obduction

Science Dictionary
obduction   (ŏb-dŭk'shən)  Pronunciation Key 
A geologic process in which the edge of a tectonic plate consisting of oceanic crust is thrust over the edge of an adjacent plate consisting of continental crust. Compare subduction.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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