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Jurassic break-up of the Peri-Gondwanan margin in northern Colombia: Basin formation and implications for terrane transfer
(Pergamon-Elsevier Science Ltd, 2019-01)
Jurassic extensional basins developed along the northwestern margin of South America during the break-up of Pangea. Presently, these basins are dispersed in several tectonic blocks of the northern Andes and Mexico, hindering ...
Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin
(Elsevier Science, 2015-05)
The Central Patagonia is characterized by prominent continental deposits that belong to the Cretaceous Chubut Group Basin, whose tectonic setting remains controversial. It has been interpreted as a foreland basin, an ...
Tectonosedimentary evolution of the Coastal Cordillera and Central Depression of south-Central Chile (36°30′-42°S)
(Elsevier Science, 2021-02)
The forearc of south-central Chile (36°30′-42°S) is characterized by the presence of a Coastal Cordillera and a low lying area known as the Central Depression. The origin of these morphostructural units has been largely ...
The upper mantle beneath Patagonia, Argentina, documented by xenoliths from alkali basalts
(Pergamon-Elsevier Science Ltd, 2005-01)
Mantle xenoliths in alkali basaltic lavas (with ocean-island basalt chemical signatures) and cinder cones occur in several areas of Patagonia. A representative suite of mantle xenoliths was collected in the region between ...
A review of the geology of the Argentinian Fuegian Andes
(Pergamon-Elsevier Science Ltd, 2001-01)
Seven stratigraphic units reflect the tectonic evolution of the Argentinian Fuegian Andes: Basement (Paleozoic-Jurassic); Lemaire Formation (Upper Jurassic); Yahgan-Beauvoir formations (Lower Cretaceous); Cerro Matrero ...
Intracontinental rift-related deposits: A review of key models
(Elsevier Science, 2017-10)
Mineral systems associated with extensional fault systems in continental environments and not related to magmatic activity involve various deposit models that can be grouped into a single system which would plausibly explain ...
Miocene magmatism and tectonics of the easternmost sector of the Calama-Olacapato-El Toro fault system in Central Andes at ∼24°S: Insights into the evolution of the Eastern Cordillera
(Geological Society of America, 2008-12)
The Miocene Las Burras - Almagro - El Toro magmatic complex lies ∼300 km to the east of the Central Andes volcanic arc, in the easternmost sector of the transverse Calama - Olacapato - El Toro fault zone. The magmatic rocks ...
Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
(Geological Society of America, 2012-06)
The surface response, in terms of drainage pattern changes, to the Cretaceous geodynamic reorganization of the Andean subduction zone between 36°S and 41°S is reconstructed through the geochronology-based provenance study ...
Mid-Cretaceous polar standstill of South America, motion of the Atlantic hotspots and the birth of the Andean cordillerab Departamento de Ciencias Geológicas, FCEyN, Universidad de Buenos Aires, Argentina
(Elsevier Science, 2008-07)
A paleomagnetic study on mid-Cretaceous rocks from the San Bernardo foldbelt (Patagonia) yields high unblocking temperature and high-coercivity magnetizations. The results indicate absence of relative vertical-axis rotations ...
Thermobarometry, Sm/Nd ages and geophysical evidence for the location of the suture zone between Cuyania and the western proto-Andean margin of Gondwana
(Elsevier Science, 2004-12)
Basement rocks comprising ortho- and paragneisses and schists whose tectono-metamorphic evolution is poorly known, are exposed in the Sierras de Umango, Maz-Espinal and Las Ramaditas, in the northwest of the La Rioja ...