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      Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum

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          Abstract

          Although geological and modelling evidence indicate that the last glacial inception in North America was in NE Canada, little is known about the glacial response of the nearby western Greenland Ice Sheet (GIS) during the glacial advance of marine oxygen isotope stage 4 (MIS4). Our multi-proxy study of a marine sediment core collected about 60 km southwest of the Outer Hellefisk Moraines demonstrates that in the southern Davis Strait region the most extreme Greenland shelf glaciation of the last glacial cycle occurred during MIS 4, with another prominent glacial advance at 37–33 kyr BP. During those periods the GIS likely reached the Outer Hellefisk Moraines in this area. Except for these two periods, our data suggest significant advection of relatively warm Irminger Sea Water by the West Greenland Current since MIS 4. This advection likely limited the extent of the MIS2 glaciation on the SW Greenland shelf. Decreased precipitation over southwestern Greenland predicted by atmospheric models as a downstream effect of a much larger MIS2 Laurentide Ice Sheet may have played an additional role.

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          A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records

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            Age dating and the orbital theory of the ice ages: Development of a high-resolution 0 to 300,000-year chronostratigraphy

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              Origin and consequences of cyclic ice rafting in the Northeast Atlantic Ocean during the past 130,000 years

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                Author and article information

                Contributors
                mss@geo.au.dk
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                30 October 2019
                30 October 2019
                2019
                : 9
                : 15617
                Affiliations
                [1 ]ISNI 0000 0001 1956 2722, GRID grid.7048.b, Department for Geoscience, , Aarhus University, ; Høegh-Guldbergs Gade 2, 8000 Aarhus C, Denmark
                [2 ]ISNI 0000 0001 1017 5662, GRID grid.13508.3f, Geological Survey of Denmark and Greenland (GEUS), ; Øster Voldgade 10, 1350 Copenhagen K, Denmark
                [3 ]ISNI 0000 0001 1956 2722, GRID grid.7048.b, Aarhus AMS Centre, Department of Physics and Astronomy, , Aarhus University, ; Ny Munkegade 120, 8000 Aarhus C, Denmark
                [4 ]Department of Earth Sciences, University of Gothenburg, Sweden, Denmark
                [5 ]DJ Miljø & Geoteknik, Falkevej 12, 3400 Hillerød, Denmark
                [6 ]25 Coleherne Road, Earls Court, SW10 9BS London, United Kingdom
                [7 ]ISNI 0000 0004 1936 9457, GRID grid.8993.b, Department of Earth Science, , Uppsala University, ; Villavägen 16, 75236 Uppsala, Sweden
                Author information
                http://orcid.org/0000-0002-1973-5969
                http://orcid.org/0000-0002-4445-5520
                http://orcid.org/0000-0002-4866-3204
                Article
                51983
                10.1038/s41598-019-51983-3
                6821744
                31666580
                3ae33519-5c98-4052-af7d-7e676f35bbe2
                © The Author(s) 2019

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 31 May 2019
                : 11 October 2019
                Funding
                Funded by: FundRef https://doi.org/10.13039/501100004836, Det Frie Forskningsråd (Danish Council for Independent Research);
                Award ID: 7014-00113B
                Award Recipient :
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                © The Author(s) 2019

                Uncategorized
                palaeoclimate,palaeoceanography
                Uncategorized
                palaeoclimate, palaeoceanography

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