Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

Evidence for volcanism and weathering during the Permian-Triassic mass extinction from Meishan (South China) osmium isotope record.

Liu, Zeyang and Selby, David and Zhang, Hua and Shen, Shuzhong (2020) 'Evidence for volcanism and weathering during the Permian-Triassic mass extinction from Meishan (South China) osmium isotope record.', Palaeogeography, palaeoclimatology, palaeoecology., 553 . p. 109790.

Abstract

The Permian–Triassic mass extinction event is the most severe biotic crisis during the Phanerozoic. The trigger of this event has been widely linked with massive volcanic activity associated with the Siberian Traps Large Igneous Province. However, the direct link is still lacking to fully understand the event. In this study, we apply osmium isotope (187Os/188Os, or Osi) stratigraphy across the Permian–Triassic boundary interval in the Meishan section of South China. The Os isotope stratigraphy reveals multiple shifts to more unradiogenic 187Os/188Os composition that are interpreted to reflect pulses of volcanism across the mass extinction interval. Additionally, a shift to a more radiogenic 187Os/188Os composition is also found immediately above the mass extinction interval, which is taken to reflect the enhanced weathering of the continental crust in response to greenhouse gas release into the atmosphere and the associated hyperthermal.

Item Type:Article
Full text:Publisher-imposed embargo until 11 May 2021.
(AM) Accepted Manuscript
Available under License - Creative Commons Attribution Non-commercial No Derivatives.
File format - PDF
(872Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1016/j.palaeo.2020.109790
Publisher statement:© 2020 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Date accepted:03 May 2020
Date deposited:12 May 2020
Date of first online publication:11 May 2020
Date first made open access:11 May 2021

Save or Share this output

Export:
Export
Look up in GoogleScholar