Time constraints for Mesoproterozoic upper amphibolite facies metamorphism in NW Namibia: a multi-isotopic approach.
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]
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|Source:||Earth and Planetary Science Letters|
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