气候变化领域集成服务门户(CCPortal): Marine Isotope Stage 4 in Australasia: A full glacial culminating 65;000 years ago – Global connections and implications for human dispersal

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DOI	10.1016/j.quascirev.2018.11.017
	Marine Isotope Stage 4 in Australasia: A full glacial culminating 65;000 years ago – Global connections and implications for human dispersal
	De Deckker P.; Arnold L.J.; van der Kaars S.; Bayon G.; Stuut J.-B.W.; Perner K.; Lopes dos Santos R.; Uemura R.; Demuro M.
发表日期	2019
ISSN	0277-3791
起始页码	187
结束页码	207
卷号	204
英文摘要	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: δ18O 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, and εNd isotope to identify fluvial discharge over the core site. We compare our new proxy findings with other archives for mainland Australia and Tasmania. Our multi-proxy palaeoclimate reconstructions are consistent with other marine, terrestrial and cryosphere archives across the Southern Hemisphere and suggest, for the first time, that MIS 4 was almost as dramatic as the LGM. During MIS4, global sea-level was reduced by ∼100 m, glaciers across Australasia were more significant compared to the LGM, and sea-surface temperatures were much reduced. These glacial conditions uniformly peaked around 65 ka. Global comparisons show major glacial conditions and vegetation shifts elsewhere during MIS4, but many are poorly dated. The significant environmental changes taking place during this glacial period were paralleled by waves of human dispersal across Eurasia and the earliest evidence of human occupation in northern Australia at 65 ka. © 2018 Elsevier Ltd
英文关键词	Airborne dust; Deuterium excess; Glaciation; Human migration; LGM; MIS4; Penultimate glaciation; Sea level; Sea-surface temperature; Single-grain OSL dating; STCZ
语种	英语
scopus关键词	Atmospheric temperature; Dust; Isotopes; Luminescence; Offshore oil well production; Sea level; Stratigraphy; Submarine geophysics; Surface properties; Surface waters; Airborne dusts; Deuterium excess; Glaciation; Human migration; MIS4; OSL dating; Penultimate glaciation; Sea surface temperature (SST); STCZ; Glacial geology; alkenone; benthic foraminifera; biochronology; cryosphere; glaciation; ice cap; Last Glacial Maximum; luminescence dating; marine isotope stage; migration; Northern Hemisphere; oceanic current; oceanic front; paleoclimate; planktonic foraminifera; sea level change; sea surface temperature; Southern Hemisphere; Australasia; Australia; Eurasia; South Australia; Tasmania; Foraminifera
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152048
作者单位	Research School of Earth Sciences, The Australian National University, Canberra, ACT 2601, Australia; School of Physical Sciences, The Environment Institute and the Institute for Photonics and Advanced Sensing, University of Adelaide, Adelaide, South Australia 5005, Australia; School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia; Cluster Earth & Climate, Faculty of Earth and Life Sciences, Vrije Universiteit, Amsterdam, HV 1081, Netherlands; IFREMER, Marine Geosciences Unit, CS 10070, Plouzané, 29280, France; NIOZ - Royal Netherlands Institute for Sea Research, Utrecht University, P.O. Box 59, Den Burg, AB 1790, Netherlands; Uni Research Klima & Bjerknes Centre for Climate Research, Jahnebakken 5, Bergen, 5033, Norway; Leibniz Institute for Baltic Sea Research, 15 Seestrasse, Rostock, 18119, Germany; British Geological Survey, Centre for Environmental Geochemistry, Keyworth, Nottingham, NG12 5GG, United Kingdom; Department of Chemistry, Biology, and Marine Scie...
推荐引用方式 GB/T 7714	De Deckker P.,Arnold L.J.,van der Kaars S.,等. Marine Isotope Stage 4 in Australasia: A full glacial culminating 65;000 years ago – Global connections and implications for human dispersal[J],2019,204.
APA	De Deckker P..,Arnold L.J..,van der Kaars S..,Bayon G..,Stuut J.-B.W..,...&Demuro M..(2019).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.
MLA	De Deckker P.,et al."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(2019).