from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of orogeny.
Sorry, no etymologies found.
Rocks vary in age from Precambrian to Devonian and have been subjected to two major structural events, the Frenchman and Tabberaberan orogenies.
I don't deny that ocean basins open and close, but I think that it is too neat, too pat, and inadequately describes most real orogenies.