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Geological record and reconstruction of the late Pliocene impact of the Eltanin asteroid in the Southern Ocean

Author

Listed:
  • R. Gersonde

    (Alfred Wegener Institute for Polar and Marine Research)

  • F. T. Kyte

    (Institute of Geophysics and Planetary Physics, UCLA)

  • U. Bleil

    (Fachbereich Geowissenschaften, University Bremen)

  • B Diekmann

    (Alfred Wegener Institute for Polar and Marine Research)

  • J. A. Flores

    (University of Salamanca)

  • K. Gohl

    (Macquarie University, School of Earth Sciences)

  • G. Grahl

    (Fachbereich Geowissenschaften, University Bremen)

  • R. Hagen

    (Naval Research Lab.-Code 7420)

  • G. Kuhn

    (Alfred Wegener Institute for Polar and Marine Research)

  • F. J. Sierro

    (University of Salamanca)

  • D. Völker

    (Fachbereich Geowissenschaften, University Bremen)

  • A Abelmann

    (Alfred Wegener Institute for Polar and Marine Research)

  • J. A. Bostwick

    (Institute of Geophysics and Planetary Physics, UCLA)

Abstract

In 1995, an expedition on board the research vessel FS Polarstern explored the impact site of the Eltanin asteroid in the Southern Ocean, the only known asteroidimpact into a deep ocean basin. Analyses of the geological record of the impact region place the event in the late Pliocene (∼2.15 Myr) and constrain thesize of the asteroid to be >1 km. The explosive force inferred for this event places it at the threshold of impacts believed to have global consequences, and its studyshould therefore provide a baseline for the reconstruction and modelling of similar events, which are common on geological timescales.

Suggested Citation

  • R. Gersonde & F. T. Kyte & U. Bleil & B Diekmann & J. A. Flores & K. Gohl & G. Grahl & R. Hagen & G. Kuhn & F. J. Sierro & D. Völker & A Abelmann & J. A. Bostwick, 1997. "Geological record and reconstruction of the late Pliocene impact of the Eltanin asteroid in the Southern Ocean," Nature, Nature, vol. 390(6658), pages 357-363, November.
    • Handle: RePEc:nat:nature:v:390:y:1997:i:6658:d:10.1038_37044
    DOI: 10.1038/37044
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