This supporting information includes four supporting tables (Table S1–S4). Table S1 shows sample information in this study and Tables S2–S4 show raw data of Sr-Nd isotopes, petrography, and heavy minerals. Sr-Nd isotopes were analyzed using a Neptune plus MC-ICP-MS at Tongji University. The 63–500 μm fractions of river sands were impregnated with araldite, cut into standard thin sections for petrography analysis and heavy minerals were separated by heavy liquid tribromomethane from the 63–250 μm fractions of the river sands. All the point-counting data were obtained under a Leica polarizing microscope at Xiamen University.