Cited by 260Paleontology and Stratigraphy of FossilsOrigins and Evolution of LifeGeological and Geochemical Analysis

Isotopic Evidence for an Aerobic Nitrogen Cycle in the Latest Archean

Garvin, Jessica, Buick, Roger, Anbar, Ariel D., Arnold, Gail L., Kaufman, Alan J.·2009·Science

Abstract

The nitrogen cycle provides essential nutrients to the biosphere, but its antiquity in modern form is unclear. In a drill core though homogeneous organic-rich shale in the 2.5-billion-year-old Mount McRae Shale, Australia, nitrogen isotope values vary from +1.0 to +7.5 per mil (per thousand) and back to +2.5 per thousand over approximately 30 meters. These changes evidently record a transient departure from a largely anaerobic to an aerobic nitrogen cycle complete with nitrification and denitrification. Complementary molybdenum abundance and sulfur isotopic values suggest that nitrification occurred in response to a small increase in surface-ocean oxygenation. These data imply that nitrifying and denitrifying microbes had already evolved by the late Archean and were present before oxygen first began to accumulate in the atmosphere.

Integrity signals

Registry

Crossref · 10.1126/science.1165675

Cites

23 of 23 references verified0 citation errors · 0 not checkable

Statistics

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

Claims the paper makes

This paper’s full text isn’t openly available, 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?

  • The whiff is recorded by spikes in Mo and Re concentrations, elevated nitrogen isotope values, and iron speciation data.

    “The whiff is recorded by spikes in Mo and Re concentrations, elevated nitrogen isotope values, and iron speciation data (Anbar et al., 2007; Reinhard et al., 2009; Garvin et al., 2009);”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Garvin, J., Buick, R., Anbar, A. D., Arnold, G. L., & Kaufman, A. J.
Affiliations
University of Washington (US)
Corresponding author
Buick, Roger
Venue
Science
Published
2009-02-20
Volume
323
Issue
5917
Pages
1045-1048
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2000496027
Cited by
260
References
23
Citations by year
2026: 6 · 2025: 21 · 2024: 14 · 2023: 11 · 2022: 18 · 2021: 18 · 2020: 13 · 2019: 14 · 2018: 20 · 2017: 17 · 2016: 8 · 2015: 11 · 2014: 12 · 2013: 23 · 2012: 18
FWCI
13.73
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
Keywords
nitrogen cycling, Archean, nitrogen isotopes, nitrification, denitrification, molybdenum, sulfur isotopes, ocean oxygenation, organic-rich shale, rock core
MeSH terms
Aerobiosis, Quaternary Ammonium Compounds, Anaerobiosis, Archaea, Australia, Bacteria, Biological Evolution, Nitrates, Nitrites, Nitrogen, Nitrogen Fixation, Nitrogen Isotopes, Oceans and Seas, Oxidation-Reduction, Oxygen, Time, Geologic Sediments

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