skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on February 22, 2020

Title: U-Pb constraints on pulsed eruption of the Deccan Traps across the end-Cretaceous mass extinction

Abstract

Temporal correlation between some continental flood basalt eruptions and mass extinctions has been proposed to indicate causality, with eruptive volatile release driving environmental degradation and extinction. In this work, we tested this model for the Deccan Traps flood basalt province, which, along with the Chicxulub bolide impact, is implicated in the Cretaceous-Paleogene (K-Pg) extinction approximately 66 million years ago. We estimated Deccan eruption rates with uranium-lead (U-Pb) zircon geochronology and resolved four high-volume eruptive periods. According to this model, maximum eruption rates occurred before and after the K-Pg extinction, with one such pulse initiating tens of thousands of years prior to both the bolide impact and extinction. Finally, these findings support extinction models that incorporate both catastrophic events as drivers of environmental deterioration associated with the K-Pg extinction and its aftermath.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [1]; ORCiD logo [4];  [5]
  1. Princeton Univ., NJ (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Berkeley Geochronology Center, Berkeley, CA (United States)
  4. Université de Lausanne, GEOPOLIS (Switzerland)
  5. Amravati University (India)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1497969
Report Number(s):
LLNL-JRNL-755419
Journal ID: ISSN 0036-8075; 942423
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Science
Additional Journal Information:
Journal Volume: 363; Journal Issue: 6429; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Schoene, Blair, Eddy, Michael P., Samperton, Kyle M., Keller, C. Brenhin, Keller, Gerta, Adatte, Thierry, and Khadri, Syed F. R.. U-Pb constraints on pulsed eruption of the Deccan Traps across the end-Cretaceous mass extinction. United States: N. p., 2019. Web. doi:10.1126/science.aau2422.
Schoene, Blair, Eddy, Michael P., Samperton, Kyle M., Keller, C. Brenhin, Keller, Gerta, Adatte, Thierry, & Khadri, Syed F. R.. U-Pb constraints on pulsed eruption of the Deccan Traps across the end-Cretaceous mass extinction. United States. doi:10.1126/science.aau2422.
Schoene, Blair, Eddy, Michael P., Samperton, Kyle M., Keller, C. Brenhin, Keller, Gerta, Adatte, Thierry, and Khadri, Syed F. R.. Fri . "U-Pb constraints on pulsed eruption of the Deccan Traps across the end-Cretaceous mass extinction". United States. doi:10.1126/science.aau2422.
@article{osti_1497969,
title = {U-Pb constraints on pulsed eruption of the Deccan Traps across the end-Cretaceous mass extinction},
author = {Schoene, Blair and Eddy, Michael P. and Samperton, Kyle M. and Keller, C. Brenhin and Keller, Gerta and Adatte, Thierry and Khadri, Syed F. R.},
abstractNote = {Temporal correlation between some continental flood basalt eruptions and mass extinctions has been proposed to indicate causality, with eruptive volatile release driving environmental degradation and extinction. In this work, we tested this model for the Deccan Traps flood basalt province, which, along with the Chicxulub bolide impact, is implicated in the Cretaceous-Paleogene (K-Pg) extinction approximately 66 million years ago. We estimated Deccan eruption rates with uranium-lead (U-Pb) zircon geochronology and resolved four high-volume eruptive periods. According to this model, maximum eruption rates occurred before and after the K-Pg extinction, with one such pulse initiating tens of thousands of years prior to both the bolide impact and extinction. Finally, these findings support extinction models that incorporate both catastrophic events as drivers of environmental deterioration associated with the K-Pg extinction and its aftermath.},
doi = {10.1126/science.aau2422},
journal = {Science},
number = 6429,
volume = 363,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on February 22, 2020
Publisher's Version of Record

Save / Share: