The Chicxulub asteroid impact and mass extinction at the Cretaceous-Paleogene boundary

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doi: 10.1126/science.1177265
Author(s): Schulte, Peter; Alegret, Laia; Arenillas, Ignacio; Arz, José A.; Barton, Penny J.; Bown, Paul R.; Bralower, Timothy J.; Christeson, Gail L.; Claeys, Philippe; Cockell, Charles S.; Collins, Gareth S.; Deutsch, Alexander; Goldin, Tamara J.; Goto, Kazuhisa; Grajales-Nishimura, José Manuel; Grieve, Richard A. F.; Gulick, Sean P. S.; Johnson, Kirk R.; Kiessling, Wolfgang; Koeberl, Christian; Kring, David A.; MacLeod, Kenneth G.; Matsui, Takafumi; Melosh, Jay; Montanari, Alessandro; Morgan, Joanna V.; Neal, Clive R.; Nichols, Douglas J.; Norris, Richard D.; Pierazzo, Elisabetta; Ravizza, Greg; Rebolledo-Vieyra, Mario; Reimold, Wolf Uwe; Robin, Eric; Salge, Tobias; Speijer, Robert P.; Sweet, Arthur R.; Urrutia-Fucugauchi, Jaime; Vajda, Vivi; Whalen, Michael T.; Willumsen, Pi S.
Author Affiliation(s): Primary:
Universität Erlangen-Nürnberg, GeoZentrum Nordbayern, Erlangen, Federal Republic of Germany
Other:
Universidad de Zaragoza, Spain
University of Cambridge, United Kingdom
University College London, United Kingdom
Pennsylvania State University, United States
University of Texas at Austin, United States
Vrije Universiteit Brussel, Belgium
Open University, United Kingdom
Imperial College London, United Kingdom
Universität Münster, Federal Republic of Germany
University of Vienna, Austria
Tohoku University, Japan
Instituto Mexicano del Petróleo, Mexico
Natural Resources Canada, Canada
Denver Museum of Nature and Science, United States
Humboldt University Berlin, Federal Republic of Germany
Universities Space Research Association-Lunar and Planetary Institute, United States
University of Missouri, United States
Chiba Institute of Technology, Japan
Purdue University, United States
Osservatorio Geologico di Coldigioco, Italy
University of Notre Dame, United States
Scripps Institution of Oceanography, United States
Planetary Science Institute, United States
University of Hawaii, Manoa, United States
Centro de Investigación Científica de Yucatán, Mexico
Université de Versailles, France
Bruker Nano GmbH, Federal Republic of Germany
Katholieke Universiteit Leuven, Belgium
Geological Survey of Canada, Canada
Universidad Nacional Autónoma de México, Mexico
Lund University, Sweden
University of Alaska, Fairbanks, United States
Volume Title: Science
Source: Science, 327(5970), p.1214-1218. Publisher: American Association for the Advancement of Science, Washington, DC, United States. ISSN: 0036-8075 CODEN: SCIEAS
Note: In English. 58 refs.; illus., incl. sect., sketch map
Summary: The Cretaceous-Paleogene boundary ∼65.5 million years ago marks one of the three largest mass extinctions in the past 500 million years. The extinction event coincided with a large asteroid impact at Chicxulub, Mexico, and occurred within the time of Deccan flood basalt volcanism in India. Here, we synthesize records of the global stratigraphy across this boundary to assess the proposed causes of the mass extinction. Notably, a single ejecta-rich deposit compositionally linked to the Chicxulub impact is globally distributed at the Cretaceous-Paleogene boundary. The temporal match between the ejecta layer and the onset of the extinctions and the agreement of ecological patterns in the fossil record with modeled environmental perturbations (for example, darkness and cooling) lead us to conclude that the Chicxulub impact triggered the mass extinction.
Year of Publication: 2010
Research Program: DSDP Deep Sea Drilling Project
ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Atlantic Ocean; Biomass; Biostratigraphy; C-13/C-12; Carbon; Cenozoic; Chicxulub Crater; Correlation; Cretaceous; Deep Sea Drilling Project; Ejecta; Foraminifera; Geochemistry; Global; Impacts; Invertebrata; Isotope ratios; Isotopes; K-T boundary; Lower Paleocene; Mass extinctions; Mesozoic; Microfossils; Mineral composition; Miospores; Ocean Drilling Program; Pacific Ocean; Paleocene; Paleogene; Palynomorphs; Pollen; Protista; Stable isotopes; Stratigraphic boundary; Tertiary; Upper Cretaceous; Yucatan Peninsula
Record ID: 2010041929
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute.

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