Orogeny refers to forces and events leading to a particular type of long-term severe structural deformation of the earth's crust, namely, long arcuate tracts of highly deformed rock called orogens or orogenic belts.
Orogeny refers to forces and events leading to a severe structural deformation of the earth's crust due to the engagement of tectonic plates. Response to such engagement results in the formation of long tracts of highly deformed rock called orogens or orogenic belts.