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The Marifil Volcanic Complex at Sierra de Pailemán: implications for the Early Jurassic magmatic evolution of the Eastern North Patagonian Region
(Taylor & Francis, 2021-03-02)
The Sinemurian Marifil Volcanic Complex at Sierra de Pailemán, located in the east part of the North Patagonian Region, Argentina, includes five lithofacies and three volcanic events. The volcanic activity begins with ...
The volcanism of the Jurassic Chon Aike Silicic LIP influenced by Paleozoic inherited crustal structures in the northeastern Deseado Massif, Patagonia
(Elsevier, 2021-12)
An area of ∼40 km2 located in the northeastern sector of the Deseado Massif is detailed studied, in which Paleozoic metamorphic and Jurassic volcanic rocks crop out. Two genetically linked and compositionally different ...
Jurassic volcanism of the Chon Aike Silicic LIP in the northeastern Deseado Massif
(Pergamon-Elsevier Science Ltd, 2021-04)
Two compositionally different volcanic cycles are documented by geological mapping, lithofacies and petrographic analyses of Jurassic volcanic rocks in the northeastern sector of the Deseado Massif, constituting the western ...
A revised interpretation of the chon aike magmatic province: active margin origin and implications for the opening of the weddell sea
(Elsevier, 2021)
Late Triassic - Jurassic igneous rocks of the Antarctic Peninsula and Patagonia provide evidence for the evolution of the margin of southwestern Gondwana. We present new geochronological (LA-ICP-MS zircon U-Pb dates) ...
PACIFIC SUBDUCTION COEVAL WITH THE KAROO MANTLE PLUME: THE EARLY JURASSIC SUBCORDILLERAN BELT OF NORTHWESTERN PATAGONIA
(G S L, 2005)
The Early Mesozoic magmatism of southwestern Gondwana is reviewed in the light of new U-Pb SHRIMP zircon ages (181 ± 2 Ma, 181 ± 3 Ma, 185 ± 2 Ma, and 182 ± 2 Ma) that establish an Early Jurassic age for the granites of ...
El centro volcánico Sierra Grande: caracterización petrográfica y geoquímica del magmatismo extensional liásico, noreste de la PatagoniaSierra Grande volcanic center: petrographical and geochemical characterization of the extensional liasic magmatism, northeastern Patagonia
(Asociación Geológica Argentina, 2011-12)
El trabajo expone los datos, interpretaciones y conclusiones, obtenidos del mapeo litofacial de un área de aproximadamente 400 km2 del Complejo Marifil en la localidad de Sierra Grande sector noreste del macizo de Somún ...
Thermal divide andesites - trachytes, petrologic evidence, and implications from Jurassic north Patagonian massif alkaline volcanism
(Pergamon-Elsevier Science Ltd, 2003-12)
The Andesitas Alvar Formation is part of the large Jurassic volcanic province of Patagonia (southern South America) that, in Jurassic time, participated in the disassembling of Gondwana in a tensional-transtensional regime ...
The Rhyolitic Plateau of the Marifil Formation (Jurassic): A Gondwana Paleosurface in the Southeastern Portion of the Northern Patagonian Massif
(Springer, 2014)
Along the southeastern border of the Northern Patagonian Massif of the provinces of Río Negro and Chubut, an extensive surface is presently called the “Rhyolitic” or “Ignimbritic Plateau.” This large geomorphological unit ...
Early Mississippian precollisional, peri-Gondwanan volcanic arc in NE-Mexico: Aserradero Rhyolite from Ciudad Victoria, Tamaulipas
(Springer, 2021-10)
The study of the pre-Mesozoic geological history of NE Mexico offers the opportunity to reconstruct the processes that occurred at the NW margin of Gondwana. The Huizachal–Peregrina Anticlinorium, which is located west of ...