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Cold spells in the Nordic Seas during the early Eocene Greenhouse

Author

Listed:
  • Madeleine L. Vickers

    (IGN, University of Copenhagen)

  • Sabine K. Lengger

    (Plymouth University)

  • Stefano M. Bernasconi

    (ETH Zurich, Geologisches Institut)

  • Nicolas Thibault

    (IGN, University of Copenhagen)

  • Bo Pagh Schultz

    (Museum Salling, Fur Museum)

  • Alvaro Fernandez

    (University of Bergen)

  • Clemens V. Ullmann

    (University of Exeter, Penryn Campus)

  • Paul McCormack

    (Plymouth University)

  • Christian J. Bjerrum

    (IGN, University of Copenhagen)

  • Jan Audun Rasmussen

    (Museum Mors, Fossil- and Mo-clay Museum)

  • Iben Winther Hougård

    (IGN, University of Copenhagen)

  • Christoph Korte

    (IGN, University of Copenhagen)

Abstract

The early Eocene (c. 56 - 48 million years ago) experienced some of the highest global temperatures in Earth’s history since the Mesozoic, with no polar ice. Reports of contradictory ice-rafted erratics and cold water glendonites in the higher latitudes have been largely dismissed due to ambiguity of the significance of these purported cold-climate indicators. Here we apply clumped isotope paleothermometry to a traditionally qualitative abiotic proxy, glendonite calcite, to generate quantitative temperature estimates for northern mid-latitude bottom waters. Our data show that the glendonites of the Danish Basin formed in waters below 5 °C, at water depths of

Suggested Citation

  • Madeleine L. Vickers & Sabine K. Lengger & Stefano M. Bernasconi & Nicolas Thibault & Bo Pagh Schultz & Alvaro Fernandez & Clemens V. Ullmann & Paul McCormack & Christian J. Bjerrum & Jan Audun Rasmus, 2020. "Cold spells in the Nordic Seas during the early Eocene Greenhouse," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18558-7
    DOI: 10.1038/s41467-020-18558-7
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