Sediment cores from the East Antarctic Continental Margin from the Polarstern Cruise PS128 'EASI-1' in 2022. These cores have been taken with gravity and piston corers from the outer-Nielsen Basin and Iceberg Alley – cross-shelf palaeo-ice stream troughs – that are used to contribute to a reliable spatiotemporal framework of past grounding line dynamics since the LGM and to establish detailed facies analyses for describing past environmental change across the shelf. The sediment samples from the different cores were analysed in the lab at the Alfred Wegener Institute, Bremerhaven, Germany, for their geochemical, sedimentological and sediment-physical properties. For some of the cores, AMS 14C dating has been done at the MICADAS Lab at the Alfred Wegener Institute, Bremerhaven, Germany.