Size and morphology of the Chicxulub impact crater

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 Mackenzie, Peter Maguire, Luis Marin, Yosio Nakamura, Mark Pilkington, Virgil Sharpton, Dave Snyder, Gerardo Suarez and Alberto Trejo
Additional contact information
Jo Morgan: Imperial College
Mike Warner: Imperial College
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

Nature, 1997, vol. 390, issue 6659, 472-476

Abstract: 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.

Date: 1997
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DOI: 10.1038/37291

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