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      Chicxulub Crater Joint Gravity and Magnetic Anomaly Analysis: Structure, Asymmetries, Impact Trajectory and Target Structures

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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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            The formation of peak rings in large impact craters

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              Mapping the Chicxulub Impact Stratigraphy and Peak Ring Using Drilling and Seismic Data

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                Author and article information

                Journal
                Pure and Applied Geophysics
                Pure Appl. Geophys.
                Springer Science and Business Media LLC
                0033-4553
                1420-9136
                August 2022
                June 10 2022
                August 2022
                : 179
                : 8
                : 2735-2756
                Article
                10.1007/s00024-022-03074-0
                f55c92e9-8cac-4a09-a53b-246a94300a39
                © 2022

                https://www.springer.com/tdm

                https://www.springer.com/tdm

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