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Improved Pleistocene sediment stratigraphy and paleoenvironmental implications for the western Arctic Ocean off the East Siberian and Chukchi margins

  • Michael Schreck
  • Seung-Il Nam
  • L. Polyak
  • C. Vogt
  • G.-S. Kong
  • R. Stein
  • J. Matthiessen
  • F. Niessen
Original Article
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Abstract

Sediment cores from the East Siberian and Chukchi margins and adjacent basins are used to refine the upper Pleistocene stratigraphy and better constrain the timing of major glacial advances in the western Arctic Ocean. Cores have been analysed using high-resolution non-destructive physical properties (density, magnetic susceptibility and colour) and X-ray fluorescence elemental measurements (manganese and calcium contents). All analysed cores reveal a spatially coherent stratigraphic pattern that enables robust correlations from the East Siberian margin to the Mendeleev and Northwind Ridges, thus highlighting the potential of such multiproxy approach for improving stratigraphic framework. The distribution of sedimentary units resulting from core correlation indicates decreasing sedimentation rates by more than one order of magnitude from the East Siberian margin east- and northwards, reflecting an increased distance from the main sediment sources, increasing sea-ice cover, and longer residence times in the Beaufort Gyre circulation. The stratigraphy presented, consistent with existing geophysical data, indicates the most recent major glacial advance from the East Siberian margin with ice grounding at water depth > 800 m during estimated Marine Isotope Stages 4/3, roughly contemporaneous with the Middle Weichselian glaciation in northern Eurasia. Earlier glacial events are potentially indicated by glaciogenic units in cores away from the margin, where they are not overprinted by a younger ice advance. Sediment thickness increase towards the Siberian margin also suggests the possibility of a limited MIS 2 glaciation, although no direct evidence for such an ice sheet has been found thus far.

Keywords

Arctic Ocean Non-destructive measurements Stratigraphy Middle and Late Weichselian glaciation 

Notes

Acknowledgements

We would like to thank the captain and crew of RV Araon and RV Polarstern for excellent collaboration and support during expeditions ARA03B, ARA06B, and PS72. Work on this paper was funded by the Seed-type Research Program (no. PE18350) of the Korea Polar Research Institute. LP was supported by the US National Science Foundation awards ARC-0806999 and ARC-1304755. In addition, this paper is a contribution to the AWI Research Program PACES II, 3.1 and 3.2. Comments from two anonymous reviewers helped improving this manuscript.

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Supplementary material

41063_2018_57_MOESM1_ESM.pdf (28 kb)
Supplementary Table 1: Summary of radiocarbon ages and amino-acid racemization ages shown in Figure 2. Uncalibrated 14C ages are from ref. 39 (ARC2-M03), from ref. 34 (HLY0503-08JPC), from ref. 40 (P1-92AR-P25), and from ref. 12 (NP26). Amino-acid racemization ages are from ref. 50 (HLY0503-08JPC), and ref. 40 (P1-92AR-P25). Please note that Fig. 2 shows calibrated 14C ages according to calibrations given in the respective publications (PDF 27 KB)
41063_2018_57_MOESM2_ESM.pdf (48 kb)
Supplementary Table 2: Summary of sediment thickness data shown in Figure 8 (PDF 47 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Michael Schreck
    • 1
    • 2
  • Seung-Il Nam
    • 2
  • L. Polyak
    • 3
  • C. Vogt
    • 4
  • G.-S. Kong
    • 5
  • R. Stein
    • 6
  • J. Matthiessen
    • 6
  • F. Niessen
    • 6
  1. 1.Department of GeosciencesUiT The Arctic University of NorwayTromsøNorway
  2. 2.Division of Polar PaleoenvironmentKorea Polar Research InstituteIncheonRepublic of Korea
  3. 3.Byrd Polar and Climate Research CenterThe Ohio State UniversityColumbusUSA
  4. 4.Fachbereich GeowissenschaftenUniversity BremenBremenGermany
  5. 5.Korea Institute for Geoscience and Mineral ResourcesDaejeon 305-350Republic of Korea
  6. 6.Alfred Wegener InstituteHelmholtz Centre for Polar and Marine ResearchBremerhavenGermany

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