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Courtillot et al. 2003

Courtillot, V., Davaille, A., Besse, J. and Stock, J. (2003). Three distinct types of hotspots in the Earth's mantle. Earth and Planetary Science Letters 205(3-4): 295-308.

The origin of mantle hotspots is a controversial topic. Only seven ('primary') out of 49 hotspots meet criteria aimed at detecting a very deep origin (three in the Pacific, four in the Indo-Atlantic hemisphere). In each hemisphere these move slowly, whereas there has been up to 50 mm/a motion between the two hemispheres prior to 50 Ma ago. This correlates with latitudinal shifts in the Hawaiian and Reunion hotspots, and with a change in true polar wander. We propose that hotspots may come from distinct mantle boundary layers, and that the primary ones trace shifts in quadrupolar convection in the lower mantle. (C) 2002 Elsevier Science B.V. All rights reserved.

BACKGROUND DATA FILES

	Abstract
	Abstract

	Table 1
	Table 1

Keywords
hotspots, mantle plumes, convection, true polar wander, flood basalts, shear-velocity, plate motions, plume heads, pacific, models, convection, atlantic, boundary, heterogeneities

Journal
Earth and Planetary Science Letters
http://www.elsevier.com/wps/product/cws_home/503328

Publisher
Elsevier Science
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