Planavsky, NJ, Fakhraee, M, Bolton, EW et al. (4 more authors) (2022) On Carbon Burial and Net Primary Production Through Earth’s History. American Journal of Science, 322 (3). pp. 413-460. ISSN 0002-9599
Abstract
The carbonate carbon isotope record has been traditionally interpreted as evidence of stability in the globally integrated ratio of organic to total carbon burial from Earth's surface environments over the past ∼3.8 billion years, but recent work has begun to question this conclusion. Herein, we use a reactive-transport modeling approach to track organic carbon oxidation at varying atmospheric oxygen levels and use that information to provide a rough estimate of net primary production through time. Our results support the emerging view that there was extensive variability in the fraction of carbon buried as organic matter (fb,org) throughout Earth's history. We strengthen the case that the carbonate carbon isotope record has been characterized by a relatively constant baseline value over time due to a fundamental mechanistic link between atmospheric O2 levels and the carbon isotope composition of net inputs to the ocean-atmosphere system. Further, using estimates of the organic carbon burial flux (Fb,org) and the burial efficiency of the carbon pump from our marine reactive-transport modeling, we also support previous work suggesting extensive fluctuation in marine net primary production over time.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 American Journal of Science. This is an author produced version of an article published in American Journal of Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Carbon burial; marine NPP; reactive transport modeling; atmospheric oxygen level |
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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Jan 2022 13:33 |
Last Modified: | 12 Jul 2022 07:15 |
Status: | Published |
Publisher: | American Journal of Science |
Identification Number: | 10.2475/03.2022.01 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:182903 |