No evidence for high atmospheric oxygen levels 1,400 million years ago
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Planavsky-2016-No evidence for high.pdf
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Author(s)
Planavsky, Noah J.
Cole, Devon B.
Reinhard, Christopher T.
Diamond, Charles
Love, Gordon D.
Luo, Genming
Zhang, Shuang
Konhauser, Kurt O.
Lyons, Timothy W.
Date Issued
April 2016
Journal
Proceedings of the National Academy of Sciences of the United States of America
Publisher
National Academy of Sciences (U.S.)
Citation
Planavsky, Noah J., Devon B. Cole, Christopher T. Reinhard, Charles Diamond, Gordon D. Love, Genming Luo, Shuang Zhang, Kurt O. Konhauser, and Timothy W. Lyons. “No Evidence for High Atmospheric Oxygen Levels 1,400 Million Years Ago.” Proceedings of the National Academy of Sciences 113, no. 19 (April 20, 2016): E2550–E2551.
Version
Final published version
Abstract
Zhang et al. (1) recently proposed atmospheric oxygen levels of ∼4% present atmospheric levels (PAL) based on modeling a paleoenvironment reconstructed from trace metal and biomarker data from the 1,400 Ma Xiamaling Formation in China. Intriguingly, this pO2 level is above the threshold oxygen requirements of basal animals and clashes with evidence for atmospheric oxygen levels <<1% PAL in the mid-Proterozoic (2). However, there are fundamental problems with the inorganic and organic geochemical work presented by Zhang et al. (1).
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1073/pnas.1601925113
