Capriolo, M, Mills, BJW, Newton, RJ orcid.org/0000-0003-0144-6867 et al. (4 more authors) (2022) Anthropogenic-scale CO2 degassing from the Central Atlantic Magmatic Province as a driver of the end-Triassic mass extinction. Global and Planetary Change, 209. 103731. ISSN 0921-8181
Abstract
The climatic and environmental impact of exclusively volcanic CO2 emissions is assessed during the main effusive phase of the Central Atlantic Magmatic Province (CAMP), which is synchronous with the end-Triassic mass extinction. CAMP volcanism occurred in brief and intense eruptive pulses each producing extensive basaltic lava flows. Here, CAMP volcanic CO2 injections into the surface system are modelled using a biogeochemical box model for the carbon cycle. Our modelling shows that, even if positive feedback phenomena may be invoked to explain the carbon isotope excursions preserved in end-Triassic sedimentary records, intense and pulsed volcanic activity alone may have caused repeated temperature increases and pH drops, up to 5 °C and about 0.2 log units respectively. Hence, rapid and massive volcanic CO2 emissions from CAMP, on a similar scale to current anthropogenic emissions, severely impacted on climate and environment at a global scale, leading to catastrophic biotic consequences.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | CO2; Global warming; Ocean acidification; Mass extinction; Large Igneous Provinces; End-Triassic; Biogeochemical modelling |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Earth Surface Science Institute (ESSI) (Leeds) |
Funding Information: | Funder Grant number NERC (Natural Environment Research Council) NE/N018559/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Jan 2022 15:44 |
Last Modified: | 13 Jan 2022 15:44 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.gloplacha.2021.103731 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:182008 |