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Trace element composition of amphibole and petrogenesis of hornblendites and plutonic suites of Cretaceous magmatic arcs developed in the Fuegian Andes, southernmost South America

García, M.F.Torres; Calderón, M.; Ramirez de Arellano, M Carmen; Hervé, F.; Opitz, J.; Theye, Thomas; Fanning, Christopher Mark; Pankhurst, Robert J; González-Guillot, M.; Fuentes, Francisco; Babinski, Marly


The evolution of continental crust in convergent margins can be explored in southernmost South America (54-56°S). Plutonic rocks of the Fuegian Batholith and the rear-arc satellite Ushuaia Pluton were emplaced within the magmatic arc and the Fuegian fold-and-thrust belt, respectively. They record subduction zone processes in two distinct tectonic settings during the evolution of the Rocas Verdes Basin. We report new U-Pb zircon geochronology, bulk rock chemistry, Sr-Nd isotope data, and EPMA...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Lithos
DOI: 10.1016/j.lithos.2020.105656


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