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Magnesium isotopic compositions of igneous rocks could be potentially used to trace recycling of supracrustal materials. High-δ26Mg granitoids have been previously reported and explained to reflect the involvement of surface weathered materials in their sources. Low-δ26Mg granitoids, however, have not been reported. In this study, we report high-precision Mg isotopic analyses of Cenozoic alkaline...
The Linzizong volcanic succession (~65–45 Ma) and the coeval batholiths (~60−40 Ma) of andesitic to rhyolitic composition represent a magmatic response to the India–Asia continental collision that began at ~70–65 Ma and ended at ~45–40 Ma with convergence continuing to present. These syncollisional felsic magmatic rocks are widely distributed along much of the >1500 km long Gangdese Belt immediately...
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