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Generation of hydrothermal megaplumes by cooling of pillow basalts at mid-ocean ridges

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  • M. R. Palmer

    (University of Bristol)

  • G. G. J. Ernst

    (University of Bristol)

Abstract

Hydrothermal megaplumes are huge volumes of anomalously warm water that are located up to 1,000 metres above the sea floor and appear to be generated at mid-ocean ridges. Since their discovery in 1986, there has been considerable debate concerning their origin. A theoretical model is used to argue that the cooling of pillow basalts, which are erupted at ∼1,200 °C into sea water and are the most common form of submarine volcanic activity, is responsible for the megaplume formation.

Suggested Citation

  • M. R. Palmer & G. G. J. Ernst, 1998. "Generation of hydrothermal megaplumes by cooling of pillow basalts at mid-ocean ridges," Nature, Nature, vol. 393(6686), pages 643-647, June.
    • Handle: RePEc:nat:nature:v:393:y:1998:i:6686:d:10.1038_31397
    DOI: 10.1038/31397
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