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Bent Hawaiian-Emperor Hotspot Track: Inheriting the Mantle Wind
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Journal Article
Bent Hawaiian-Emperor Hotspot Track: Inheriting the Mantle Wind
2009
Overview
Bends in volcanic hotspot lineaments, best represented by the large elbow in the Hawaiian-Emperor chain, were thought to directly record changes in plate motion. Several lines of geophysical inquiry now suggest that a change in the locus of upwelling in the mantle induced by mantle dynamics causes bends in hotspot tracks. Inverse modeling suggests that although deep flow near the core-mantle boundary may have played a role in the Hawaiian-Emperor bend, capture of a plume by a ridge, followed by changes in sub-Pacific mantle flow, can better explain the observations. Thus, hotspot tracks can reveal patterns of past mantle circulation.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
