Results 31 to 40 of about 1,323 (116)

Caracterización geoquímica de la ruptura sedimentaria entre los yesos de la unidad salina e intermedia de la cuenca de Madrid

Estudios Geologicos, 1989
En el Terciario de la Cuenca de Madrid existen dos unidades sedimentarias de carácter yesífero. Ambas unidades están constituidas por yesos con diferentes características, aunque su separación es dificil en diversos afloramientos debido a intensos ...
S. Ordóñez, R. Fort, M. Bustillo
doaj   +1 more source

Preservation Factors during Cretaceous Oceanic Anoxic Events in the Espírito Santo Basin, Southeast Brazil

Geosciences, 2022
The oceanic anoxic events (OAEs) are characterized by enhanced accumulation of organic matter in marine sediments. However, there is still an ongoing debate regarding the interplay between production and preservation during these events.
Igor M. Venancio, Thiago P. Santos, Fellippe R. A. Bione, Andre L. Belem, Marcelo C. Bernardes, Rut A. Díaz, Manuel Moreira, Victor Carreira, André Spigolon, Igor V. Souza, Ana Luiza S. Albuquerque   +10 more
doaj   +1 more source

Probiotics mitigate thermal stress- and pathogen-driven impacts on coral skeleton

Frontiers in Marine Science, 2023
Threats leading to a reduction in coral populations are apparent worldwide. Several different approaches have been tested to accelerate the adaptation of corals to a changing climate. Here, we evaluated the skeleton structure, crystal habit, and chemical
Mahdi Moradi, Phillipe R. Magalhaes, Raquel S. Peixoto, Raquel S. Peixoto, Cassia C.A.C. Jonck, Daniel François, Anna Clara F. Bellot, Jonatã B. Teixeira, Carla S. Silveira, Gustavo Duarte, Gustavo Duarte, Heitor Evangelista, Catia F. Barbosa   +12 more
doaj   +1 more source

The Evolution of the Cocos‐North America‐Caribbean Triple Junction From Detrital Zircon Analysis

Tectonics, Volume 44, Issue 8, August 2025.
Abstract The tectonic framework and Cenozoic evolution of the Cocos–North America–Caribbean (Co–NA–Ca) triple junction remain subjects of major geological importance due to their complexity and regional impact. New U–Pb zircon geochronology of detrital sediments and detailed structural and geomorphic mapping from southern Chiapas, Mexico, provide ...
Mattia Parolari, Rogelio Hernández‐Vergara, Elisa Fitz‐Díaz, Gabriel Serrano‐López, Arturo Gómez‐Tuena, Apolinar Albiter‐Díaz, David Meza‐Fematt, José G. Cavazos‐Tovar   +7 more
wiley   +1 more source

Autoorganización geoquímica: una alternativa sinergética en la modelización de sistemas geológicos. Revisión de principios básicos

Estudios Geologicos, 1989
La autoorganización geoquímica es el reflejo de la aplicación de una Ciencia más amplia, la Sinergética, al campo de la Geología. Se trata de una línea de investigación abierta muy recientemente y, por tanto, su planteamiento se encuentra todavía ...
M. J. Gimeno, J. M. Tena, L. F. Auqué, J. Mandado, J. Fernández   +4 more
doaj   +1 more source

Written in bones: palaeoclimate histotaphonomic history inferred from a complete Megatherium skeleton preserved in the Atacama Desert

Palaeontology, Volume 68, Issue 4, July/August 2025.
Abstract A nearly complete and relatively well‐preserved skeleton of the giant ground sloth Megatherium sp. in the hyperarid core of the Atacama Desert reveals how climate related taphonomic processes drastically transformed these remains over time.
Luisa Straulino Mainou, Jacqueline Correa‐Lau, Rafael Labarca, Natalia A. Villavicencio, Vivien G. Standen, Susana Monsalve, Paula C. Ugalde, Sergey Sedov, Teresa Pi Puig, Alan Ulises Loredo‐Jasso, Francisco J. Caro, Gabriela M. Jarpa, Patricia Hernández‐Michaud, Claudio Latorre, Calogero M. Santoro   +14 more
wiley   +1 more source

Tracking the Caribbean Magmatic Evolution: The British Virgin Islands as a Transition Between the Greater and Lesser Antilles Arcs

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract The British Virgin Islands (BVI) archipelago, located between the Greater Antilles and the Lesser Antilles, is a key location to study the geodynamic evolution of the Caribbean plate. Geochemistry of the studied samples reveals typical volcanic arc signatures, including a calc‐alkaline affinity, strong negative HFSE anomalies, and LILE ...
Noémie Bosc, Delphine Bosch, Mélanie Noury, Olivier Bruguier, Lény Montheil, Douwe J. J. van Hinsbergen, Jean‐Jacques Cornée, Jonathan Outin, Mélody Philippon   +8 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

Inorganic carbon dynamics and their relation to autotrophic community regime shift over three decades in a large, alkaline river

Limnology and Oceanography, Volume 70, Issue 5, Page 1122-1136, May 2025.
Abstract How much of the excess CO2 in running waters comes from in‐stream respiration of organic carbon? To answer this, we developed a 30‐yr metabolism‐carbonate system database at an hourly resolution for the Loire River, France, a large, alkaline river.
Jacob S. Diamond, An Nguyen Truong, Gwenaël Abril, Enrico Bertuzzo, Vincent Chanudet, Raphael Lamouroux, Florentina Moatar   +6 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