Single-zircon geochronology and Nd isotopic systematics of Proterozoic high-grade rocks from the Mozambique belt of southern Tanzania (Masasi area): Implications for Gondwana assembly

From: Journal of the Geological Society | Date: September 1, 2003| Author: | Copyright information

Abstract: The Mozambique belt of southern Tanzania is underlain by locally restricted 1100-950 Ma (late Kibaran) granitoid gneisses that were derived from remelting of Archaean continental crust, as suggested by Nd isotopic systematics. These rocks were deformed and metamorphosed during an intense Neoproterozoic (Pan-African) event at around 630 Ma together with tectonically interlayered and widespread 800-650 Ma granitoid gneisses and minor clastic metasediments. The 800-650 Ma granitoids were derived predominantly from Neoproterozoic juvenile melts. There is no evidence for pre-800 Ma ...

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