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

Science
Blair SchoeneSyed F R Khadri

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. 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. These findings support extinction models that incorporate both catastrophic events as drivers of environmental deterioration associated with the K-Pg extinction and its aftermath.

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Citations

Jul 10, 2019·Proceedings of the National Academy of Sciences of the United States of America·Daniel H Rothman
Jan 18, 2020·Science·Pincelli M HullJames C Zachos
Jul 1, 2020·Proceedings of the National Academy of Sciences of the United States of America·Alfio Alessandro ChiarenzaPeter A Allison
Feb 23, 2019·Science·Seth Burgess
May 29, 2020·Nature·David W KrauseLydia J Rahantarisoa
Jun 25, 2020·Science Advances·Scott A MacLennanBlair Schoene
Oct 23, 2019·Proceedings of the National Academy of Sciences of the United States of America·Michael J HenehanPincelli M Hull
Mar 31, 2021·Proceedings of the National Academy of Sciences of the United States of America·Andres Hernandez NavaLoÿc Vanderkluysen
Jun 18, 2021·Science Advances·Allen J SchaenJohn M Cottle
Jul 20, 2021·Journal of Analytical Atomic Spectrometry·Urs SchalteggerCyril Chelle-Michou
Jul 14, 2021·Proceedings of the National Academy of Sciences of the United States of America·N Truong, J I Lunine
Aug 4, 2021·Biology Letters·Kazunori YamahiraJun Kitano
Jul 7, 2021·Nature Communications·Ryan MathurFrancisca E Oboh-Ikuenobe

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