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State shift in Deccan volcanism at the Cretaceous-Paleogene boundary, possibly induced by impact
Journal article   Open access   Peer reviewed

State shift in Deccan volcanism at the Cretaceous-Paleogene boundary, possibly induced by impact

Paul R. Renne, Courtney J. Sprain, Mark A. Richards, Stephen Self, Loc Vanderkluysen and Kanchan Pande
Science (American Association for the Advancement of Science), v 350(6256)
02 Oct 2015
PMID: 26430116
url
https://escholarship.org/uc/item/5fk799n8View

Abstract

Multidisciplinary Sciences Science & Technology Science & Technology - Other Topics ESI Highly Cited Paper (Incites)
Bolide impact and flood volcanism compete as leading candidates for the cause of terminal-Cretaceous mass extinctions. High-precision Ar-40/Ar-39 data indicate that these two mechanisms may be genetically related, and neither can be considered in isolation. The existing Deccan Traps magmatic system underwent a state shift approximately coincident with the Chicxulub impact and the terminal-Cretaceous mass extinctions, after which similar to 70% of the Traps' total volume was extruded in more massive and more episodic eruptions. Initiation of this new regime occurred within similar to 50,000 years of the impact, which is consistent with transient effects of impact-induced seismic energy. Postextinction recovery of marine ecosystems was probably suppressed until after the accelerated volcanism waned.

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Web of Science research areas
Geochemistry & Geophysics
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