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The Mesoproterozoic Maz terrane in the Western Sierras Pampeanas, Argentina, equivalent to the Arequipa-Antofalla block of southern Peru? Implications for West Gondwana margin evolution

Casquet, Cesar; Pankhurst, Robert J; Rapela, Carlos W; Galindo, Carmen; Fanning, Christopher; Chiaradia, M.; Baldo, Edgardo; Gonzalez-Casado, Jose M; Dahlquist, Juan A.

Description

The rocks of Sierra de Maz and Sierra del Espinal (Western Sierras Pampeanas) represent pre-Famatinian (Ordovician) basement. Isotope compositions (Nd and Pb) of metasedimentary rocks and SHRIMP U-Pb dating of detrital zircons, combined with other geological evidence, show that three parallel N-S domains can be recognized. The central Maz Domain contains pre-Grenvillian metasedimentary rocks deposited between 1.2 and 1.6 Ga, that underwent Grenvillian granulite facies metamorphism and were...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/33803
Source: Gondwana Research
DOI: 10.1016/j.gr.2007.04.005

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