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Reworked old crust-derived shoshonitic magma: The Guarany pluton, Northeastern Brazil

Ferreira, Valderez P.; Sial, Alcides; Pimentel, Marcio M.; Armstrong, Richard; Guimaraes, Ignez P.; da Silva Filho, Adejardo F.; de Lima, Mariucha Maria C; da Silva, Thyego R

Description

The 572Ma Guarany stock consists of magmatic epidote-bearing hornblende monzodiorite to biotite granite that intruded Paleoproterozoic orthogneisses about 10km inland from the coast in northeastern Brazil. Co-magmatic diorite enclaves and dikes are abundant throughout the pluton. The monzodiorite-granite pluton and diorite enclaves are shoshonitic and display continuous trends in variation diagrams. They display chemical and isotopic characteristics of crustal melts, such as enrichment in...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
URI: http://hdl.handle.net/1885/98477
Source: Lithos
DOI: 10.1016/j.lithos.2015.06.030

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