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Low marine sulphate and protracted oxygenation of the Proterozoic biosphere

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  • Linda C. Kah

    (University of Tennessee)

  • Timothy W. Lyons

    (University of Missouri)

  • Tracy D. Frank

    (University of Nebraska)

Abstract

Progressive oxygenation of the Earth's early biosphere is thought to have resulted in increased sulphide oxidation during continental weathering, leading to a corresponding increase in marine sulphate concentration1. Accurate reconstruction of marine sulphate reservoir size is therefore important for interpreting the oxygenation history of early Earth environments. Few data, however, specifically constrain how sulphate concentrations may have changed during the Proterozoic era (2.5–0.54 Gyr ago). Prior to 2.2 Gyr ago, when oxygen began to accumulate in the Earth's atmosphere2,3, sulphate concentrations are inferred to have been

Suggested Citation

  • Linda C. Kah & Timothy W. Lyons & Tracy D. Frank, 2004. "Low marine sulphate and protracted oxygenation of the Proterozoic biosphere," Nature, Nature, vol. 431(7010), pages 834-838, October.
  • Handle: RePEc:nat:nature:v:431:y:2004:i:7010:d:10.1038_nature02974
    DOI: 10.1038/nature02974
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    Cited by:

    1. Guoxiong Chen & Qiuming Cheng & Timothy W. Lyons & Jun Shen & Frits Agterberg & Ning Huang & Molei Zhao, 2022. "Reconstructing Earth’s atmospheric oxygenation history using machine learning," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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