Planktic and benthic stable oxygen and carbon isotope, IRD, planktic foraminifera data and sand fraction content of sediment core PS1904-2 ...

• Main Authors: Telesiński, Maciej Mateusz, Bauch, Henning A, Spielhagen, Robert F
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: DEPTH, sediment/rock; Neogloboquadrina pachyderma, δ18O; Neogloboquadrina pachyderma, δ13C; Oridorsalis umbonatus, δ18O; Oridorsalis umbonatus, δ13C; Ice rafted debris; Foraminifera, planktic, subpolar; Foraminifera, planktic; Size fraction > 0.063 mm, sand; Kasten corer; Mass spectrometer, Finnigan, MAT 253; Counting >250 µm fraction; Counting 125-250 µm fraction; ARK-VII/1; Polarstern; Arctic; Arctic Ocean; Foraminifera*; Greenland; Ice Sheet; Kara Sea; Neogloboquadrina pachyderma; Nordic Seas; Sea ice; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.895535; https://doi.pangaea.de/10.1594/PANGAEA.895535

Sediment core PS1904 reveals continuous records of planktic and benthic foraminiferal stable isotopes (d18O/d13C) from the north-eastern Greenland continental margin. The data show good comparability with other records from the Nordic Seas, allowing the stratigraphic range of PS1904 to be dated to Marine Isotope Stage (MIS) 6. Focusing on MIS 5 reveals light d18O values during MIS 5a compared to the last interglacial peak (MIS 5e) which indicates that surface and bottom water layers were strongly affected by freshwater during the former event. We present two possible scenarios explaining the origin and routing of the freshwater: (i) drainage of a Eurasian proglacial lake coupled with the collapse of the Kara Sea Ice Sheet at the MIS 5b/a boundary, and (ii) destabilization and melting of the nearby Greenland Ice Sheet. Although both scenarios could have acted simultaneously, sediment records from the Eurasian sector of the Arctic Ocean hint at the proglacial lake system in north-western Siberia as the largest ... : Supplement to: Telesiński, Maciej Mateusz; Bauch, Henning A; Spielhagen, Robert F (2018): Causes and consequences of Arctic freshwater routing into the Nordic Seas during late Marine Isotope Stage 5. Journal of Quaternary Science, 33(7), 794-803 ...