Dataset: Geochemical - mineralogical constraints on the provenance of sediment supplied from South African river catchments draining into the southwestern Indian Ocean

Supplementary Information Table 1 from manuscript submitted: Geochemical - mineralogical constraints on the provenance of sediment supplied from South African river catchments draining into the southwestern Indian Ocean. This table provides the bedrock geology data for each river catchment between Durban and Cape Town, South Africa which was required for the endmember mixing model discussed in the submitted manuscript. This data can be used for endmember mixing calculations or for GIS. Additionally we also provide grain size measurements from the South African river sediments.