Neoproterozoic magmatism in the northern margin of the Yangtze Block, China: Implications for slab rollback in a subduction-related setting

•Northward migration of arc magmatism and formation of ca. 802–704 Ma and ca. 759–685 Ma magmatic suites.•The two magmatic suites show contrasting geochemical and Sr-Nd-Hf isotopic features.•Magmatism associated with slab rollback during Neoproterozoic oceanic subduction.