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Time constraints for Mesoproterozoic upper amphibolite facies metamorphism in NW Namibia: a multi-isotopic approach.

Seth, Barbara; Armstrong, Richard; Buttner, Annett; Villa, Igor M


This study presents the chronological evolution of the upper amphibolite facies Orue Unit in NW Namibia. Metasedimentary and meta-igneous rocks of the Orue Unit were investigated using the Pb-Pb stepwise leaching technique on garnet and rutile, U-Pb multi-grain analysis on rutile, Sm-Nd-Lu-Hf leaching technique on garnet, SHRIMP analysis on zircon and Ar-Ar dating on amphibole. Each of these techniques pertains to different processes that occurred before, during, or after the metamorphic peak....[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Earth and Planetary Science Letters
DOI: 10.1016/j.epsl.2004.11.022


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