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Life before impact in the Chicxulub area: unique marine ichnological signatures preserved in crater suevite.
Rodríguez-Tovar, Francisco J; Kaskes, Pim; Ormö, Jens; Gulick, Sean P S; Whalen, Michael T; Jones, Heather L; Lowery, Christopher M; Bralower, Timothy J; Smit, Jan; King, David T; Goderis, Steven; Claeys, Philippe.
Afiliação
  • Rodríguez-Tovar FJ; Departamento de Estratigrafía y Paleontología, Universidad de Granada, Granada, Spain. fjrtovar@ugr.es.
  • Kaskes P; Research Unit: Analytical, Environmental and Geo-Chemistry, Department of Chemistry, Vrije Universiteit Brussel, AMGC-WE-VUB, Pleinlaan 2, 1050, Brussels, Belgium.
  • Ormö J; Laboratoire G-Time, Université Libre de Bruxelles, Av. F.D. Roosevelt 50, 1050, Brussels, Belgium.
  • Gulick SPS; Centro de Astrobiologia CSIC-INTA, Torrejon de Ardoz, Spain.
  • Whalen MT; Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, USA.
  • Jones HL; Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, USA.
  • Lowery CM; Center for Planetary Systems Habitability, University of Texas at Austin, Austin, USA.
  • Bralower TJ; Department of Geosciences, University of Alaska Fairbanks, Fairbanks, AK, USA.
  • Smit J; Department of Geosciences, The Pennsylvania State University, College town, USA.
  • King DT; Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, USA.
  • Goderis S; Department of Geosciences, The Pennsylvania State University, College town, USA.
  • Claeys P; Faculty of Sciences (FALW), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Sci Rep ; 12(1): 11376, 2022 07 05.
Article em En | MEDLINE | ID: mdl-35790847
To fully assess the resilience and recovery of life in response to the Cretaceous-Paleogene (K-Pg) boundary mass extinction ~ 66 million years ago, it is paramount to understand biodiversity prior to the Chicxulub impact event. The peak ring of the Chicxulub impact structure offshore the Yucatán Peninsula (México) was recently drilled and extracted a ~ 100 m thick impact-generated, melt-bearing, polymict breccia (crater suevite), which preserved carbonate clasts with common biogenic structures. We pieced this information to reproduce for the first time the macrobenthic tracemaker community and marine paleoenvironment prior to a large impact event at the crater area by combining paleoichnology with micropaleontology. A variable macrobenthic tracemaker community was present prior to the impact (Cenomanian-Maastrichtian), which included soft bodied organisms such as annelids, crustaceans and bivalves, mainly colonizing softgrounds in marine oxygenated, nutrient rich, conditions. Trace fossil assemblage from these upper Cretaceous core lithologies, with dominant Planolites and frequent Chondrites, corresponds well with that in the overlying post-impact Paleogene sediments. This reveals that the K-Pg impact event had no significant effects (i.e., extinction) on the composition of the macroinvertebrate tracemaker community in the Chicxulub region.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Meteoroides / Extinção Biológica País/Região como assunto: Mexico Idioma: En Revista: Sci Rep Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Espanha País de publicação: Reino Unido
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: Meteoroides / Extinção Biológica País/Região como assunto: Mexico Idioma: En Revista: Sci Rep Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Espanha País de publicação: Reino Unido