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Cenozoic changes in Pacific absolute plate motion

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Item Summary

Title: Cenozoic changes in Pacific absolute plate motion
Authors: Sterling, Nile Akel Kevis
Advisor: Wessel, Paul
Issue Date: Dec 2003
Publisher: University of Hawaii at Manoa
Abstract: Using the polygonal finite rotation method (PFRM) in conjunction with the hotspotting technique, a model of Pacific absolute plate motion (APM) from 65 Ma to the present has been created. This model is based primarily on the Hawaiian-Emperor and Louisville hotspot trails but also incorporates the Cobb, Bowie, Kodiak, Foundation, Caroline, Marquesas and Pitcairn hotspot trails. Using this model, distinct changes in Pacific APM have been identified at 48, 27, 23, 18, 12 and 6 Ma. These changes are reflected as kinks in the linear trends of Pacific hotspot trails. The sense of motion and timing of a number of circum Pacific tectonic events appear to be correlated with these changes in Pacific APM. With the model and discussion presented here it is suggested that Pacific hotpots are fixed with respect to one another and with respect to the mantle. If they are moving as some paleomagnetic results suggest, they must be moving coherently in response to large-scale mantle flow.
Description: x, 73 leaves
URI/DOI: http://hdl.handle.net/10125/7048
Rights: All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections:M.S. - Geology and Geophysics



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