Cited by 96Paleontology and Stratigraphy of FossilsGeological and Geochemical AnalysisGeochemistry and Elemental Analysis

The rise of oxygen and siderite oxidation during the Lomagundi Event

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Bachan, Aviv, Kump, Lee R.·2015·Proceedings of the National Academy of Sciences

Abstract

Significance: The evolution of Earth’s oxygen-rich atmosphere occurred in two major steps, the first of which took place approximately 2.4 billion years ago. Following the initial rise of oxygen, carbon isotope evidence indicates the burial of vast quantities of organic carbon and the production of correspondingly large amounts of oxygen. However, if not accompanied by an additional supply of carbon, the extreme levels of organic carbon burial imply nonphysically low atmospheric p CO 2 levels. Here we propose that the initial rise in O 2 led to the oxidation of a large preexisting reservoir of siderite (FeCO 3 ), which provided the necessary carbon for the burial of organic matter, production of further O 2 , and substantial accumulation of oxygen in Earth’s atmosphere for the first time.

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Crossref · 10.1073/pnas.1422319112

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58 of 58 references verified0 citation errors · 0 not checkable

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  • The Lomagundi event (∼2.22-2.06 Ga) can be explained by redox exchanges with sedimentary sulfur and iron reservoirs, shifting electrons from sedimentary sulfide and siderite to reduced organic carbon and back again on the sedimentary recycling timescale.

    “This can be explained by redox exchanges with sedimentary sulfur and iron reservoirs, shifting electrons from sedimentary sulfide and siderite to reduced organic carbon (and back again) on the sedimentary recycling timescale660.”

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Authors
Bachan, A., & Kump, L. R.
Affiliations
Pennsylvania State University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2015-05-11
Volume
112
Issue
21
Pages
6562-6567
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1554646649
Cited by
96
References
58
Citations by year
2026: 4 · 2025: 5 · 2024: 14 · 2023: 4 · 2022: 15 · 2021: 9 · 2020: 9 · 2019: 14 · 2018: 6 · 2017: 9 · 2016: 5 · 2015: 1
FWCI
5.31
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
Keywords
sulfide oxidation, Paleoproterozoic, organic carbon burial, carbon isotope enrichment, oxidative weathering, early atmospheric oxygenation, carbonate weathering

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