The dataset provides information on microplastics particles identified in a sediment core from Disko Bay, Greenland, collected in August 2015 and dated back to 1930. This sediment core was used for the reconstruction of microplastic accumulation in the Anthropocene. The sediment layers were dated radiometically (Lead-210 and Americium-241), extracted and identified via µ-FTIR.The table contains particle count, mass, polymer type, number of particles per polymer type, sediment layer (depth), which corresponds to a specific year, and microplastics accumulation in number of particles/Kg d.w. This datasets is complementary to https://doi.pangaea.de/10.1594/PANGAEA.972712, https://doi.pangaea.de/10.1594/PANGAEA.972713, and the limits of detection are in https://doi.pangaea.de/10.1594/PANGAEA.972709.