Buscar
Mostrando ítems 51-60 de 3781
Geodynamic controls on magmatic arc migration and quiescence
(Elsevier Science, 2021-07)
Reconfigurations of magmatic arcs through time have been recognized since pioneering works, describing inland and trenchward arc migrations or magmatic shut-off lasting for several millions of years. These modifications ...
Petrology and geochronology of the San Martín de los Andes batholith: Insights into the Devonian magmatism of the North Patagonian Andes
(Pergamon-Elsevier Science Ltd, 2021-08)
Evidence is growing that a belt of Devonian plutonism is present in the Northern Patagonian segment of the present-day Andes. This plutonism formed along the paleo-Pacific margin of the Gondwana supercontinent. New whole ...
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 ...
New hints on the evolution of the Eastern Magmatic Belt, Puna Argentina. SW Gondwana margin: Zircon U-Pb ages and Hf isotopes in the Pachamama Igneous-Metamorphic Complex
(Pergamon-Elsevier Science Ltd, 2019-06-27)
There are various geotectonic interpretations of the origin of the Eastern Magmatic Belt as part of the Lower Paleozoic Orogen at the Southwestern Gondwana margin in the Puna, NW Argentina. In this research paper, we ...
Upper Triassic to Middle Jurassic magmatic evolution of northern Patagonia: Insights from the tectonic and crustal evolution of the Los Menucos area, North Patagonian Massif, Argentina
(Elsevier Ltd., 2021-11)
The Upper Triassic magmatic and tectonic evolution of the central North Patagonian Massif is evaluated on the basis of the zircon U–Pb-Hf record and whole-rock geochemistry for volcanic rocks of the Los Menucos area. The ...
Upper Triassic to Middle Jurassic magmatic evolution of northern Patagonia: Learned insights from the tectonic and crustal evolution of the Los Menucos area, North Patagonian massif, Argentina
(Elsevier B.V., 2021-11)
The Upper Triassic magmatic and tectonic evolution of the central North Patagonian Massif is evaluated on the basis of the zircon U–Pb-Hf record and whole-rock geochemistry for volcanic rocks of the Los Menucos area. The ...
Igneous Rock Associations 25. Pre-Pliocene Andean Magmatism in Chile
(GEOLOGICAL ASSOC CANADA, 2020)
Data on the arc magmatism developed in the Antarctic Peninsula and Patagonia during the late triassic–jurassic: a compilation of new and previous geochronology, geochemistry and isotopic tracing results
(Elsevier, 2021)
We present the results of U-Pb zircon dating conducted using laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS), isotopic tracing analyses of Hf in zircon and Sr-Nd in whole-rock and whole-rock major ...
Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
(2013)
In the southwestern Goiás State, the rocks of the Goiás Magmatic Arc present mineral assemblages typical of the amphibolite facies. Thermobarometric calculations show that P and T conditions for associations involving ...