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subduction zone

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noun

geology a long narrow, often arcuate, zone along which subduction takes place

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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

Scientific definitions for subduction zone

subduction zone

A convergent plate boundary where one plate subducts beneath the other, usually because it is denser. The western coast of South America is roughly coincident with a subduction zone in which a plate consisting of ocean floor is subducting beneath the continental mass of South America.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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