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Genesis of the Tonian Imorona–Itsindro magmatic Suite in central Madagascar: Insights from U–Pb, oxygen and hafnium isotopes in zircon

Archibald, Donnelly B.; Collins, Alan S.; Foden, John D.; Payne, Justin L.; Holden, Peter; Razakamanana, Théodore; De Waele, Bert; Thomas, Robert J.; Pitfield, Peter E.J.

Description

Madagascar occupies an important location within the East African Orogen (EAO). The EAO comprises an assemblage of Neoproterozoic microcontinents and arc terranes lodged between older cratonic blocks during the final assembly of the supercontinent Gondwana. The Imorona–Itsindro Suite of central Madagascar represents voluminous Tonian-aged (850–750 Ma) magmatism with controversial petrogenesis. Early work proposed arc magma generation coinciding with oceanic plate subduction during closure of...[Show more]

CollectionsANU Research Publications
Date published: 2016-08
Type: Journal article
URI: http://hdl.handle.net/1885/107213
Source: Precambrian Research
DOI: 10.1016/j.precamres.2016.05.014

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