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U-Pb zicron (ID-TIMS and SHRIMP) evidence for the early ordovician intrusion of metagranites in the late Proterozoic Canaveilles Group of the Pyrenees and the Montagne Noire (France)

Cocherie, Alain; Baudin, Thierry; Autran, Albert; Guerrot, Catherine; Fanning, Christopher; Laumonier, Bernard

Description

Depending on the quality of the zircon grains available for analysis, two methods may be used to date igneous rock emplacement, namely U-Pb TIMS with isotope dilution or in situ U-Pb SIMS (SHRIMP). Both methods have been used to determine, in a precise and accurate manner, the emplacement age of the granitic protolith of the various orthogneisses in the Pyrenean Axial Zone. More specifically, four representative samples of G1, G2 and a "transition gneiss" yielded reliable datings with an...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
URI: http://hdl.handle.net/1885/84060
Source: Bulletin De La Societe Geologique De France
DOI: 10.2113/176.3.269

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