Acid rain and ozone depletion from pulsed siberian traps magmatism

Benjamin A. Black, Jean François Lamarque, Christine A. Shields, Linda T. Elkins-Tanton, Jeffrey T. Kiehl

Research output: Contribution to journalArticle

75 Scopus citations

Abstract

The Siberian Traps fl ood basalts have been invoked as a trigger for the catastrophic end- Permian mass extinction. Widespread aberrant plant remains across the Permian-Triassic boundary provide evidence that atmospheric stress contributed to the collapse in terrestrial diversity. We used detailed estimates of magmatic degassing from the Siberian Traps to complete the fi rst three-dimensional global climate modeling of atmospheric chemistry during eruption of a large igneous province. Our results show that both strongly acidic rain and global ozone collapse are possible transient consequences of episodic pyroclastic volcanism and heating of volatile-rich Siberian country rocks. We suggest that in conjunction with abrupt warming from greenhouse gas emissions, these repeated, rapidly applied atmospheric stresses directly linked Siberian magmatism to end-Permian ecological failure on land. Our comprehensive modeling supplies the fi rst picture of the global distribution and severity of acid rain and ozone depletion, providing testable predictions for the geography of end-Permian environmental proxies.

Original languageEnglish (US)
Pages (from-to)67-70
Number of pages4
JournalGeology
Volume42
Issue number1
DOIs
StatePublished - Jan 1 2014

ASJC Scopus subject areas

  • Geology

Fingerprint Dive into the research topics of 'Acid rain and ozone depletion from pulsed siberian traps magmatism'. Together they form a unique fingerprint.

  • Cite this

    Black, B. A., Lamarque, J. F., Shields, C. A., Elkins-Tanton, L. T., & Kiehl, J. T. (2014). Acid rain and ozone depletion from pulsed siberian traps magmatism. Geology, 42(1), 67-70. https://doi.org/10.1130/G34875.1