Cited by 653Paleontology and Stratigraphy of FossilsGeological and Geochemical AnalysisGeochemistry and Elemental Analysis

Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes

Open access
Frei, Robert, Gaucher, Claudio, Poulton, Simon W., Canfield, Don E.·2009·Nature

Abstract

Geochemical data suggest that oxygenation of the Earth's atmosphere occurred in two broad steps. The first rise in atmospheric oxygen is thought to have occurred between approximately 2.45 and 2.2 Gyr ago, leading to a significant increase in atmospheric oxygen concentrations and concomitant oxygenation of the shallow surface ocean. The second increase in atmospheric oxygen appears to have taken place in distinct stages during the late Neoproterozoic era ( approximately 800-542 Myr ago), ultimately leading to oxygenation of the deep ocean approximately 580 Myr ago, but details of the evolution of atmospheric oxygenation remain uncertain. Here we use chromium (Cr) stable isotopes from banded iron formations (BIFs) to track the presence of Cr(VI) in Precambrian oceans, providing a time-resolved picture of the oxygenation history of the Earth's atmosphere-hydrosphere system. The geochemical behaviour of Cr is highly sensitive to the redox state of the surface environment because oxidative weathering processes produce the oxidized hexavalent [Cr(VI)] form. Oxidation of reduced trivalent [Cr(III)] chromium on land is accompanied by an isotopic fractionation, leading to enrichment of the mobile hexavalent form in the heavier isotope. Our fractionated Cr isotope data indicate the accumulation of Cr(VI) in ocean surface waters approximately 2.8 to 2.6 Gyr ago and a likely transient elevation in atmospheric and surface ocean oxygenation before the first great rise of oxygen 2.45-2.2 Gyr ago (the Great Oxidation Event). In approximately 1.88-Gyr-old BIFs we find that Cr isotopes are not fractionated, indicating a decline in atmospheric oxygen. Our findings suggest that the Great Oxidation Event did not lead to a unidirectional stepwise increase in atmospheric oxygen. In the late Neoproterozoic, we observe strong positive fractionations in Cr isotopes (delta(53)Cr up to +4.9 per thousand), providing independent support for increased surface oxygenation at that time, which may have stimulated rapid evolution of macroscopic multicellular life.

Integrity signals

Registry

Crossref · 10.1038/nature08266

Cites

37 of 37 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Isotopes of Cu, Cr, Fe, U, Mo, and Se indicate an anoxic Archean atmosphere.

    “Using similar arguments of O2-sensitive weathering, transport, and fractionation, isotopes of Cu (76), Cr (77), Fe (78), U (79), Mo [e.g., (80, 81)], and Se (82) indicates an anoxic Archean atmosphere.”

    From The Archean atmosphere (2020) · cites this paper as [77]

  • Those authors argued that increases in δ53Cr of +0.04 to +0.29‰ in iron formations at 2.7 and again at 1.8 Ga are the direct result of Cr(III) oxidation to Cr(VI), and that this oxidation must have been catalyzed by oxidized Mn2+ as MnO2.

    “Those authors argued that increases in δ 53 Cr of +0.04 to +0.29‰ in IFs at 2.7, and again at 1.8 Ga, are the direct result of Cr(III) being oxidized to Cr(VI) and that oxidation of Cr must have been catalyzed by oxidized Mn 2+ in the form of MnO2.”
  • Muted δ53Cr variations (-0.3 to +0.3‰) at this time were taken as indicative of Cr cycling in reduced form, in contrast with highly variable values coincident with ocean oxygenation in the Neoproterozoic (up to +4.9‰).

    “Muted δ 53 Cr variations (-0.3 to +0.3‰) at this time were taken as being indicative of Cr cycling in reduced form (Konhauser et al., 2011), in contrast with highly variable values coincident with ocean oxygenation in the Neoproterozoic (up to +4.9‰; Frei et al., 2009).”
  • Small variations in Cr isotope composition in 2.8-2.6 Ga iron formations were first suggested to document brief pulses in atmospheric oxygen, which mobilized Cr via oxidative weathering and led to Cr sequestration in iron formations prior to the Great Oxidation Event.

    “For instance, small variations in Cr isotope composition in 2.8-2.6 Ga IF were first suggested to document brief pulses in atmospheric oxygen, which mobilized Cr via oxidative weathering and led to Cr sequestration in IF prior to the GOE”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Frei, R., Gaucher, C., Poulton, S. W., & Canfield, D. E.
Affiliations
  • University of Copenhagen (DK)
  • Newcastle University (GB)
Corresponding author
Frei, Robert
Venue
Nature
Published
2009-09
Volume
461
Issue
7261
Pages
250-253
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2060563278
Cited by
653
References
37
Citations by year
2026: 17 · 2025: 20 · 2024: 32 · 2023: 35 · 2022: 37 · 2021: 59 · 2020: 32 · 2019: 46 · 2018: 63 · 2017: 47 · 2016: 47 · 2015: 47 · 2014: 35 · 2013: 43 · 2012: 31
FWCI
23.70
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (submittedVersion)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
Danmarks Grundforskningsfond
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
Great Oxidation Event, chromium isotopes, banded iron formations, hexavalent chromium, oxidative weathering, Precambrian oceans, iron oxide, Precambrian
MeSH terms
Animals, Atmosphere, Chromium, Chromium Isotopes, Iron, Oceans and Seas, Oxidation-Reduction, Oxides, Oxygen, Seawater, Manganese Compounds, Biodiversity, History, Ancient

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review