from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The process of mountain formation, especially by a folding and faulting of the earth's crust.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the process of mountain building by the upward folding of the Earth's crust.

from The Century Dictionary and Cyclopedia

  • n. Same as orogenesis.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the process of mountain formation (especially by the upward displacement of the earth's crust)


from Wiktionary, Creative Commons Attribution/Share-Alike License

From oro- + -geny.


  • Scientist said that Halong bay has experienced at least 500 million years in various of ancient geographic condition such as orogeny, marine transgression and marine regression.

    The News is - The News is Now Public

  • These mountains are part of the western Iberian old Hercynian system, which constitutes medium elevations with a smooth relief, scarcely influenced by the Alpine orogeny.

    Northwest Iberian montane forests

  • In this orogeny, compressional forces squished sedimentary deposits that existed between the converging continental plates and rocks at the margin of the Eurasian and Indian plates upward in elevation.


  • Many ridges are formed on well-cemented, relatively resistant material such as sandstone or conglomerate; they are often rather parallel and alternate with valleys but, in central Pennsylvania, they zigzag because resistant strata were compressed into plunging folds during orogeny and later eroded.

    Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)

  • This is the northernmost and wettest of the central Asian depressions, remnants of a Tertiary era inland sea, with relict glaciers, glacier lakes and a wide variety of rock types, the result of a long series of successive eras of deposition and orogeny.

    Uvs Nuur Basin, Russian Federation, Republic of Tuva and Mongolia

  • The Alpine orogeny has shaped the complex Pyrenean landform.

    Pyrenees conifer and mixed forests

  • This range was shaped by an intense Alpine orogeny into a complex landscape characterized by steep rocky slopes, amazing canyons, karstic high plains, and high summits.

    Cantabrian mixed forests

  • Alternately, the Galician-Portuguese Western extreme of the ecoregion is characterized by lower smooth elevations, which correspond to very old massifs shaped by the late Paleozoic Hercynian orogeny.

    Cantabrian mixed forests

  • Neotropical floristic diversity: Phytogeographical connections between Central and South America, Pleistocene climatic fluctuations, or an accident of the Andean orogeny.

    Serra do Mar coastal forests

  • The geologic romance of Appalachian orogeny and the sheer beauty of places such as the Red River Gorge all but dictate the land route.

    Archive 2008-04-01


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    June 11, 2011

  • Is yarb using some special kind of "whisper font"?

    *Is jealous, because I have no idea how to do that*

    June 10, 2011

  • Definitely belongs on a "sounds filthy" list.

    June 10, 2011

  • When Wales and England met Scotland 430m years ago during the frankly smutty-sounding Caledonian orogeny, a range of mountains – the Caledonides – of Himalayan proportions was formed at the centre of a continent that contained all the world's landmass.
    - Ian Vince, Britain's Historic Past, in, 26-5-11.

    June 10, 2011

  • Then comes the folding and the faulting, and making mountains out of molehills.

    May 11, 2010

  • You know, of course, that subduction leads to orogeny.

    May 11, 2010