Cited by 86Paleontology and Stratigraphy of FossilsAstro and Planetary ScienceOrigins and Evolution of Life

Biological regulation of atmospheric chemistry en route to planetary oxygenation

Open access
Izon, Gareth, Zerkle, Aubrey L., Williford, Kenneth H., Farquhar, James, Poulton, Simon W., Claire, Mark W.·2017·Proceedings of the National Academy of Sciences

Abstract

Significance: It has been proposed that enhanced methane fluxes to Earth’s early atmosphere could have altered atmospheric chemistry, initiating a hydrocarbon-rich haze reminiscent of Saturn’s moon Titan. The occurrence, cause, and significance of haze development, however, remain unknown. Here, we test and refine the “haze hypothesis” by combining an ultra-high-resolution sulfur- and carbon-isotope dataset with photochemical simulations to reveal the structure and timing of haze development. These data suggest that haze persisted for ∼1 million years, requiring a sustained biological driver. We propose that enhanced atmospheric CH 4 , implied by the presence of haze, could have had a significant impact on the escape of hydrogen from the atmosphere, effectively contributing to the terminal oxidation of Earth’s surficial environments ∼2.4 billion years ago.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.1618798114

Cites

82 of 82 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • The structure of S-MIF variations in Archean sedimentary minerals and their correlation with light, organic δ13C have been attributed to episodic hazes driven by variable atmospheric CH4:CO2 ratios.

    “Consequently, the structure of S-MIF variations in Archean sedimentary minerals and their correlation with light, organic δ13C have been attributed to episodic hazes driven by variable atmospheric CH4:CO2 ratios (60, 193–196).”

    From The Archean atmosphere (2020) · cites this paper as [194]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Paris G, Adkins JF, Sessions AL, Webb SM, & Fischer WW (2014) Neoarchean carbonate- associated sulfate records positive Δ33S anomalies. Science 346(6210):739-741.
  2. Pavlov AA, Kasting JF, Eigenbrode JL, & Freeman KH (2001) Organic haze in Earth's early atmosphere: Source of low-13 C Late Archean kerogens? Geology 29(11):1003-1006.

Cited by

Sorted by citations

Authors
Izon, G., Zerkle, A. L., Williford, K. H., Farquhar, J., Poulton, S. W., & Claire, M. W.
Affiliations
  • University of St Andrews (GB)
  • California Institute of Technology (US)
  • Earth System Science Interdisciplinary Center (US)
  • University of Leeds (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2017-03-13
Volume
114
Issue
13
Pages
E2571-E2579
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2596373998
Cited by
86
References
82
Citations by year
2026: 1 · 2025: 6 · 2024: 6 · 2023: 3 · 2022: 6 · 2021: 10 · 2020: 14 · 2019: 15 · 2018: 17 · 2017: 7
FWCI
10.29
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)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
  • St Andrews Research Repository (St Andrews Research Repository) (submittedVersion)
Funders
  • Natural Environment Research Council (NE/J023485, NE/H016805)
  • National Aeronautics and Space Administration (N/A)
  • The Scottish Alliance for Geoscience, the Environment and Society (N/A)
  • Geological Society of London (n/A)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
Keywords
early Earth atmosphere, methane, atmospheric chemistry, sulfur isotopes, carbon isotopes, hydrogen escape, atmospheric oxygenation, biomethane production
MeSH terms
Atmosphere, Models, Theoretical, Oxygen, Time Factors, Earth, Planet

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