Geochemical data for IODP U1485 sediments

This dataset supports Liu et al. (2026) and includes supplementary tables associated with geochemical analyses of sediments from IODP Site U1485, offshore northern New Guinea. The dataset comprises Sr–Nd–U isotopic compositions (Table S1), elemental compositions (Table S2), chemical compositions of bedrock endmembers (Table S3), and parameters used in the Sr box model (Table S4). These data underpin the interpretations of sediment provenance, silicate weathering, and lithologic controls discussed in the manuscript.