Results 41 to 50 of about 259 (114)

Contribución de los isótopos de He al origen de los fluidos hidrotermales: aplicación al estudio de las mineralizaciones de fluorita de Asturias (N de España)

Estudios Geologicos, 2010
En este trabajo se ha realizado un estudio de isótopos de He con objeto de determinar la influencia mantélica o cortical de los volátiles en los fluidos implicados en la formación de las mineralizaciones de F-Ba de Asturias (N de España).
V. Sánchez, T. Martín-Crespo, E. Vindel, M. Corbella, E. Cardellach   +4 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

Alguns Gastrópodes Pleistocênicos (Formação Xaraiés) do Município de Bonito, Mato Grosso do Sul. [PDF]

Anuário do Instituto de Geociências, 2007
A Formação Xaraiés foi caracterizada em1945 (Almeida, F. F. M., 1945. Boletim da Divisãode Geologia e Mineralogia, (116):1-18) como umaunidade de carbonatos originados por depósitos decones de dejeção, de provável idade pleistocênica,ocorrendo nos ...
Sandro M. Scheffler, Norma C. Salgado
doaj  

Beyond species means – the intraspecific contribution to global wood density variation

New Phytologist, Volume 249, Issue 6, Page 2630-2651, March 2026.
Summary Wood density is central for estimating vegetation carbon storage and a plant functional trait of great ecological and evolutionary importance. However, the global extent of wood density variation is unclear, especially at the intraspecific level. We assembled the most comprehensive wood density collection to date, including 109 626 records from
Fischer FJ, Chave J, Zanne A, Jucker T, Fajardo A, Fayolle A, de Lima RAF, Vieilledent G, Beeckman H, Hubau W, De Mil T, Wallenus D, María Aldana A, Alvarez-Dávila E, Alves LF, Apgaua DMG, Arcanjo F, Bastin J, Bilous A, Birnbaum P, Blyshchyk V, Borah J, Boukili V, Camarero JJ, Casas L, Gatti RC, Chambers JQ, Fabiano EC, Choat B, Conti G, Cornwell W, Dar JA, Das AK, Dobler M, Dougabka D, Edwards DP, Evans R, Falster D, Fearnside P, Flores O, Fyllas N, Gérard J, Goodman RC, Guibal D, Henao-Diaz LF, Hervé V, Hietz P, Homeier J, Ibanez T, Ilic J, Jansen S, Kalita RM, Kenzo T, Kindermann L, Kothandaraman S, Kotowska M, Kubota Y, Langbour P, Lawson J, de Lima ALA, Link RM, Linstädter A, López R, Macinnis-Ng C, Magnago LFS, Martin AR, Matheny AM, McCarthy JK, Miller RB, Nath AJ, Nelson BW, Njana M, Nogueira EM, Oliveira A, Oliveira R, Olson M, Onoda Y, Paul K, Piotto D, Radtke P, Razafindratsima O, Ramananantoandro T, Read J, Richardson S, de la Riva EG, Rodríguez-Reyes O, Rolim SG, Rolo V, Rosell JA, Salguero-Gómez R, Santini NS, Schuldt B, Schwendenmann L, Sellin A, Staples T, Stevenson PR, Sundarapandian S, van der Sande MT, Thibaut B, Tng DYP, Torezan JMD, Villanueva B, Weiskittel A, Wells J, Wright SJ, Zieminska K.   +105 more
europepmc   +2 more sources

Rupture and Relamination of Continental Lithosphere in a Subduction System (Variscan Orogeny, SW Iberia)

Tectonics, Volume 44, Issue 7, July 2025.
Abstract Relamination is closely connected to subduction zones. Despite the numerous high‐P metamorphic belts recognized on Earth, relamination remains a poorly documented process. We present a continental subduction zone where the exhuming high‐P rocks became a relaminant under the upper plate.
Rubén Díez Fernández, Diana Moreno‐Martín, Alejandro Díez Montes, Esther Rojo‐Pérez, Irene Novo‐Fernández, Luis Miguel Martín Parra, Jerónimo Matas, Francisco J. Rubio Pascual   +7 more
wiley   +1 more source

Variabilidad química y mineralógica de las facies glauconíticas del sector norte del margen continental Mar de Alborán

Estudios Geologicos, 1998
Se han estudiado granos glauconíticos de los sedimentos superficiales de la plataforma y talud continentales (profundidades entre 50 y 225 m) de la Cuenca del Mar de Alborán, frente a la localidad de Benalmádena (Málaga).
M. C. Domínguez, E. García Romero, A. La Iglesia, J. V. Navarro Gascón, A. Santos Sánchez, C. Viedma Molero   +5 more
doaj   +1 more source

Geochronology and detrital zircons sources from the Sierra Albarrana Domain (SW Iberian Massif)

Geogaceta, 2023
This study compiles the U-Pb and 40Ar/39Ar geochronology of the metasedimentary, migmatitic and granitic rocks of the Sierra Albarrana Domain, based on data recently published by the authors together with other bibliographic sources.
Byron Solis Alulima, Jacobo Abati Gómez, Alicia López Carmona, Gabriel Gutiérrez Alonso, Javier Fernández Suárez   +4 more
doaj   +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

Rift‐Related Low‐Pressure–High‐Temperature Granulite Facies Metamorphism Generates Widespread Peraluminous Crustal Melts: Evidence From the Early Jurassic Mexican Crust

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.
Abstract High heat fluxes occurring in rift settings are expected to generate partially melted low‐pressure–high‐temperature granulites (LP–HTG). Therefore, studying these rocks can offer valuable insights into crustal reworking during extension. However, our interpretations are limited by the rarity of LP–HTG in the metamorphic record.
Anthony Ramírez‐Salazar, Mattia Parolari, Arturo Gómez‐Tuena, Fernando Ortega‐Gutiérrez, Mariano Elías‐Herrera   +4 more
wiley   +1 more source

Late Cambrian Syn‐Intrusive Thickening of the Ikh Mongol Arc Domains in the Mongolian Collage

Tectonics, Volume 44, Issue 1, January 2025.
Abstract Structural analysis, U–Pb monazite and xenotime dating, Ar–Ar dating of biotite and amphibole and thermodynamic modeling of peak metamorphic assemblages allow constraining the tectono‐thermal evolution of the migmatite‐magmatite domain on the southern periphery of Precambrian Zavkhan Block. The main subvertical metamorphic fabric resulted from
Vít Peřestý, Igor Soejono, Karel Schulmann, Gilles Ruffet, Andrew Kylander‐Clark, Jiří Sláma, Pavla Štípská, Petra Maierová, Pavel Hanžl, Carmen Aguilar, Adam Kašpar   +10 more
wiley   +1 more source