Geochemistry and provenance of siliciclastic rocks from the Mesoproterozoic Upper Vazante Sequence, Brazil: Insights on the evolution of the southwestern margin of the São Francisco Craton and the Columbia Supercontinent
Precambrian Research(2019)
摘要
•Integration of lithogeochemistry and detrital zircon U – Pb dates to constrain provenance.•Upper Vazante detritus derived mainly from Paleoproterozoic continental arc rocks.•Sediments were deposited in a Mesoproterozoic rift.•This region was involved in buildup and breakup of Columbia Supercontinent.
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关键词
siliciclastic rocks,são francisco craton,mesoproterozoic upper vazante sequence,southwestern margin,geochemistry
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