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Mostrando ítems 31-40 de 43
Deformation understanding in the Upper Paleozoic of Ventana Ranges at Southwest Gondwana Boundary
(Nature, 2021-10)
At the east of the Ventana Ranges, Buenos Aires, Argentina, outcrops the Carboniferous-Permian Pillahuincó Group (Sauce Grande, Piedra Azul, Bonete and Tunas Formation). We carried out an Anisotropy of Magnetic Susceptibility ...
Geological factors and evolution of southwestern Gondwana Triassic plants
(Elsevier Science, 2003-03)
A synergistic model based on reciprocal influences between biotic and abiotic factors is developed for the Triassic of southwestern Gondwana. Changes in physical environment exerted a strong influence on the characteristics ...
A review on the tectonic evolution of the Paleozoic-Triassic basins from Patagonia: Record of protracted westward migration of the pre-Jurassic subduction zone
(Pergamon-Elsevier Science Ltd, 2019-11)
The Paleozoic-Triassic Patagonian basins, at present comprising the Andean hinterland and structural basement of active basins, document a pre-Jurassic evolution associated with accretionary processes at the paleo-Pacific ...
The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
(Oxford University Press, 2017-02)
The temnospondyl Rhinesuchidae included more than 20 nominal taxa, many of which were based on poorly preserved and taxonomically indeterminate holotypes. In the present contribution, a comprehensive revision of Rhinesuchidae ...
A geometric morphometric approach to the analysis of skull shape in Triassic dicynodonts (Therapsida, Anomodontia) from South America
(Veterinary and Human Toxicology, 2019-12)
Dicynodont therapsids were a major component of the Permo-Triassic terrestrial ecosystems across Pangea and have been regarded as specialized herbivores. In South America, the group was represented by several taxa of the ...
Palaeomagnetism of the Late Devonian-Early Carboniferous Achala Batholith, Córdoba, central Argentina: Implications for the apparent polar wander path of Gondwana
(Elsevier Science, 2008-03)
The Achala Batholith (31°30′S, 64°45′W, Córdoba, Argentina) is a major magmatic complex of the Sierras Pampeanas, emplaced as a post-orogenic pluton in a metamorphic-plutonic basement. It is mainly a porphyritic to ...
A new Late Triassic vertebrate assemblage from Northwestern ArgentinaUna nueva asociación de vertebrados del triásico tardío del noroeste de Argentina
(Asociación Paleontológica Argentina, 2015-04)
La formación Quebrada del Barro (QBF) es parte de la Cuenca continental Marayes-El Carrizal, en el noroeste de Argentina. Acá reportamos una diversa asociación faunística recientemente descubierta en la Formación Quebrada ...
Paleomagnetismo en rocas del Jurásico y Cretácico Inferior en el flanco occidental de la serranía del Perijá: contribuciones a la evolución tectónica del NW de SuraméricaPaleomagnetism from Jurassic and early Cretaceous rocks on the Perija range western flank: insights to the tectonic evolution from NW of South America
(Universidad Industrial de Santander, 2012-12)
La Serranía del Perijá (SP) es un sistema montañoso ubicado en la esquina noroccidental de Suramérica; sobre su flanco occidental afloran rocas de las formaciones La Quinta, Rio Negro y Grupo Cogollo que fueron depositadas ...
Petrology and geochemistry of high-Al chromitites from the Medellín Metaharzburgitic Unit (MMU), ColombiaPetrología y geoquímica de cromititas ricas en Al de la Unidad Metaharzburgítica de Medellín (UMM), Colombia
(Universidad Nacional Autónoma de México, 2020-04)
La Unidad Metaharzburgítica de Medellín (UMM), emplazada en el margen continental de Pangea durante el Triásico, localizada en la Cordillera Central de Colombia, comprende metaharzburgitas y en menor proporción metadunitas ...
A high-precision U–Pb zircon age constraints the timing of the faunistic and palynofloristic events of the Carnian Ischigualasto Formation, San Juan, Argentina
(Pergamon-Elsevier Science Ltd, 2021-11)
The Late Triassic represents records many of the most critical biotic crises in life-history (from Carnian to the end-Triassic extinction, ETE). Some hypotheses propose that these life changes were linked with shifts in ...