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Astronomical pacing of methane release in the Early Jurassic period

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Listed:
  • David B. Kemp

    (The Open University)

  • Angela L. Coe

    (The Open University)

  • Anthony S. Cohen

    (The Open University)

  • Lorenz Schwark

    (Universität zu Köln)

Abstract

Methane hydrate: triple blow Mudrocks now exposed at Port Mulgrave and Hawkser Bottoms on the North Yorkshire coast in the United Kingdom record conditions that prevailed during a time of rapid global climate change, 180 million years ago in the Early Jurassic period. It is thought that extensive volcanism and changes in solar radiation triggered massive release of methane gas and catastrophic global warming. The carbon isotope data from the Yorkshire mudrocks reveal three rapid pulses of methane hydrate dissociation driven by astronomical changes: two coincide with the extinction of marine species. This shows how natural processes can cause abrupt environmental change in the presence of a sensitive climatic threshold — in this case sea-floor methane hydrates poised to dissociate.

Suggested Citation

  • David B. Kemp & Angela L. Coe & Anthony S. Cohen & Lorenz Schwark, 2005. "Astronomical pacing of methane release in the Early Jurassic period," Nature, Nature, vol. 437(7057), pages 396-399, September.
    • Handle: RePEc:nat:nature:v:437:y:2005:i:7057:d:10.1038_nature04037
    DOI: 10.1038/nature04037
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    Cited by:

    1. Thea H. Heimdal & Yves Goddéris & Morgan T. Jones & Henrik H. Svensen, 2021. "Assessing the importance of thermogenic degassing from the Karoo Large Igneous Province (LIP) in driving Toarcian carbon cycle perturbations," Nature Communications, Nature, vol. 12(1), pages 1-7, December.

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