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Through the End of the Cretaceous in the Type Locality of the Hell Creek Formation in Montana and Adjacent Areas
GSA Special Papers

Through the End of the Cretaceous in the Type Locality of the Hell Creek Formation in Montana and Adjacent Areas

Author(s)
Gregory P. Wilson
Gregory P. Wilson
Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Seattle, Washington 98195-1800, USA
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William A. Clemens
William A. Clemens
Museum of Paleontology, University of California, Berkeley, Berkeley, California 94720-4780, USA
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John R. Horner
John R. Horner
Museum of the Rockies, Montana State University, Bozeman, Montana 59717-0040, USA
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Joseph H. Hartman
Joseph H. Hartman
Harold Hamm School of Geology and Geological Engineering, University of North Dakota, Grand Forks, North Dakota 58202-8358, USA
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Geological Society of America
Volume
503
DOI:
https://doi.org/10.1130/SPE503
Copyright:
© 2014 Geological Society of America
Attribution:You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial ‒ you may not use this work for commercial purpose. No Derivative works ‒ You may not alter, transform, or build upon this work. Sharing ‒ Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.
ISBN print:
9780813725031
Publication date:
January 01, 2014
Book Chapter

A preliminary test of the press-pulse extinction hypothesis: Palynological indicators of vegetation change preceding the Cretaceous-Paleogene boundary, McCone County, Montana, USA

Author(s)
Nan Crystal Arens
Nan Crystal Arens
Department of Geoscience, Hobart & William Smith Colleges, Geneva, New York 14456, USA
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;
Anna Thompson
Anna Thompson
Department of Biology, Feather River College, Quincy, California 95971, USA
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;
A. Hope Jahren
A. Hope Jahren
Department of Geology and Geophysics, University of Hawaii, Honolulu, Hawaii 96822, USA
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Doi:
https://doi.org/10.1130/2014.2503(07)
  • Published:
    January 01, 2014

Many workers consider the Cretaceous-Paleogene extinction the archetypal catastrophic pulse event caused solely by the Chicxulub bolide impact. However, based on a global scale analysis of marine animals, the Cretaceous-Paleogene boundary is a candidate for an extinction enhanced by the coincidence of press and pulse disturbances. We make a preliminary test of key predictions of the press-pulse hypothesis using palynological data. We document a local palynological extinction of 21% at the Cretaceous-Paleogene boundary, which is consistent with extinction rates of 15% to 30% at other localities in the Hell Creek type area and throughout North America. We also find a...

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