The Siderian-Orosirian magmatism in the Gavião Paleoplate, Brazil: U-Pb geochronology, geochemistry and tectonic implications
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文摘

Twenty-nine Siderian-Rhyacian-Orosirian granitoids were recognized in the southern Gavião Paleoplate.

In Gavião Paleoplate the age of Ryacian-Orosirian magmatism ranges between 1944 ± 7 and 2140 ± 9 Ma.

Data suggest that some rocks were generated in subduction environment.

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