Abstract
In the last 30 years, geologists have made much progress on understanding slabs, lithosphere, and mid-ocean ridges but mantle plumes remain enigmatic. In their Perspective, [Montagner and Ritsema][1] chart recent progress, largely based on seismic anisotropy, toward understanding how such plumes interact with mid-ocean ridges. Existing data are insufficient, however, to determine whether mantle plumes act independently from plate tectonics. The authors call for ocean bottom seismic stations to settle this question. [1]: http://www.sciencemag.org/cgi/content/full/294/5546/1472
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