دورية أكاديمية
A seismically induced onshore surge deposit at the KPg boundary, North Dakota.
| العنوان: | A seismically induced onshore surge deposit at the KPg boundary, North Dakota. |
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| المؤلفون: | DePalma RA; Department of Geology, University of Kansas, Lawrence, KS 66045; rdepalma@pbmnh.org dinosaur@ku.edu.; Department of Vertebrate Paleontology, The Palm Beach Museum of Natural History, Fort Lauderdale, FL 33306.; Department of Geosciences, Florida Atlantic University, Boca Raton, FL 33431., Smit J; Department of Geology and Geochemistry, Faculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands., Burnham DA; Department of Geology, University of Kansas, Lawrence, KS 66045; rdepalma@pbmnh.org dinosaur@ku.edu.; Biodiversity Institute, University of Kansas, Lawrence, KS 66045., Kuiper K; Department of Geology and Geochemistry, Faculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands., Manning PL; School of Earth & Environmental Sciences, University of Manchester, Manchester M13 9PL, United Kingdom., Oleinik A; Department of Geosciences, Florida Atlantic University, Boca Raton, FL 33431., Larson P; Black Hills Institute of Geological Research, Hill City, SD 57745., Maurrasse FJ; Department of Earth and Environment, Florida International University, Miami, FL 33199., Vellekoop J; Department of Earth and Environmental Sciences, Catholic University of Leuven, 3001 Leuven, Belgium.; Analytical, Environmental, and Geo- Chemistry, Vrije Universiteit Brussel, B-1050 Brussels, Belgium., Richards MA; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720.; Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195., Gurche L; Department of Vertebrate Paleontology, The Palm Beach Museum of Natural History, Fort Lauderdale, FL 33306., Alvarez W; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720. |
| المصدر: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2019 Apr 23; Vol. 116 (17), pp. 8190-8199. Date of Electronic Publication: 2019 Apr 01. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : National Academy of Sciences |
| مستخلص: | The most immediate effects of the terminal-Cretaceous Chicxulub impact, essential to understanding the global-scale environmental and biotic collapses that mark the Cretaceous-Paleogene extinction, are poorly resolved despite extensive previous work. Here, we help to resolve this by describing a rapidly emplaced, high-energy onshore surge deposit from the terrestrial Hell Creek Formation in Montana. Associated ejecta and a cap of iridium-rich impactite reveal that its emplacement coincided with the Chicxulub event. Acipenseriform fish, densely packed in the deposit, contain ejecta spherules in their gills and were buried by an inland-directed surge that inundated a deeply incised river channel before accretion of the fine-grained impactite. Although this deposit displays all of the physical characteristics of a tsunami runup, the timing (<1 hour postimpact) is instead consistent with the arrival of strong seismic waves from the magnitude M Competing Interests: The authors declare no conflict of interest. (Copyright © 2019 the Author(s). Published by PNAS.) |
| التعليقات: | Comment in: Nature. 2019 Apr;568(7751):143. (PMID: 30971844) |
| References: | Geology. 1992 Feb;20:99-103. (PMID: 11537752) Science. 1984 May 25;224(4651):867-9. (PMID: 17743194) Science. 1991 Jun 21;252(5013):1690-3. (PMID: 17751972) Science. 1980 Jun 6;208(4448):1095-108. (PMID: 17783054) Science. 1995 Aug 18;269(5226):930-5. (PMID: 17807728) Science. 2008 Apr 25;320(5875):500-4. (PMID: 18436783) Science. 2013 Feb 8;339(6120):684-7. (PMID: 23393261) Sci Adv. 2018 Feb 07;4(2):eaao2994. (PMID: 29441360) |
| فهرسة مساهمة: | Keywords: Chicxulub; Hell Creek Formation; KPg extinction; impact; tsunami |
| تواريخ الأحداث: | Date Created: 20190403 Date Completed: 20200313 Latest Revision: 20200313 |
| رمز التحديث: | 20240628 |
| مُعرف محوري في PubMed: | PMC6486721 |
| DOI: | 10.1073/pnas.1817407116 |
| PMID: | 30936306 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1091-6490 |
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| DOI: | 10.1073/pnas.1817407116 |