- the process of mountain making or upheaval.
Origin of orogeny
Also called or·o·gen·e·sis [awr-uh-jen-uh-sis, or-uh-] /ˌɔr əˈdʒɛn ə sɪs, ˌɒr ə-/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the formation of mountain ranges by intense upward displacement of the earth's crust, usually associated with folding, thrust faulting, and other compressional processes
Word Origin and History for orogeny
Online Etymology Dictionary, © 2010 Douglas Harper
- The process of mountain formation, especially by folding and faulting of the Earth's crust and by plastic folding, metamorphism, and the intrusion of magmas in the lower parts of the lithosphere. Unlike epeirogeny, orogeny usually affects smaller regions and is associated with evidence of folding and faulting. The long chains of mountains often seen on the edges of continents form through orogeny.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.