definitions

accretionary wedge

accretionary prism

noun

geology a body of deformed sediments, wedge-shaped in two dimensions or prism-shaped in three dimensions, that has been scraped off the surface of the oceanic lithosphere as it moves downwards beneath a continent or island arc. The sediments are added to the continental edge

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Nearby words

accrete, accretio cordis, accretion, accretion disk, accretionary growth, accretionary wedge, accrington, accroach, accroides gum, accrual, accrual basis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012