T217 Permian-Triassic Biotic Crisis: New Insights through Integrative Studies of Earth, Ocean, and Atmosphere

Tuesday, 6 November 2018
1:30 PM - 5:30 PM
Sagamore Ballroom 7

PROLONGED LATE PERMIAN-EARLY TRIASSIC HYPERTHERMAL: FAILURE OF CLIMATE REGULATION?

Paper number: T217-2
Program: Technical Sessions
Time: 1:50 PM – 2:10 PM

Authors

  • Lee Kump Presenting Author
    Penn State Univ - Univ ParkDept Geosciences, University Park, PA

Abstract

The extreme warmth associated with the mass extinction at the Permian-Triassic boundary was likely produced by a rapid buildup of carbon dioxide in the atmosphere from the eruption and emplacement of the Siberian Traps. In comparison to another hyperthermal event, the Paleocene Eocene Thermal Maximum, the Permian-Triassic event, while leaving a similar carbon isotope record, likely had larger amounts of CO2 emitted and did not follow the expected timescale of climate recovery. The quantities and rates of CO2 emission likely exhausted the capacity of the long-term climate regulator associated with silicate weathering. Failure was enhanced by slow rock uplift and high continentality associated with the supercontinental phase of global tectonics at the time of the Siberian Traps eruption.

Geological Society of America Abstracts with Programs. Vol. 50, No. 6

doi: 10.1130/abs/2018AM-316474

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