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orogeny |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.06 sec. |
orogenyMountain-building event, generally one that occurs in a geosyncline. Orogeny tends to occur during a relatively short geologic time frame. It is usually accompanied by folding and faulting of strata and by the deposition of sediments in areas adjacent to the orogenic belt. Orogenies may result from continental collisions, the underthrusting of continents by oceanic plates, the overriding of oceanic ridges by continents, and other causes. See also Acadian orogeny, Alleghenian orogeny, Alpine orogeny, Laramide orogeny, Taconic orogeny. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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During the Jurassic to Cretaceous periods (160 to 130 Ma), these rocks were subjected to compressional orogenesis related to large-scale plate convergence. During collision and orogenesis, platformal sequences may be entirely removed by uplift and erosion. Current or paleotopography and evolution of P-T conditions through time describe vertical crustal movements during orogenesis as well as the movement of heat through the crust. |
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