Skip navigation
Skip navigation

A deformed alkaline igneous rock-carbonatite complex from the Western Sierras Pampeanas, Argentina: Evidence for late Neoproterozoic opening of the Clymene Ocean?

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

Description

A deformed ca. 570 Ma syenite-carbonatite body is reported from a Grenville-age (1.0-1.2 Ga) terrane in the Sierra de Maz, one of the Western Sierras Pampeanas of Argentina. This is the first recognition of such a rock assemblage in the basement of the Central Andes. The two main lithologies are coarse-grained syenite (often nepheline-bearing) and enclave-rich fine-grained foliated biotite-calcite carbonatite. Samples of carbonatite and syenite yield an imprecise whole rock Rb-Sr isochron age...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/36327
Source: Precambrian Research
DOI: 10.1016/j.precamres.2008.06.011

Download

File Description SizeFormat Image
01_Casquet_A_deformed_alkaline_igneous_2008.pdf4.48 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  12 November 2018/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator