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Young formation age of a mantle plume source

Nature volume 362, pages 715721 (22 April 1993) | Download Citation

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Abstract

The Ninetyeast Ridge hotspot track displays strontium, neodymium and lead isotope variations over time that reflect simple radioactive decay in the plume source rather than a change in the mantle components present. The lead isotope variations indicate that the time spent by the plume source in a non-convecting mantle boundary layer was only a few hundreds of millions of years, contrary to the conventional view of individual plume sources as old (1–3 Gyr) or persistent features.

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Affiliations

  1. Max-Planck-lnstitut für Chemie, Postfach 3060, W-6500 Mainz, Germany

    • Cornelia Class
    • , Steven L. Goldstein
    • , Stephen J. G. Galer
    •  & Dominique Weis
  2. Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, B-1050 Brussels, Belgium

    • Dominique Weis

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https://doi.org/10.1038/362715a0

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