Pleistocene organic matter modified by the Hiawatha impact, northwest Greenland

• Published in: Geology
• Main Authors: Garde, Adam A., Søndergaard, Anne Sofie, Guvad, Carsten, Dahl-Møller, Jette, Nehrke, Gernot, Sanei, Hamed, Weikusat, Christian, Funder, Svend, Kjær, Kurt H., Larsen, Nicolaj Krog
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Geological Society of America 2020
• Subjects: Arctic; Canadian Arctic Archipelago; Greenland; Kap; Kap København; Arctic Archipelago; glacier; Ice Sheet; North Greenland
• Online Access: https://epic.awi.de/id/eprint/52109/; https://doi.org/10.1130/G47432.1; https://hdl.handle.net/10013/epic.28efaaaa-a5d2-4442-818a-9e30774c9061

The 31-km-wide Hiawatha impact crater was recently discovered under the ice sheet in northwest Greenland, but its age remains uncertain. Here we investigate solid organic matter found at the tip of the Hiawatha Glacier to determine its thermal degradation, provenance, and age, and hence a maximum ag...