The first day of the Cenozoic

  title={The first day of the Cenozoic},
  author={Sean P. S. Gulick and Timothy J. Bralower and Jens Orm{\"o} and Brendon Hall and Kliti Grice and Bettina Schaefer and Shelby L. Lyons and Katherine H. Freeman and Joanna V. Morgan and Natalia Artemieva and Pim Kaskes and Sietze J. de Graaff and Michael T. Whalen and Gareth S. Collins and Sonia M. Tikoo and Christina M. Verhagen and Gail L. Christeson and Philippe Claeys and Marco J. L. Coolen and Steven Goderis and Kazuhisa Goto and Richard A. F. Grieve and Naoma McCall and Gordon R. Osinski and Auriol S. P. Rae and Ulrich Riller and Jan Smit and Vivi Vajda and Axel Wittmann},
  journal={Proceedings of the National Academy of Sciences},
  pages={19342 - 19351}
Significance Chicxulub impact crater cores from the peak ring include ∼130 m of impact melt rock and breccia deposited on the first day of the Cenozoic. Within minutes of the impact, fluidized basement rocks formed a ring of hills, which were rapidly covered by ∼40 m of impact melt and breccia. Within an hour, ocean waters flooded the deep crater through a northeast embayment, depositing another 90 m of breccia. Within a day, a tsunami deposited material from distant shorelines, including… 

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