Amphibolite facies rocks may preserve the protolith ages of the associated granulite facies rocks, as in the present case, and this is relevant to severely deformed units such as the Santa Maria Chico ...

Here, we revitalize the Sítio Largo amphibolite by indicating its basaltic affiliation. We present new results of U-Pb dating of zircon and rutile that show that the amphibolite protolith, which ...

U-Pb dating of zircon was undertaken with the Beijing SHRIMP II (sensitive high resolution ion microprobe) on anamphibolite facies granodiorite and an almandine-albite granulite from the Santa Maria ...