A young source for the Hawaiian plume

Alexander V. Sobolev (), Albrecht W. Hofmann, Klaus Peter Jochum, Dmitry V. Kuzmin and Brigitte Stoll
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Alexander V. Sobolev: ISTerre, University Joseph Fourier, Grenoble 1 and CNRS, BP 53
Albrecht W. Hofmann: Max Planck Institute for Chemistry, Postfach 3060
Klaus Peter Jochum: Max Planck Institute for Chemistry, Postfach 3060
Dmitry V. Kuzmin: Max Planck Institute for Chemistry, Postfach 3060
Brigitte Stoll: Max Planck Institute for Chemistry, Postfach 3060

Nature, 2011, vol. 476, issue 7361, 434-437

Abstract: A young Hawaiian plume Sobolev et al. show that highly radiogenic strontium in melt inclusions from lavas of the Mauna Loa shield volcano in Hawaii have an isotopic composition matching that of sea water aged 200 million to 650 million years old. They infer that such sea water must have contaminated the Mauna Loa source rock prior to subduction, imparting a unique 'time stamp' and indicating that mantle circulation has an average speed of about 2 centimetres per year, which is more rapid than previously thought.

Date: 2011
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DOI: 10.1038/nature10321

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