Marine Isotope Stage 4 in Australasia: a full glacial culminating 65,000 years ago - global connections and implications for human dispersal ...

• Main Authors: De Deckker, Patrick, Arnold, Lee, van der Kaars, Sander, Bayon, Germain, Stuut, Jan-Berend W, Perner, Kerstin, Lopes dos Santos, Raquel A, Uemura, Ryu, Demuro, Martina
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2018
• Subjects: International Marine Global Change Study IMAGES; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.896302; https://doi.pangaea.de/10.1594/PANGAEA.896302

Over the last four decades of palaeoclimate research, significant emphasis has been placed on the Last Glacial Maximum (LGM) spanning 26.5-19 thousand years ago (ka), a period that saw significant (~125 m) sea-level reductions and major ice caps adorning large parts of the Northern Hemisphere. Here, we present evidence for another major glacial period spanning 71-59 ka (Marine Isotope Stage 4: MIS4) from a well-dated marine sequence offshore South Australia. The astronomically-tuned chronology of this deep-sea core is confirmed using single-grain optically stimulated luminescence dating (OSL), providing confidence in our high-resolution age model. Our approach to the study of our MD03-2607 core has been to employ many different proxies. These are: d18O of both planktic and benthic foraminifera for stratigraphic purposes, faunal counts of planktonic foraminifera to reconstruct the position of oceanic fronts and currents, alkenone palaeothermometry, XRF core scanning to determine the presence of aeolian dust, ... : Supplement to: De Deckker, Patrick; Arnold, Lee; van der Kaars, Sander; Bayon, Germain; Stuut, Jan-Berend W; Perner, Kerstin; Lopes dos Santos, Raquel A; Uemura, Ryu; Demuro, Martina (2018): Marine Isotope Stage 4 in Australasia: a full glacial culminating 65,000 years ago - global connections and implications for human dispersal. Quaternary Science Reviews, 204, 187-207 ...