Crust-derived felsic magmatism in the Emeishan large igneous Province: New evidence from zircon U-Pb-Hf-O isotope from the Yangtze Block, China

•Mafic dyke and I-type granite emplaced coevally at ca. 259 Ma.•Hf-O isotope data indicate granite formation by partial melting of Neoproterozoic juvenile crust.•Magma partly contaminated with weathered ancient crustal components.•Heat source provided by the mafic–ultramafic magmas from mantle plume.