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A hydrothermal origin for isotopically anomalous cap dolostone cements from south China

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  • Thomas F. Bristow

    (California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
    Present address: NASA Ames Research Center, Moffett Field, California 94035, USA.)

  • Magali Bonifacie

    (California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
    Équipe de Géochimie des Isotopes Stables, Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot)

  • Arkadiusz Derkowski

    (Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland)

  • John M. Eiler

    (California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA)

  • John P. Grotzinger

    (California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA)

Abstract

No way out for snowball Earth Earth's emergence from perhaps its most severe ice age, the Marinoan 'snowball' glaciation around 635 million years ago, is thought to be linked with a massive release of trapped methane — largely based on evidence of a characteristic isotopic signature in calcite deposits in rock layers formed at the time. Bristow et al. propose that, instead, these calcites were formed by hydrothermal fluids at least 1.6 million years after the deposition of the surrounding strata, and that their signature derives from the thermogenic oxidation of hydrothermal methane from elsewhere. This withdraws a key line of evidence underpinning our understanding of how temperate conditions resumed following this extreme glaciation.

Suggested Citation

  • Thomas F. Bristow & Magali Bonifacie & Arkadiusz Derkowski & John M. Eiler & John P. Grotzinger, 2011. "A hydrothermal origin for isotopically anomalous cap dolostone cements from south China," Nature, Nature, vol. 474(7349), pages 68-71, June.
    • Handle: RePEc:nat:nature:v:474:y:2011:i:7349:d:10.1038_nature10096
    DOI: 10.1038/nature10096
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    Cited by:

    1. Tan, Lin & Liu, Fang & Dai, Sheng & Yao, Junlan, 2024. "A bibliometric analysis of two-decade research efforts in turning natural gas hydrates into energy," Energy, Elsevier, vol. 299(C).

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