orogeny
/ɒˈrɒdʒəni
/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...
- 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
/ noun ...- 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.
orogenetic
orogenic
- 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.