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Grenvillian massif-type anorthosites in the Sierras Pampeanas

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


We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U-Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma for ig

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Journal of the Geological Society
DOI: 10.1144/0016-764904-100


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