A 1500-year record of mercury isotopes in seal feces documents sea ice changes in the Antarctic

The seal excrement sediment core HF4, 42.5 cm long, was collected from a terrestrial catchment (62º11'57"S, 59º58'48"W) of a depositional basin located in the second marine terrace with an altitude of 8 m and on the west coast of Fildes Peninsula, during the Eighteenth Chinese Antarctic Research Expedition (November 2001–March 2002). This dataset contains mercury concentration, mercury isotopes, and seal hair counts in HF4 sediment profiles.