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Early Permian arc-related volcanism and sedimentation at the western margin of Gondwana: Insight from the Choiyoi Group lower section
(Elsevier, 2016-09)
Permian sedimentary and basic to intermediate volcanic rocks assigned to the Conglomerado del Río Blanco and Portezuelo del Cenizo Formation, lower part of the Choiyoi Group, crop out between the Cordon del Plata, Cordillera ...
30 million years of Permian volcanism recorded in the Choiyoi igneous province (W Argentina) and their source for younger ash fall deposits in the Parana Basin: SHRIMP U-Pb zircon geochronology evidence
(ELSEVIER SCIENCE BV, 2011)
We present four SHRIMP U-Pb zircon ages for the Choiyoi igneous province from the San Rafael Block, central-western Argentina. Dated samples come from the Yacimiento Los Reyunos Formation (281.4 +/- 2.5 Ma) of the Cochico ...
The Choiyoi volcanic province at 34°S-36°S (San Rafael, Mendoza, Argentina): Implications for the Late Palaeozoic evolution of the southwestern margin of Gondwana
(Elsevier Science, 2009-08)
The Choiyoi rhyolitic province of Chile and Argentina (23°S-42°S) was emplaced at the SW margin of Gondwana during the Permian. The San Rafael Massif (Mendoza, Argentina, 34°-36°S), is a key area to analyse the relative ...
Three stages in the Late Paleozoic to Triassic magmatism of southwestern Gondwana, and the relationships with the volcanogenic events in coeval basins
(Pergamon-Elsevier Science Ltd, 2015-11)
The intermediate to acid Choiyoi Magmatic Province is the most conspicuous feature along the Late Paleozic continental margin of southwestern Gondwana, and is generally regarded as the possible source for the widespread ...
The Choiyoi Group in the Cordón del Plata range, western Argentina: structure, petrography and geochemistry
(Universidad Nacional de Colombia, 2020-06)
El Grupo Choiyoi del Permo-Triásico es una de las suites volcánicas y sedimentarias más conspicuas del sur de Sudamérica, considerada crítica para comprender la evolución geológica de los márgenes occidentales de Gondwana. ...
Nuevos datos geocronológicos en subsuelo y afloramientos del Grupo Choiyoi en el oeste de La Pampa: implicancias estratigráficasNew geochronological data from subsurface and outcrops of the Choiyoi Group in the west of La Pampa: Stratigraphic implications
(Asociación Geológica Argentina, 2013-03)
Se presenta nueva información geocronológica de rocas del subsuelo del yacimiento petrolífero 25 de Mayo - Medanito S.E. y de afloramientos del cerro Colón, ubicados al sudoeste y centro-oeste de la provincia de La Pampa, ...
Periodos eruptivos e inter-eruptivos en el Grupo Choiyoi de la Precordillera mendocinaEruptiveand inter-eruptivestages in theChoiyoi Group of the Mendoza Precordillera
(Instituto Superior de Correlación Geológica, 2012-06)
En la zona del Cerro Siete Colores, ubicado al este de Uspallata, en la Precordillera mendocina, se localiza un conjunto de rocas volcánicas y sedimentarias que fue asignado a la sección ácida del Grupo Choiyoi, alcanzando ...