Results 21 to 30 of about 56,590 (111)

Impact of volcanism on the sedimentary record of the Neuquén rift basin, Argentina: towards a cause and effect model [PDF]

, 2018
The analysis of volcano-sedimentary infill in sedimentary basins constitutes a challenge for basin analysis and hydrocarbon exploration worldwide. In order to understand the contribution of volcanism to the sedimentary record in rift basins, we study the
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core   +2 more sources

Petrografía, geoquímica y geocronología U/Pb en circones de rocas ígneas y metamórficas a lo largo del Río Cuiarí en el sur del Departamento de Guainía, Colombia

Boletín de Geología, 2019
espanolPara avanzar en la comprension de la Provincia Geocronologica Rio Negro-Juruena (1,55-1,8 Ga) del Craton Amazonico en el suroriente colombiano se analizaron rocas metamorficas, igneas y meta-sedimentarias aflorantes alrededor del Rio Cuiari en el ...
Amed Bonilla, Thomas Cramer, Marc Poujol, H. Cano, J. Franco, Zeze Amaya   +5 more
semanticscholar   +1 more source

New Data on Food Consumption in Pre‐Hispanic Populations from Northwest Argentina (ca. 1000–1550 A.D.): The Contribution of Carbon and Nitrogen Isotopic Composition of Human Bones

Journal of Anthropology, Volume 2013, Issue 1, 2013., 2013
We present data on carbon and nitrogen isotopic composition of human bones from Tolombón (Calchaqui Valley, Salta) and Esquina de Huajra (Quebrada de Humahuaca, Jujuy) sites located in Northwest Argentina (NWA). Both are complex archaeological residential settlements ascribed to the Regional Development Period (ca.
María Soledad Gheggi, Verónica Isabel Williams, Maryna Steyn   +2 more
wiley   +1 more source

Arquitectura estratigráfica, ambientes de depósito y geocronología de la Formación Olinalá (Pérmico tardío), noreste de Guerrero, México

Revista Mexicana de Ciencias Geológicas, 2020
La Formación Olinalá representa una sucesión sedimentaria pérmica marino-continental de ~860 m de espesor, excepcionalmente expuesta en el noreste del estado de Guerrero, en el sur de México.
Edgar Juárez-Arriaga, Gustavo Murillo-Muñetón   +1 more
doaj   +1 more source

Evolução tectônica do Cinturão Dom Feliciano no Sul do Brasil: relações geológicas e geocronologia U-Pb

, 2016
The Dom Feliciano Belt is an important Neoproterozoic to Cambrian orogenic complex, extending from eastern Uruguay to southern Brazil. It comprises a collage of oceanic domains and continental fragments developed between 900 and 540 Ma between the Rio de
R. P. Philipp, Márcio Martins Pimentel, Farid Chemale   +2 more
semanticscholar   +1 more source

Catálogo de dataciones isotópicas en Colombia

Boletín Geológico, 1992
Este trabajo es una compilación de los resultados geocronológicos realizados en rocas del territorio colombiano con los métodos K-Ar, Rb-Sr, U-Pb y trazas de fisión, publicados hasta 1991.
Mario Maya Sánchez
doaj   +1 more source

Episodic melting and magmatic recycling along 50 Ma in the Variscan belt linked to the orogenic evolution in NW Iberia [PDF]

, 2017
The advent of a large amount of more precise U-Pb age data on Variscan granitoids from NW Iberia in recent years has provided a more focused picture of the magmatic history of the Western European Variscan belt (WEVB).
Fernández Suárez, Javier, García Acera, G., Gutiérrez-Alonso, Gabriel, Gärtner, Andreas, Hofmann, Mandy, López Carmona, Alicia, Martín Garro, J.   +6 more
core   +4 more sources

Análises U-Th-Pb (Shrimp) em titanitas: técnicas analíticas e exemplos em terrenos do sul-sudeste brasileiro – Instituto de Geociências da Universidade de São Paulo

Geologia USP. Série Científica, 2016
Inúmeros cristais de titanita foram coletados na mina de cobre Khan, Namíbia, África. Eles foram analisados através da técnica de microssonda iônica de alta resolução e de alta sensibilidade (SHRIMP) no Laboratório de Geocronologia de Alta Resolução ...
Kei Sato Sato, Oswaldo Siga Junior, Miguel Angelo Stipp Basei, Colombo Celso Gaeta Tassinari, Artur Takashi Onoe   +4 more
doaj   +1 more source

Environmental and climatic proxies for the Cañadón Asfalto and Neuquén basins (Patagonia, Argentina): review of middle to upper jurassic continental and near coastal sequences [PDF]

, 2015
In this review, we include several proxies (sedimentology, palynology, invertebrates) from the Cañadón Asfalto and Neuquén basins, to infer the environments and regional climatic context during the Middle to Late Jurassic of Patagonia.
Cabaleri, Nora Graciela, Melendi, Daniel Luis, Narvaez, Paula Liliana, Quattrocchio, Mirta Elena, Rosenfeld, U., Scafati, Laura Haydee, Volkheimer, Wolfang   +6 more
core   +1 more source

Caracterización de parámetros en la concentración de circones para andesitas, monzogranitos, riolitas, cuarcitas y cuarzomonzonitas

Boletín Geológico, 2018
El Laboratorio Químico de la sede Medellín del Servicio Geológico Colombiano está desarrollando investigaciones sobre la caracterización de diferentes parámetros implicados en el proceso de concentración de circones que se utilizan para datación ...
John Mauro Castaño Duque, Fredy Alonso Rodríguez, Carlos Andrés García   +2 more
doaj   +1 more source