Greater supply of Patagonian-sourced detritus and transport by the ACC to the Atlantic sector of the Southern Ocean during the last glacial period

► We examine temporal changes in detrital flux and provenance to the Southern Ocean. ► Compared to the isotope composition of detritus from potential source regions. ► High glacial detrital fluxes resulted from increased sediment supply from Patagonia. ► ACC controls the detrital dispersal with increased transport during the glacial.