Cited by 152Paleontology and Stratigraphy of FossilsGeochemistry and Elemental AnalysisGeological and Geochemical Analysis

A redox-stratified ocean 3.2 billion years ago

Satkoski, Aaron M., Beukes, Nicolas J., Li, Weiqiang, Beard, Brian L., Johnson, Clark M.·2015·Earth and Planetary Science Letters

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Crossref · 10.1016/j.epsl.2015.08.007

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54 of 54 references verified0 citation errors · 0 not checkable

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  • Satkoski et al. calculated shallow photic zone O2 contents at ~10 μM (between 10^-3 and 10^-2 POL) and deep-water O2 contents at ~0.4 μM.

    “Based on modelling of Fe isotopes in the Manzimnyama jasper, Satkoski et al. (2015) calculated shallow photic zone O2 contents at ~10 µM (between 10 -3 and 10 -2 POL, or Present Ocean Level; Fig. 10), and deep-water O2 contents at ~0.4 µM.”
  • Satkoski et al. used stable Fe and radiogenic U-Th-Pb isotope data from the 3.2 Ga Manzimnyama IF to demonstrate that proximal, shallow-water samples record precipitation under more oxic conditions compared to the distal, deeper-water facies, and that U enrichment in the shallow-water samples indicates the presence of free oxygen in the photic zone.

    “Satkoski et al. (2015) used a combination of stable Fe and radiogenic UTh-Pb isotope data from the 3.2 Ga Manzimnyama IF of the Fig Tree Group, South Africa to demonstrate that proximal, shallow-water samples record precipitation under more oxic conditions compared to the distal, deeper-water facies, and that the presence of U enrichment in the shallowwater samples indicates the”
  • Estimates of maximum O2 contents in shallow oceans potentially provide evidence that the shallow oceans had significant free O2 levels by 3.2 Ga, hundreds of millions of years prior to the rise in atmospheric O2.

    “potentially provide evidence that the shallow oceans had significant free O2 levels by 3.2 Ga, hundreds of millions of years prior to the rise in atmospheric O2.”

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Authors
Satkoski, A. M., Beukes, N. J., Li, W., Beard, B. L., & Johnson, C. M.
Affiliations
  • University of Wisconsin–Madison (US)
  • University of Johannesburg (ZA)
  • Nanjing University (CN)
Corresponding author
Satkoski, Aaron M.
Venue
Earth and Planetary Science Letters
Publisher
Elsevier BV
Published
2015-11
Volume
430
Pages
43-53
ISSN
0012-821X (ISSN-L)
OpenAlex
W1129004991
Cited by
152
References
54
Citations by year
2026: 6 · 2025: 11 · 2024: 10 · 2023: 14 · 2022: 19 · 2021: 15 · 2020: 11 · 2019: 19 · 2018: 15 · 2017: 17 · 2016: 14 · 2015: 1
FWCI
11.88
Type
journal article
Language
en
Update notices
erratum (2017-02-15)
Open access
closed
Locations
Earth and Planetary Science Letters (publishedVersion)
Funders
University of Johannesburg
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
Keywords
Great Oxidation Event, banded iron formations, Fig Tree Group, U-Th-Pb geochronology, iron isotopes, uranium, redox stratification

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