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Late Mesoproterozoic Arc and Back-arc Volcanism in the Heimefrontfjella (East Antarctica) and Implications for the Palaeogeography at the Southeastern Margin of the Kaapvaal-Grunehogna Craton

Bauer, Wolfgang; Jacobs, Jeffrey Bruce; Fanning, Christopher; Schmidt, R


The nunataks of Heimefrontfjella in Dronning Maud Land (Antarctica) are dominantly composed of juvenile late Mesoproterozoic rocks that were metamorphosed and deformed at about 1080 and 500 Ma. Three discontinuity-bound terranes have been identified, namely the Kottas, Sivorg and Vardeklettane terranes. In the Sivorg terrane the basement is mainly made up of fine-grained banded felsic and mafic gneisses, representing a metamorphosed bimodal volcanic sequence. In contrast, the basement in the...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Gondwana Research


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