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orogeny Line breaks: or|ogeny
Pronunciation: /ɒˈrɒdʒəni/

Definition of orogeny in English:


[mass noun] Geology
A process in which a section of the earth’s crust is folded and deformed by lateral compression to form a mountain range: present rates of denudation and orogeny [count noun]: the Hercynian and Alpine orogenies
More example sentences
  • The Dalradian rocks in Arran were initially folded during the Caledonian orogeny into a recumbent structure known as the Aberfoyle synform.
  • The tectonic events began with the Penobscottian orogeny in the Cambrian Period that affected northwestern to north-central Maine.
  • Together with the Appalachian, Caledonian and Variscan orogens, the Uralian orogeny contributed to the assembly of the late Palaeozoic supercontinent of Pangaea.


Pronunciation: /ˌɔːrəʊˈdʒɛnɪsɪs/
Example sentences
  • Two main phases of orogenic activity are recognized: preAndean orogenesis and Andean orogenesis.
  • In north-west Scotland, for example, the lithosphere thickened during Caledonian orogenesis began to collapse under the influence of gravity from Early Devonian times.
  • This, he suggested, was an intentional mechanism for generating the prodigious amounts of heat necessary for such things as rapid orogenesis, the rapid melting of protoliths, etc.
Pronunciation: /ɒrə(ʊ)ˈdʒɛnɪk/
Example sentences
  • Previous work that indicates Late Cretaceous Palaeogene orogenic activity is presented first.
  • Recent studies of Proterozoic orogenic belts have shown that they may be underlain, at mid to lower crustal levels, by keels of Archaean crust.
  • The Uralide orogen differs from other Palaeozoic orogenic belts in that it has a crustal root, which appears to be absent in the Caledonide, Variscide and Appalachian orogens.
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