Orogeny



[aw-roj-uh-nee, oh-roj-] /ɔˈrɒdʒ ə ni, oʊˈrɒdʒ-/

noun, Geology.
1.
the process of mountain making or upheaval.
/ɒˈrɒdʒɪnɪ/
noun
1.
the formation of mountain ranges by intense upward displacement of the earth’s crust, usually associated with folding, thrust faulting, and other compressional processes
n.

“mountain forming,” 1890, from French orogénie; see oro- + -geny. Related: Orogenic.
orogeny (ô-rŏj’ə-nē) also orogenesis
(ô-rŏj’ə-nē)
The process of mountain formation, especially by folding and faulting of the Earth’s crust and by plastic folding, metamorphism, and the intrusion of magmas in the lower parts of the lithosphere. Unlike epeirogeny, orogeny usually affects smaller regions and is associated with evidence of folding and faulting. The long chains of mountains often seen on the edges of continents form through orogeny.

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