Sample records for INVESTIGACION GEOLOGICA US (us geological survey)
from WorldWideScience.org

Sample records 1 - 17 shown.



1

The Baraza Slide: Defining its dynamic (Northern Alboran Sea)

Ercilla, Gemma; Estrada, Ferrán; Yenes, Mariano; Casas, David; Alonso, Belén; Farrán, Marcel-li; [SAGAS Team]
2009-05-01

Digital.CSIC (Spain)

2

Structural results for La Palma island using 3-D gravity inversion

Camacho, A. G.; Fernández Torres, José; González Méndez, Pablo José; Rundle, J. B.; Prieto, Juan Francisco; Arjona, Alicia
2009-01-01

Digital.CSIC (Spain)

3

Structural characterization of kerogen in 3.4 Ga Archaean cherts from the Pilbara Craton, Western Australia

Marshall, Craig P.; Love, Gordon D.; Snape, Colin E.; Hill, Andrew C.; Allwood, Abigail C.; Walter, Malcolm R.; Van Kranendonk, Martin J.; Bowden, Stephen A.; Sylva, Sean P.; Summons, Roger E.
2007-05-05

Digital.CSIC (Spain)

4

Rupture lengths and temporal history of significant earthquakes on the offshore and north coast segments of the Northern San Andreas Fault based on turbidite stratigraphy

Goldfinger, Chris; E. Morey, Ann; Hans Nelson, C.; Gutiérrez-Pastor, Julia; E. Johnson, Joel; Karabanov, Eugene; Chaytor, Jason D.; Ericsson, Andrew; Scientific Party, Shipboard
2007-02-15

Digital.CSIC (Spain)

5

Remote Sensing in BOREAS: Lessons learned

Gamon, J. A.; Huemmrich, K. F.; Peddle, D. R.; Chen, J.; Fuentes, D.; Hall, F. G.; Kimball, J. S.; Goetz, S.; Gu, J.; McDonald, K. C.; Miller, J. R.; Moghaddam, M.; Rahman, A. F.; Roujean, J. L.; Smith, E. A.; Walthall, C. L.; Zarco-Tejada, Pablo J.; Hu, B.; Fernandes, R.; Cihlar, J.
2004-01-01

Digital.CSIC (Spain)

6

Potential Geologic Hazards Near the Thistle Landslide, Utah County, Utah

United States Geological Survey

In mid-April, 1983, an old landslide near Thistle, Utah, began to move, and within days had blocked Spanish Fork Canyon. As the slide's movement continued, construction crews gradually converted the toe of the slide into an earth-filled dam--Thistle dam--that impounded northwest-flowing Spanish For...

DRIVER (Spanish)

7

Organic matter accumulation during the Holocene in the Guadalquivir marshlands (SW Spain)

Ortiz, José E.; Torres, Trinidad; López-Pamo, José E.; Soler, V.; LLamas, Juan F.; Barettino, Daniel; García, María J.
2007-07-17

Digital.CSIC (Spain)

8

Multibeam backscatter as a tool for sea-floor characterization and identification of oil spills in the Galicia Bank

Medialdea, Teresa; Somoza, Luis; León, Ricardo; Farrán, Marcel-li; Ercilla, Gemma
2008-03-11

Digital.CSIC (Spain)

9

Internal features, mineralogy and geochemistry of ferromanganese nodules from the Gulf of Cadiz: The role of the Mediterranean Outflow Water undercurrent

González, F. J.; Somoza, L.; Lunar, Rosario; Martínez-Frías, J.; Martín Rubí, J. A.; Torres, T.; Ortiz, J. E.; Díaz del Río, Víctor
2010-03-01

Digital.CSIC (Spain)

10

Hydrocarbon-derived ferromanganese nodules in carbonate-mud mounds from the Gulf of Cadiz: Mud-breccia sediments and clasts as nucleation sites

González, F. J.; Somoza, L.; Lunar, Rosario; Martínez-Frías, J.; Martín Rubí, J. A.; Torres, T.; Ortiz, J. E.; Díaz del Río, Víctor; Pinheiro, L. M.; Magalhães, V. H.
2009-06-01

Digital.CSIC (Spain)

12

Growth patterns of a proximal terrigenous margin offshore the Guadalfeo River, northern Alboran Sea (SW Mediterranean Sea): glacio-eustatic control and disturbing tectonic factors

Lobo, F. J.; Maldonado, Andrés; Hernández-Molina, F. Javier; Fernández-Salas, L. M.; Ercilla, Gemma; Alonso, Belén
2008-09-01

Digital.CSIC (Spain)

13

Comparación de métodos para el análisis de mercurio en suelos procedentes de el callao, estado bolívar, venezuela

Carrasquero Durán, Armando; Adams, Melitón
2002-04-01

Resumen en portugués O conteúdo de mercúrio em amostras de solos provenientes de "El Callao", Estado Bolívar, Venezuela, foi determinado por digestão em água regia e quantificação pelo método do vapor frio-absorção atômica (CVAAS), e por determinação direta na matriz sólida por pirólise e pré-concentração no analisador automático de mercúrio AMA-254 (AMA). Os níveis de Hg nas amostras analisadas estiveram nos intervalos de 0,05 a 17,31mg/kg para CVAAS e de 0,050 a 20,066m (mas) g/kg para AMA. As maiores concentrações de Hg se detectaram nas áreas de moinhos, onde é empregado para amalgamar o ouro. A exatidão da técnica AMA foi estimada pela análise de rochas de referência (US Geological Survey) comprovando-se que a técnica é de exatidão e precisão satisfatórias. Se comprovou que ambas técnicas produzem resultados equivalentes sem que se produzam erros sistemáticos. Resumen en español El contenido de mercurio en muestras de suelos provenientes de El Callao, Estado Bolívar, Venezuela, fue determinado por digestión en agua regia y cuantificación por el método del vapor frío-absorción atómica (CVAAS), y por determinación directa en la matriz sólida por pirólisis y preconcentración en el analizador automático de mercurio AMA-254 (AMA). Los niveles de Hg en las muestras analizadas estuvieron en los intervalos de 0,05 a 17,31mg/kg para CVAAS y de (mas) 0,050 a 20,066mg/kg para AMA. Las mayores concentraciones de Hg se detectaron en las áreas de molinos, donde es empleado para amalgamar el oro. La exactitud de la técnica AMA fue estimada por el análisis de rocas de referencia (US Geological Survey) comprobándose que la técnica es de exactitud y precisión satisfactorias. Se comprobó que ambas técnicas producen resultados equivalentes sin que se produzcan errores sistemáticos. Resumen en inglés Mercury levels in soil samples from El Callao, Bolívar State, Venezuela, were determined by mineralization in aqua regia followed by cold vapor-atomic absorption spectrometry (CVAAS), and by direct determination on solid matrix by pyrolisis and preconcentration using an automatic mercury analyzer AMA-254 (AMA). Hg concentration in samples were in the range of 0.05 to 17.31mg/kg for CVAAS and of 0.050 to 20.060mg/kg for AMA. The higher Hg levels were found in the samples (mas) taken near mills where heavy metal is employed for gold recovery. Accuracy of AMA was assessed analyzing samples of US Geological Survey Standard rocks. It was found that both analytical procedures give equivalent results with absence of systematic errors.

Scientific Electronic Library Online (Spanish)

14

Changes in surface CO2 and ocean PH in ICES shelf sea ecosystems

Barry, James; Bellerby, Richard; Blackford, Jerry; Børsheim, Knut; Dulvy, Nick; Gattuso, Jean-Pierre; Gazeau, Frederic; Hain, Stefan; Hardman-Mounford, Nicholas; Hydes, David; Kildow, Judith; Silke Kröger, Silke; Laing, Ian; Leonardos, Nikos; Marubini, Francesca; Pelejero, Carles; Pörtner, Hans; Studd, Shaun; Suggett, Dave; Widdicombe, Steve
2008-04-01

Digital.CSIC (Spain)

15

Cenozoic ice sheet history from east Antarctic Wilkes Land continental margin sediments.

Escutia, Carlota; De Santis, L.; Donda, F.; Dunbar, R.B.; Cooper, A.K.; Brancolini, G.; Eittreim, S.L.
2005-02-01

Digital.CSIC (Spain)

17

An Assessment of the BGS δDδI Vector Magnetometer

Marsal, Santiago; Torta, Joan Miquel; Riddick, John C.
2007-01-01

Digital.CSIC (Spain)