Evidence for mantle plumes?

Don L. Anderson and James H. Natland
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Don L. Anderson: * Seismological Laboratory, California Institute of Technology, MC 252-21, Pasadena, California 91125, USA. dla@gps.caltech.edu
James H. Natland: Marine Geology and Geophysics, Rosenstiel School of Marine and Atmospheric Science, University of Miami

Nature, 2007, vol. 450, issue 7169, E15-E15

Abstract: Abstract Arising from: B. Bourdon, N. M. Ribe, A. Stracke, A. E. Saal & S. P. Turner Nature 444, 713–717 (2006)10.1038/nature05341 ; Bourdon et al. reply Geophysical hotspots have been attributed to partially molten asthenosphere, fertile blobs, small-scale convection and upwellings driven by core heat1,2,3,4. Most are short-lived or too close together to be deeply seated, and do not have anomalous heat flow5,6 or temperature7,8; many are related to tectonic features9,10,11. Bourdon et al.12 investigate the dynamics of mantle plumes from uranium-series geochemistry and interpret their results as evidence for thermal plumes. Here we show why alternative mechanisms of upwelling and melting should be considered.

Date: 2007
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DOI: 10.1038/nature06376

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