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

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,...

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Bibliographic Details
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
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Summary: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 ...

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