Two large meteorite impacts at the Cretaceous-Paleogene boundary

David Jolley, Iain Gilmour, Eugene Gurov, Simon Kelley, Jonathan Watson

Research output: Contribution to journalArticle

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Abstract

The end Cretaceous mass exinction has been attributed to a single asteroid impact at Chicxulub on the Yucatan peninsula, Mexico. The discovery of a second smaller crater at Boltysh in the Ukraine with a similar age has raised the possibility that a shower of asteroids or comets impacted Earth close to the K/Pg boundary. Here we present palynological and d13C evidence from crater fill sediments in the Boltysh impact crater. Our analyses demonstrate that a post-impact flora formed on the ejecta layer, was in turn devastated by the K/Pg events. The sequence of floral recovery from the K/Pg event is directly comparable with that in mid North America. We conclude that the Boltysh crater pre-dated Chicxulub by as little as 2,000 years, a timescale that constrains the likely origin of the bodies that formed the two known K/Pg craters.
Original languageEnglish
Pages (from-to)835-838
Number of pages4
JournalGeology
Volume38
Issue number9
DOIs
Publication statusPublished - Sep 2010

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meteorite
crater
asteroid
ejecta
comet
flora
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Cretaceous
timescale
sediment

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Jolley, D., Gilmour, I., Gurov, E., Kelley, S., & Watson, J. (2010). Two large meteorite impacts at the Cretaceous-Paleogene boundary. Geology, 38(9), 835-838. https://doi.org/10.1130/G31034.1

Two large meteorite impacts at the Cretaceous-Paleogene boundary. / Jolley, David; Gilmour, Iain; Gurov, Eugene; Kelley, Simon; Watson, Jonathan.

In: Geology, Vol. 38, No. 9, 09.2010, p. 835-838.

Research output: Contribution to journalArticle

Jolley, D, Gilmour, I, Gurov, E, Kelley, S & Watson, J 2010, 'Two large meteorite impacts at the Cretaceous-Paleogene boundary', Geology, vol. 38, no. 9, pp. 835-838. https://doi.org/10.1130/G31034.1
Jolley, David ; Gilmour, Iain ; Gurov, Eugene ; Kelley, Simon ; Watson, Jonathan. / Two large meteorite impacts at the Cretaceous-Paleogene boundary. In: Geology. 2010 ; Vol. 38, No. 9. pp. 835-838.
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