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Size and morphology of the Chicxulub impact crater

Author

Listed:
  • Jo Morgan

    (Imperial College)

  • Mike Warner

    (Imperial College)

  • the Chicxulub Working Group
  • John Brittan

    (Imperial College)

  • Richard Buffler

    (University of Texas Institute for Geophysics)

  • Antonio Camargo

    (Petroleos Mexicanos)

  • Gail Christeson

    (University of Texas Institute for Geophysics)

  • Paul Denton

    (University of Leicester)

  • Alan Hildebrand

    (Geological Survey of Canada)

  • Richard Hobbs

    (BIRPS, Bullard Laboratories, University of Cambridge)

  • Hamish Macintyre

    (Imperial College)

  • Graeme Mackenzie

    (University of Leicester)

  • Peter Maguire

    (University of Leicester)

  • Luis Marin

    (Universidad Nacional Autonoma de Mexico)

  • Yosio Nakamura

    (University of Texas Institute for Geophysics)

  • Mark Pilkington

    (Geological Survey of Canada)

  • Virgil Sharpton

    (Lunar and Planetary Institute)

  • Dave Snyder

    (BIRPS, Bullard Laboratories, University of Cambridge)

  • Gerardo Suarez

    (Universidad Nacional Autonoma de Mexico)

  • Alberto Trejo

    (Universidad Nacional Autonoma de Mexico)

Abstract

The Chicxulub impact in Mexico has been linked to the mass extinction of species at the end of the Cretaceous period. From seismic data collected across the offshore portion of the impact crater, the diameter of the transient cavity is determined to be about 100 km. This parameter is critical for constraining impact-related effects on the Cretaceous environment, with previous estimates of the cavity diameter spanning an order of magnitude in impact energy. The offshore seismic data indicate that the Chicxulub crater has a multi-ring basin morphology, similar to large impact structures observed on other planets, such as Venus.

Suggested Citation

  • Jo Morgan & Mike Warner & the Chicxulub Working Group & John Brittan & Richard Buffler & Antonio Camargo & Gail Christeson & Paul Denton & Alan Hildebrand & Richard Hobbs & Hamish Macintyre & Graeme M, 1997. "Size and morphology of the Chicxulub impact crater," Nature, Nature, vol. 390(6659), pages 472-476, December.
    • Handle: RePEc:nat:nature:v:390:y:1997:i:6659:d:10.1038_37291
    DOI: 10.1038/37291
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