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Neoproterozoic extension in the greater dharwar craton: A reevaluation of the "betsimisaraka suture" in madagascarn

Tucker, R.D.; Roig, J Y; Delor, Claude; Amelin, Yuri; Goncalves, P.; Rabarimanana, M.H.; Ralison, A.V.; Belcher, R.W.

Description

The Precambrian shield of Madagascar is reevaluated with recently compiled geological data and new U-Pb sensitive high-resolution ion microprobe (SHRIMP) geochronology. Two Archean domains are recognized: the eastern Antongil-Masora domain and the central Antananarivo domain, the latter with distinctive belts of metamafic gneiss and schist (Tsaratanana Complex). In the eastern domain, the period of early crust formation is extended to the Paleo-Mesoarchean (3.32-3.15 Ga) and a supracrustal...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/67244
Source: Canadian Journal of Earth Sciences
DOI: 10.1139/E10-034

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