Petrogenesis of Early Paleozoic I-type granitoids in the Wuyi-Yunkai Orogen, South China: Implications for the tectono-magmatic evolution of the Cathaysia Block

•The Early Paleozoic I-type granites were generated through partial melting, magma mixing and fractional crystallization.•Mantle-derived magmas provided the heat and material for the formation of the granites.•The granites formed during an intracontinental orogeny.•The granites were related to the assembly of northern East Gondwana.