic intrusion of the "Sintra Alcaline Complex" at the end of Cretaceous. It is believed the contact with field is crucial to the awareness of young people to subjects that are not daily matters, however important when presented in the light of an urgent society problem such as environment preservation, at all levels by all people.

  17. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111878 Cao Jie(Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China);Zhang Yongsheng Mineralogical Evidences and Significance of Transgression Event in the Cretaceous Basins of Eastern Heilongjiang Province,China(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,29(7),2010,p.1024-1030,8 illus.,2 tables,18 refs.)Key words:Lower Cretaceous,transgression,Heilongjiang ProvinceThe evidences of marine fossils show that multiple different scales of transgression events have occurred in the Cretaceous basins of eastern Heilongjiang Pro

  18. Principles of engineering geology

    Energy Technology Data Exchange (ETDEWEB)

    Attewell, P.B.; Farmer, I.W.

    1976-01-01

    This book discusses basic principles as well as the practical applications of geological survey and analysis. Topics covered include the mechanical and physical response of rocks, rock masses and soils to changes in environmental conditions, and the principles of groundwater flow. The core of the book deals with the collection of geological and technical data, its subsequent analysis, and application to design. The combination of rigorous and detailed discussion of theory and well-illustrated examples made the book an indispensable reference source and ideal course book for both geologists and civil engineers.

  19. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>20111126Ji Honglei(Institute of Hydrogeol-ogy and Environmental Geology,CAGS,Shi-jiazhuang050061,China);Zhao Hua Pre-liminary Study of Re-OSL on Water-De-posited Sediments(Seismology and Geology,ISSN0253-4967,CN11-2192/P,32(2),2010,p.320-326,4illus.,1table,10refs.)Key words:stream sediments,opticalstimulated luminescence dating,HebeiProvinceAccording to measuring the natural TT-OSL signals of the fine-grained quartzfrom both fluvial and lacustrine sediments,the dose recovery experiment and the comparison of the multiple aliquots

  20. Bureau of Economic Geology. 1978 annual report

    Energy Technology Data Exchange (ETDEWEB)

    1978-01-01

    Bureau research programs and projects are designed to address many of the State's major concerns in the areas of geologic, energy, mineral, land, and environmental resouces. Research programs incorporate geologic concepts that will build toward an understanding of a specific resource and its impact on human activities. In addition to resource assessments in uranium, lignite, and geopressured geothermal energy, the Bureau continued research into analysis of governmental policy related to energy. Systemic geologic mapping, coastal studies, basin analysis projects, and investigations in other areas of economic geology further indicate the range of research programs carried forward in 1978. Specifically, research on mineral resources and land resources, coastal studies, hydrogeology, basin studies, geologic mapping, and other research (tektites and meteorites, carboniferous of Texas, depositional environments of the Marble Falls Formation, Central Texas) are reported. The establishment of the Mining and Mineral Resources Research Institute is followed. Contracts and grant support and contract reports are listed. The publications eminating from the Bureau are listed. Services rendered by the Bureau and personnel information are included. (MCW)

  1. The geologic mapping of asteroid Vesta

    Science.gov (United States)

    Williams, D.; Yingst, A.; Garry, B.

    2014-07-01

    the resulting time-stratigraphic system and geologic timescale. Key results from the geologic mapping of Vesta include: 1) surface units are dominated by features and materials produced by two major impact events, the older Veneneia and younger Rheasilvia impacts at the south pole 2) both impacts produced a ridge-and-trough terrain as a tectonic response to the impacts, mapped as the Saturnalia Fossae and the Divalia Fossae Formations, respectively 3) stratigraphic analysis of Vesta's heavily cratered terrains show that portions of the original crust are preserved and predate the Veneneia impact 4) the Marcia impact event marks the beginning of Vesta's final stratigraphic period, including exposure of fresh bright and dark material and preservation of young bright-rayed and dark-rayed craters. We conclude that a geologic mapping campaign, including both global and regional mapping, can be conducted during the limited planetary nominal mission timeline, and is an excellent way to engage younger team members (graduate students and postdocs) in mission data analysis activities.

  2. Chapter 6. Tabular data and graphical images in support of the U.S. Geological Survey National Oil and Gas Assessment-East Texas basin and Louisiana-Mississippi salt basins provinces, Jurassic Smackover interior salt basins total petroleum system (504902), Travis Peak and Hosston formations.

    Science.gov (United States)

    ,

    2006-01-01

    This chapter describes data used in support of the process being applied by the U.S. Geological Survey (USGS) National Oil and Gas Assessment (NOGA) project. Digital tabular data used in this report and archival data that permit the user to perform further analyses are available elsewhere on the CD-ROM. Computers and software may import the data without transcription from the Portable Document Format files (.pdf files) of the text by the reader. Because of the number and variety of platforms and software available, graphical images are provided as .pdf files and tabular data are provided in a raw form as tab-delimited text files (.tab files).

  3. GEOCHRONOMETRY&ISOTOPE; GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151852 Chen Longyao(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing100081,China);Luo Yuling LA-ICP-MS U-Pb Geochronology of Detrital Zircons from the Liuling Group in the South Qinling Tectonic Belt and Its Tectonic

  4. GEOCHRONOMETRY ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20040631 Chen Jiangfeng (School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui) ; Xie Zhi Relationships Between Rb-Sr, Ar - Ar Geochronometers and Oxygen Isotopic Equilibrium of Intrusions from Eastern Anhui Province, China (Geological Journal of China Universities, ISSN 1006 - 7493, CN 32 -

  5. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>20090432 Zhou Shuqing (School of Energy Resources, China University of Geosciences Beijing 100083, China); Huang Haiping Stable Isotopic Records vs. Important Events in Life Evolution and the Concurrent Environment (Geological Review, ISSN0371-5736, CN11-1952, 54(2), 2008, p.225-231, 3 illus., 1 table, 77 refs.)

  6. GEOCHRONOMETRY & ISOTOPE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072750 Huang Sijing(State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China);Pei Changrong Age Calibration for the Boundary between Lower and Middle Triassic by Strontium Isotope Stratigraphy in Eastern Sichuan Province

  7. Geology en Espanol

    Science.gov (United States)

    McGehee, Richard V.

    1973-01-01

    Describes a program in which an introductory geology class was conducted in Spanish at Western Michigan University. Although difficulties were encountered, the author evaluated the program as a great success, and a valuable experience for the person who wants to be effectively bilingual in his profession. (JR)

  8. HYDROGEOLOGY & ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    <正>(1) HYDROGEOLOGY 20051014 Duan Yonghou (China Institute of Geo - Environment Monitoring, Beijing ) ; Wang Jiabin Groundwater Resources and Its Sustainable Development in Tianjin, China ( Hydrogeology & Engineering Geology, ISSN 1000-3665, CN11-2202/P, 31(3), 2004, p. 29 -39, 8 illus. , 7 tables, 8 refs. , with English abstract) Key words: water supply, groundwater resources, Tianjin

  9. HYDROGEOLOGY & ENGINEERING GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>(1) HYDROGEOLOGY20041696 Bian Jinyu (Department of Earth Sciences, Nanjing University, Nanjing, Jiangsu); Fang Rui Analysis of Controlling Factors of Ground water Quality in Yancheng Area, Jiangsu Province, China (Hydrogeolo gy & Engineering Geology, ISSN 1000 -3665, CN11-2202/P, 30(5), 2003, p. 56 - 60, 1 illus. , 4 tables, 5 refs. ) Key words: groundwater quality evaluation, Jiangsu Province

  10. QUATERNARY GEOLOGY & GEOMORPHOLOGY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>20072079 Cui Zhongxie(Yanbian Seismology Bureau of Jilin Province,Yanji,Jilin 133001);Liu Jiaqi Historical Records about the Extensive Eruptions of the Tianchi Volcano in Changbai Mountains during A.D.1014~1019(Geological Review,ISSN0371-5736,CN11-1952,52(5),2006,p.624-627,13 refs.)Key words:eruptions,Changbai Mountains

  11. HISTORICAL GEOLOGY&STRATIGRAPHY;

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151823 Cai Xiyao(Petroleum Exploration and Production Research Institute,SINOPEC,Beijing100083,China);Dou Liwei Classification and Correlation of Cambrian in Eastern Tarim Basin(Petroleum Geology&Experiment;,ISSN1001-6112,CN32-1151/TE,36(5),2014,p.539-545,3illus.,1table,

  12. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20131708 Cai Xiyao(Research Institute of Exploration&Production,SINOPEC,Beijing100083,China);Jin Xianmei The Stratigraphic Classification and Correlation of Jurassic in Caohu Depression,Tarim Basin(Xinjiang Geology,ISSN1000-8845,CN65-1092/P,30(3),2012,p.287-291,2illus.,1table,10refs.)

  13. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>20142287Cao Changqun(State Key Laboratory of Paleobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,CAS,Nanjing 210008,China);Zhang Mingyuan The Permian Capitanian Stratigraphy at the Rencunping Section,Sangzhi County of Hunan Province and Its Environmental Implications

  14. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20042202 Chen Gang (Department of Geology, Northwest University, Xi’an, Shaanxi); Zhao Zhongyuan Natural of Pre-Mesozoic Tectono-Lithostratigraphic Units of North -Huaiyang Belt and Implication for Tectonic Evolution (Journal of Northwest University (Natural Science Edition), ISSN 1000-274X, CN61-1072/N, 33(5), 2003, p. 595 -598, 1 table, 14 refs. )

  15. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>20101833 Cao Ke (State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China);Wang Meng Constraints of Sedimentary Records on Cretaceous Paleoclimate Simulation in China Mainland (Earth Science Frontiers,ISSN1005-2321,CN11-3370/P,16(5),2009,p.29-36,3 illus.,1 table,41 refs.)

  16. HISTORICAL GEOLOGY & STRATIGRAPHY

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正> 20070428 Liu Wenye (Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029) Application of Wavelet Analysis in High-Resolution Sequence Stratigraphic Division (Journal of Geomechanics, ISSN1006-6616, CN11-3672/P, 12(1), 2006, p.64-70, 4 illus., 12 refs.) Key words: sequence stratigraphy, wavelet transform

  17. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>20130639Cui Yingchun ( Key Laboratory of Marine Sedimentology and Environmental Geology , First Institute of Oceanography , State Oceanic Administration , Qingdao 266061 , China ); Shi Xuefa Records of Past 70 Ma Dust Activities in Ferromanganese Crusts from Pacific Ocean (Journal of Jilin University , ISSN1671-5888 , CN22-1343/P

  18. OCEANOGRAPHY & MARINE GEOLOGY

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正>20040917 Dong Rongxin (School of Ocean and Earth Science , Tongji University, Shanghai); Gong Xianglin Types and Features of Modern Coast on Xiaoyang Island, China (Shanghai Geology, ISSN 1004 -230X, CN31-1475/P, 2003(1), p. 17-19, 50, 2 illus. , 1 table, 2 refs. )

  19. Geological and Inorganic Materials.

    Science.gov (United States)

    Jackson, L. L.; And Others

    1989-01-01

    Presents a review focusing on techniques and their application to the analysis of geological and inorganic materials that offer significant changes to research and routine work. Covers geostandards, spectroscopy, plasmas, microbeam techniques, synchrotron X-ray methods, nuclear activation methods, chromatography, and electroanalytical methods.…

  20. Geological impacts on nutrition

    Science.gov (United States)

    This chapter reviews the nutritional roles of mineral elements, as part of a volume on health implications of geology. The chapter addresses the absorption and post-absorptive utilization of the nutritionally essential minerals, including their physiological functions and quantitative requirements....