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Episodic fresh surface waters in the Eocene Arctic Ocean

Author

Listed:
  • Henk Brinkhuis

    (Palaeoecology, Institute of Environmental Biology, Utrecht University)

  • Stefan Schouten

    (Royal Netherlands Institute for Sea Research (NIOZ))

  • Margaret E. Collinson

    (Royal Holloway University of London)

  • Appy Sluijs

    (Palaeoecology, Institute of Environmental Biology, Utrecht University)

  • Jaap S. Sinninghe Damsté

    (Royal Netherlands Institute for Sea Research (NIOZ)
    Utrecht University)

  • Gerald R. Dickens

    (Rice University)

  • Matthew Huber

    (Purdue University)

  • Thomas M. Cronin

    (USGS National Center)

  • Jonaotaro Onodera

    (Kyushu University)

  • Kozo Takahashi

    (Kyushu University)

  • Jonathan P. Bujak

    (Bujak Research International)

  • Ruediger Stein

    (Alfred Wegener Institute for Polar and Marine Research)

  • Johan van der Burgh

    (Palaeoecology, Institute of Environmental Biology, Utrecht University)

  • James S. Eldrett

    (Shell UK Exploration and Production)

  • Ian C. Harding

    (School of Ocean & Earth Science, Southampton Oceanography Centre, University of Southampton
    Earth Science, Southampton Oceanography Centre, University of Southampton)

  • André F. Lotter

    (Palaeoecology, Institute of Environmental Biology, Utrecht University)

  • Francesca Sangiorgi

    (Palaeoecology, Institute of Environmental Biology, Utrecht University
    Royal Netherlands Institute for Sea Research (NIOZ))

  • Han van Konijnenburg-van Cittert

    (Palaeoecology, Institute of Environmental Biology, Utrecht University
    National Museum of Natural History, ‘Naturalis’)

  • Jan W. de Leeuw

    (Palaeoecology, Institute of Environmental Biology, Utrecht University
    Royal Netherlands Institute for Sea Research (NIOZ))

  • Jens Matthiessen

    (Alfred Wegener Institute for Polar and Marine Research)

  • Jan Backman

    (Stockholm University)

  • Kathryn Moran

    (University of Rhode Island)

Abstract

The Cenozoic Arctic Ocean Little was known about the environmental history of the Arctic Ocean before the 2004 ACEX ocean drilling expedition. Now a 430-metre sea floor sediment core has been recovered and its analysis, reported this week, provides a 56-million-year climate record spanning the transition from a warm ‘greenhouse’ to a colder ‘icehouse’ world. Several key events are identified during the Cenozoic: surface waters during the Palaeocene/Eocene thermal maximum (55 million years ago) were much warmer than previous estimates; surface-water freshening confirms an intensified hydrological cycle about 49 million years ago; and the first ice-rafted debris occurred 45 million years ago, 35 million years earlier than was thought. The revised timings for the earliest Arctic cooling events coincide with those for Antarctica, supporting suggestions that global climate changed symmetrically about the poles.

Suggested Citation

  • Henk Brinkhuis & Stefan Schouten & Margaret E. Collinson & Appy Sluijs & Jaap S. Sinninghe Damsté & Gerald R. Dickens & Matthew Huber & Thomas M. Cronin & Jonaotaro Onodera & Kozo Takahashi & Jonathan, 2006. "Episodic fresh surface waters in the Eocene Arctic Ocean," Nature, Nature, vol. 441(7093), pages 606-609, June.
    • Handle: RePEc:nat:nature:v:441:y:2006:i:7093:d:10.1038_nature04692
    DOI: 10.1038/nature04692
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    Cited by:

    1. Keith R. Skene, 2021. "Sustainability policy and practice: Is Nature an appropriate mentor?," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 23(12), pages 18167-18185, December.

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