Cited by 129Paleontology and Stratigraphy of FossilsEarth Systems and Cosmic EvolutionGeological and Geochemical Analysis

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Constraints on Paleoproterozoic atmospheric oxygen levels

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Bellefroid, Eric J., Hood, Ashleigh v. S., Hoffman, Paul F., Thomas, Matthew D., Reinhard, Christopher T., Planavsky, Noah J.·2018·Proceedings of the National Academy of Sciences

DOI 10.1073/pnas.1806216115PMC PMC6094116

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Abstract

Significance: Earth’s protracted oxygenation significantly transformed global biological and geochemical cycles. In particular, the rise of atmospheric oxygen above trace levels was an essential prerequisite for the development of animals. However, quantifying atmospheric oxygen levels in Earth’s middle age remains a daunting challenge. Here we use a combination of sedimentology, geochemical constraints, and oceanographic modeling to provide a quantitative estimate of Precambrian atmospheric oxygen. We provide evidence that atmospheric oxygen levels decreased significantly after the “Great Oxygenation Event” in Earth’s early history, to levels that would have negatively impacted the ecology of the earliest complex organisms.

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Authors: Bellefroid, E. J., Hood, A. V. S., Hoffman, P. F., Thomas, M. D., Reinhard, C. T., & Planavsky, N. J.
Affiliations: Yale University (US)
University of Victoria (CA)
University of California, Riverside (US)
ORCID: Bellefroid, Eric J.
Hood, Ashleigh v. S.
Hoffman, Paul F.
Thomas, Matthew D.
Reinhard, Christopher T.
Planavsky, Noah J.
Venue: Proceedings of the National Academy of Sciences
Publisher: National Academy of Sciences
Published: 2018-07-23
Volume: 115
Issue: 32
Pages: 8104-8109
ISSN: 0027-8424 (ISSN-L)
1091-6490
DOI: 10.1073/pnas.1806216115
PMC: PMC6094116
OpenAlex: W2884809501
Cited by: 129
References: 72
Citations by year: 2026: 9 · 2025: 17 · 2024: 18 · 2023: 9 · 2022: 27 · 2021: 19 · 2020: 17 · 2019: 9 · 2018: 3
FWCI: 8.83
Type: journal article
Language: en
Open access: green
europepmc.org
Licence: www.pnas.org/site/aboutpnas/licenses.xhtml (vor, 184 d)
Locations: Proceedings of the National Academy of Sciences (publishedVersion)
Europe PMC (PubMed Central) (publishedVersion)
PubMed Central (publishedVersion)
PubMed (publishedVersion)
Funders: Natural Sciences and Engineering Research Council of Canada
Topics: Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
Physical Sciences › Environmental Science › Global and Planetary Change › Earth Systems and Cosmic Evolution
Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geological and Geochemical Analysis
Keywords: Paleoproterozoic, atmospheric oxygen, Great Oxidation Event, oxygenation of Earth, Precambrian atmosphere, early animal evolution, ocean redox conditions, Precambrian geochemistry, ocean modeling

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Constraints on Paleoproterozoic atmospheric oxygen levels

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