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Growth of early continental crust by partial melting of eclogite

Rapp, Robert; Shimizu, Nobumichi; Norman, Marc


The tectonic setting in which the first continental crust formed, and the extent to which modern processes of arc magmatism at convergent plate margins were operative on the early Earth, are matters of debate. Geochemical studies have shown that felsic rocks in both Archaean high-grade metamorphic ('grey gneiss') and low-grade granite-greenstone terranes are comprised dominantly of sodium-rich granitoids of the tonalite-trondhjemite-granodiorite (TTG) suite of rocks. Here we present direct...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Nature
DOI: 10.1038/nature02031


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