Geochronological and geochemical constraints on the subduction-modified lithospheric origin of the early Cretaceous volcanic rocks, in the western North Huaiyang Belt of Dabie Orogen, China

Geochronological, elemental and Sr–Nd–Hf isotopic data for intermediate–acid volcanic sequences from the western North Huaiyang Belt of the Dabie Orogen, China, provide new constraints for the nature of the lithosphere and the potential involvement of subducted Yangtze crust. These rocks are calc-alkaline andesite, trachyandesite and dacite. They yield ages of 129–127 Ma and show a geochemical affinity to arc volcanic rocks. (87Sr/86Sr)i ratios...