Share this entry

Share this page

orogeny

Line breaks: or|ogeny
Pronunciation: /ɒˈrɒdʒəni
 
/

Definition of orogeny in English:

noun

[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.

Derivatives

orogenesis

1
noun
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.

orogenic

2
Pronunciation: /ɒrə(ʊ)ˈdʒɛnɪk/
adjective
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.

Definition of orogeny in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day prepotent
Pronunciation: prɪˈpəʊt(ə)nt
adjective
greater than others in power or influence