Contrasting source components of clastic metasedimentary rocks in the lowermost formations of the Barberton greenstone belt
Rare occurrences of clastic metasedimentary rocks within the lowermost stratigraphic units of the Barberton greenstone belt represent one of the few lines of evidence that argue for the existence of some component of evolved granitoid crust prior to formation of the lower greenstone belt sequence. This study has examined the field occurrence, petrography, geochemistry, and geochronology of these unique sedimentary rocks in order to place constraints on their provenance and tectonic setting. On...[Show more]
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