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      An appraisal of the ages of Phanerozoic large igneous provinces

      , , ,
      Earth-Science Reviews
      Elsevier BV

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          Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology

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            Global Multi-Resolution Topography synthesis

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

              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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                Author and article information

                Journal
                Earth-Science Reviews
                Earth-Science Reviews
                Elsevier BV
                00128252
                February 2023
                February 2023
                : 237
                : 104314
                Article
                10.1016/j.earscirev.2023.104314
                21421b69-d272-44b4-b315-91b86becda72
                © 2023

                https://www.elsevier.com/tdm/userlicense/1.0/

                https://doi.org/10.15223/policy-017

                https://doi.org/10.15223/policy-037

                https://doi.org/10.15223/policy-012

                https://doi.org/10.15223/policy-029

                https://doi.org/10.15223/policy-004

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