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 (ô-rŏj′ə-nē) also or·o·gen·e·sis (ôr′ə-jĕn′ĭ-sĭs)
The process of mountain formation, especially by a folding and faulting of the earth's crust.

or′o·gen′ic (ôr′ə-jĕn′ĭk) adj.
or′o·gen′i·cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ɒˈrɒdʒɪnɪ) or


(Geological Science) the formation of mountain ranges by intense upward displacement of the earth's crust, usually associated with folding, thrust faulting, and other compressional processes
orogenic, orogenetic adj
ˌoroˈgenically, ˌorogeˈnetically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ɔˈrɒdʒ ə ni, oʊˈrɒdʒ-)

the process of mountain formation or upheaval.
or•o•gen•ic (ˌɔr əˈdʒɛn ɪk, ˌɒr ə-) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
orogenesis, orogeny - Orogenesis is the formation of mountains (Greek oros) and orogeny is the process by which mountains are formed.
See also related terms for mountains.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.


the process by which mountains are created. — orogenic, orogenetic, adj.
See also: Geology
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.


A phase of mountain building.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.orogeny - the process of mountain formation (especially by the upward displacement of the earth's crust)
geologic process, geological process - (geology) a natural process whereby geological features are modified
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Since the Late Palaeozoic the southern margin of the Junggar Basin has undergone multi-stage tectonic processes related to the orogenies in the Hercynian, Indosinian, Yanshanian and Himalayan.
For this Special Volume, the Palaeozoic history was grouped into five different orogenic cycles, which culminate in the orogenies: Ross (Cambrian-Ordovician), Ocloyic (Ordovician-Devonian), Famatinian (Ordovician-Silurian), Chanic (Devonian-Carboniferous) and Gondwanan or San Rafael (Carboniferous-Permian).
The Jinning, Caledonian, Hercynian, Indosinian, and Yanshanian orogenies contributed to compressional setting and resulted in a sudden decrease in distribution numbers of siliceous rock.
New England is composed of tectonic blocks, microcontinents, and/or terranes accreted to eastern Laurentia primarily during the Silurian-Devonian Salinic, Acadian, and Neoacadian orogenies, and the Pennsylvanian-Permian Alleghanian orogeny (O'Hara and Gromet 1985; Goldstein 1989; Skehan and Rast 1990; Wintsch et al.
Finding the rift extension led the team to propose that the mountains are actually the result of multiple orogenies, or mountain building episodes, involving a unique combination of continental collision, rifting and uplift processes not previously seen together in other mountain ranges.
Other older and younger Gondwana sources (older: Albany Fraser, Eastern Ghats, Prince Charles Mountains; younger: Delamerian, Ross, Kuunga, and East African orogenies) have similar Hf isotopic signatures but do not have overlapping ages (Griffin et al., 2004; Flowerdew et al., 2007; Veevers et al., 2009; Dhuime et al., 2011; Glen et al., 2011; Kirkland et al., 2011).
The Migmatised Gneiss Complex polycyclic events are due to the Liberian, Eburnean, Kibaran and Pan-African orogenies, which modified the Precambrian geology of Nigeria.
The Canadian Shield is itself a distinctive 'region' of Canada, and was therefore treated as such (Chapter 4), but the description of its geology followed a sequential approach based on the age of the various terranes and orogenies. This worked well, in part because many of the Precambrian terranes are quite geographically limited in area or distribution, and therefore the description of each unit served as a miniregional summary as well.
Paleozoic sedimentation took place between two major orogenies called Taconic ([approximately equal to] 600-430 Ma) and Appalachian ([approximately equal to] 360-270 Ma) equivalent to the European Caledonian and Hercinian, respectively, such events changed the nature and distribution of pre-existing rocks [4].
The sectors corresponding to the most ancient cycles, for example, the Caledonian and Hercynian orogenies, have been worn away into erosion surfaces and have since been deformed and renewed by more recent cycles.