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Pb isotope evidence in the South Atlantic for migrating ridge—hotspot interactions

Nature volume 322, pages 137–144 (1986)Cite this article

Abstract

Variations of Pb isotopes in basalts erupted along the Mid-Atlantic Ridge suggest that heterogeneities in the upper mantle beneath the South Atlantic are highly structured and dominated by distinct east-west channels connecting the off-ridge plumes with the westward-migrating ridge. These preferential flows are superimposed on a broad radical dispersion of the St Helena and Tristan plumes into the asthenosphere before the ridge overrode these plumes.

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Authors and Affiliations

  1. Graduate School of Oceanography, University of Rhode Island, Kingston, Rhode Island, 02881, USA

    B. B. Hanan, R. H. Kingsley & J-G. Schilling

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  1. B. B. Hanan
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  2. R. H. Kingsley
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  3. J-G. Schilling
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Hanan, B., Kingsley, R. & Schilling, JG. Pb isotope evidence in the South Atlantic for migrating ridge—hotspot interactions. Nature 322, 137–144 (1986). https://doi.org/10.1038/322137a0

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