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The Chicxulub asteroid impact and mass extinction at the Cretaceous-Paleogene boundary.
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 M; 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.
Afiliação
  • Schulte P; GeoZentrum Nordbayern, Universität Erlangen-Nürnberg, Schlossgarten 5, D-91054 Erlangen, Germany. schulte@geol.uni-erlangen.de
Science ; 327(5970): 1214-8, 2010 Mar 05.
Article em En | MEDLINE | ID: mdl-20203042
The Cretaceous-Paleogene boundary approximately 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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Planetas Menores / Extinção Biológica / Fósseis Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Science Ano de publicação: 2010 Tipo de documento: Article País de afiliação: Alemanha País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Planetas Menores / Extinção Biológica / Fósseis Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Science Ano de publicação: 2010 Tipo de documento: Article País de afiliação: Alemanha País de publicação: Estados Unidos