Results 51 to 60 of about 4,293 (167)

Patterns of Plio‐Pleistocene Ice Volume Variability Recorded by the Large‐Magnitude Explosive Eruptions From the Kamchatka‐Kurile Volcanic Arc

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 10, October 2024.
Abstract Marine fallout ash beds can provide continuous, time‐precise records of highly explosive arc volcanism that can be linked with the climate record. An evaluation of revised Plio‐Pleistocene (0–4 Myr) tephrostratigraphies from Ocean Drilling Program Sites 881, 882, and 884 confirms cyclicity of the Kamchatka‐Kurile arc volcanism and a marked ...
Susanne M. Straub, Brendan Reilly, Maureen E. Raymo, Arturo Gómez‐Tuena, Kuo‐Lung Wang, Elisabeth Widom, David Kuentz, Richard J. Arculus   +7 more
wiley   +1 more source

Distribución de tierras raras en soluciones y coloides de un sistema natural de aguas ácidas (Arroyo del Val, Zaragoza)

Estudios Geologicos, 1993
El Arroyo del Val (provincia de Zaragoza) constituye un curso de aguas ácidas de origen natural, generadas por el lavado de los materiales paleozoicos que atraviesa (Formación Bádenas), ricos en sulfuros metálicos dispersos.
L. F. Auqué, J. M. Tena, M. J. Gimeno, J. Mandado, A. Zamora, P. L. López Julián   +5 more
doaj   +1 more source

Soil development and ancient Maya land use in the tropical karst landscape: Case of Busiljá, Chiapas, México

Soil Science Society of America Journal, Volume 88, Issue 5, Page 1561-1582, September/October 2024.
Abstract The soil mantle of the tropical karstic landscapes of Southern Mexico was shaped by specific processes of pedogenesis and long‐term human impacts of ancient Maya agriculture. To understand the interaction between natural and human‐induced soil‐forming processes in the calcareous mountains of Chiapas state, we studied soil toposequences around ...
P. García‐Ramírez, K. Guillén, S. Sedov, C. Golden, S. Morell‐Hart, A. Scherer, T. Pi, E. Solleiro‐Rebolledo, H. Dine, Y. Rivera   +9 more
wiley   +1 more source

Estudio petrológico del plutón de Trujillo (Cáceres. España)

Estudios Geologicos, 1984
En función del estudio petrológico, el plutón de Trujillo está constituido por una adamellita porfídica que ha cristalizado en tres fases, presentando una cuarta de alteración.
J. Guijarro, A. Moreno, J. Astudillo, A. Gutiérrez   +3 more
doaj   +1 more source

Metals in coastal groundwater systems under anthropogenic pressure: a synthesis of behavior, drivers, and emerging threats

Limnology and Oceanography Letters, Volume 9, Issue 4, Page 388-410, August 2024.
Abstract Submarine groundwater discharge (SGD) dynamically links land‐ and ocean‐derived chemical constituents, such as metals, in the coastal ocean. While many metals are sediment‐bound, changing environmental conditions, particularly along the coast, may lead to increased release of metals to their dissolved and more bioavailable form.
Tristan McKenzie, Amy Moody, João Barreira, Xiaoyi Guo, Anael Cohen, Stephanie J. Wilson, Murugan Ramasamy   +6 more
wiley   +1 more source

Variación de 13C en el ambiente de Madrid (atmósfera, aguas superficiales y aguas subterráneas)

Estudios Geologicos, 1995
Se analizan el 13C de la atmósfera, ríos y pozos del área de Madrid, al objeto de evaluar su distribución y origen, mediante adaptación y desarrollo de técnicas de muestreo y análisis. Las muestras atmosféricas presentan valores de δ13C situados entre -9,
F. López Vera, J. J. Tejado, E. Fabián, C. Gómez Artola, R. Redondo   +4 more
doaj   +1 more source

Surface water quality in Amazonian Floodplain Lakes, data set of the Lago Grande de Curuai Floodplain Lake, Pará‐Brazil

Geoscience Data Journal, Volume 11, Issue 3, Page 252-266, July 2024.
The data set contains surface water quality parameters in a large Amazonian floodplain. The data were acquired through nine field campaigns organized between March 2013 and April 2017. A minimum of 25 fixed stations were visited during each campaign. Vertical profiles obtained by a multiparameter probe at each station are also available.
Derlayne Dias Roque, Marie‐Paule Bonnet, Jérémie Garnier, Cleber Kraus Nunes, Patrick Seyler, David Motta Marques   +5 more
wiley   +1 more source

Marcadores geoquímicos na distinção estratigráfica e suas aplicações em geomorfologia

Revista de Geografia (Recife)
A geoquímica focada na paisagem surgiu na Rússia na metade do século XX, visando entender a dinâmica das formações superficiais por meio da análise de elementos químicos.
Daniel Rodrigues de Lira, Antonio Carlos de Barros Corrêa, José Danilo da Conceição Santos, Drielly Naamaa Fonseca   +3 more
doaj   +1 more source

Relaciones entre porosidad, contenido en arcillas y durabilidad de areniscas

Materiales de Construccion, 1985
The petrographical characterization of three spanish sandstones from Villamayor (Salamanca), Somió and Tazones (Asturias) is presented. The significance of the percentage and type of the clay minerals cementing the grains on the pore system geometry, for
R. M. Esbert, J. Ordaz, L. Valdeón
doaj   +1 more source

The abundant fraction of soil microbiomes regulates the rhizosphere function in crop wild progenitors

Ecology Letters, Volume 27, Issue 6, June 2024.
The rhizosphere influence on the soil microbiome and function of crop wild progenitors remains virtually unknown, despite its relevance to develop microbiome‐oriented tools in sustainable agriculture. Rhizosphere influence was higher for abundant taxa across the four microbial groups and had a positive influence on rhizosphere soil organic C and ...
Miguel de Celis, María José Fernández‐Alonso, Ignacio Belda, Carlos García, Raúl Ochoa‐Hueso, Javier Palomino, Brajesh K. Singh, Yue Yin, Jun‐Tao Wang, Luis Abdala‐Roberts, Fernando D. Alfaro, Diego Angulo‐Pérez, Manoj‐Kumar Arthikala, Jason Corwin, Duan Gui‐Lan, Antonio Hernandez‐Lopez, Kalpana Nanjareddy, Babak Pasari, Teresa Quijano‐Medina, Daniela S. Rivera, Salar Shaaf, Pankaj Trivedi, Qingwen Yang, Eli Zaady, Yong‐Guan Zhu, Manuel Delgado‐Baquerizo, Rubén Milla, Pablo García‐Palacios   +27 more
wiley   +1 more source