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  Encyclopedia of Keywords > Time > Events > Earthquakes > Plate Tectonics > Orogeny   Michael Charnine

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  1. An orogeny is a period of time where mountain building occurs.
  2. Orogeny is the process of mountain building.
  3. Orogeny is a geologic term associated with periods of mountain building.
  4. Orogeny is a fairly new winery from the newer-named Green Valley AVA (that---s American Viticultural Area) in Sonoma County.
  5. Orogeny: The tectonic process in which large areas are folded, thrust-faulted, metamorphosed, and subjected to plutonism.

Along Western

  1. Nevadan orogeny developed along western North America during the Jurassic Period.
  2. This terrane was added to North America with the Taconian orogeny.
  3. Andean orogeny Andes The Andes is a vast mountain system forming a continuous chain of highland along the western coast of South America.


  1. Euramerica (also known as Laurussia) was a minor supercontinent created in the Devonian by the collision of Laurentia and Baltica (Scandian Orogeny). (Web site)
  2. Gondwana, the supercontinent that was assembled during the Pan-African orogeny, was the largest Continent spanning from the Equator to the South Pole. (Web site)

North America

  1. It is broadly contemporary with the Acadian orogeny of eastern North America.
  2. Contributing to this arc, the continued pressure on the southwestern edge of North America formed the Sonoman orogeny, the ancestral Mexican plateau. (Web site)

Orogeny Usually

  1. Orogeny usually produces long linear structures, known as orogenic belts.
  2. Unlike epeirogeny, orogeny usually affects smaller regions and is associated with evidence of folding and faulting. (Web site)


  1. Sea bottom and near shore material may be overthrust into the orogeny covering some or all of the active area.
  2. This orogeny has been named for Caledonia, the Latin name for Scotland. (Web site)


  1. Cimmeria begins its collision with Laurasia to form the Cimmerian orogeny.
  2. An orogeny is underway when mountains begin to grow in the collision zone.
  3. Himalayan orogeny The Himalaya Mountains is a result of the ongoing collision of the Indian Plate with the Eurasian Plate. (Web site)
  4. Big Sky orogeny Proterozoic collision between the Hearne craton and the Wyoming craton in southwest Montana, 1770 mya.

Sevier Orogeny

  1. Compare the earlier Sevier orogeny and the still-earlier Nevadan orogeny of the late Jurassic — early Cretaceous. (Web site)
  2. The Atlantic lengthens and widens, the Sevier orogeny continues, and the Caribbean arc is formed. (Web site)
  3. The Laramide orogeny developed in the Late Cretaceous and continued into the Oligocene epoch, mostly synchronous with late stages of the Sevier orogeny. (Web site)


  1. Appalachian orogeny Appalachian Mountains, is a well studied orogenic belt resulting from a late Paleozoic collision between North America and Africa. (Web site)
  2. Appalachian orogeny, usually seen as the same as the Variscan orogeny in Europe.
  3. The Acadian orogeny is a middle Paleozoic deformation, especially in the northern Appalachians, between Alabama and Newfoundland. (Web site)

Late Proterozoic

  1. Grenville orogeny Worldwide during the late Proterozoic, 1300-1000 mya.
  2. Grenville orogeny Worldwide during the late Proterozoic In geology, the Proterozoic is an eon prior to the first abundant complex life on earth.

Eocene Through Miocene

  1. Alpine orogeny Formation of the Alps during Eocene through Miocene time.
  2. The Alpine orogeny, encompassing: the Formation of the Alps during the Eocene through Miocene Periods.
  3. Granville orogeny Hellenic orogeny Greece and Aegean area during Eocene through Miocene time.

Severely Deformed

  1. Frequently, rock formations that undergo orogeny are severely deformed and undergo metamorphism.
  2. Frequently, many of the rock formations involved in the collision (Orogeny) will be severely deformed and metamorphosed.

Taconic Orogeny

  1. This resulted in the Taconic orogeny, which formed the mountains of the same name west of the Hudson River. (Web site)
  2. Two "smaller" mountain-building episodes occurred in early Paleozoic time: The Taconic Orogeny and the Acadian Orogeny. (Web site)
  3. These rocks are turbidite deposits of an ancient ocean that was destroyed by orogenies in the Cambrian (Cadomian orogeny?) and Ordovician (Taconic orogeny?).

Caledonian Orogeny

  1. The Iapetus Ocean is slowly closing and by the Silurian the two continental blocks collide producing the Caledonian orogeny.
  2. The Caledonian orogeny is a mountain building event recorded in the mountains and hills of northern Scotland, Ireland, England, Wales, and west Norway.
  3. European orogenies The Caledonian orogeny Formation of the highlands of west Norway, Britain and Ireland in the Silurian Period.
  4. Caledonian orogeny (between Europe and Greenland) in Silurian time.
  5. Siberia broke away from Laurasia and drifted northwards, trailing remnants of the Caledonian orogeny in its wake. (Web site)


  1. Baltica and northern Avalonia collided first, causing the Caledonian Orogeny of the Silurian.
  2. Prior to the orogeny, Scotland formed part of the continent of Laurentia and England formed part of the continents of Avalonia and Baltica. (Web site)

Continental Collision

  1. Orogeny can occur due to continental collision or volcanic activity.
  2. Stern, R.J. 1994 Arc Assembly and continental collision in the Neoproterozoic East African orogeny---implications for the consolidation of Gondwana.
  3. Wikipedia: Alleghenian orogeny The Appalachian Orogeny, a result of three separate continental collisions. (Web site)


  1. During orogeny, deeply buried rocks may be pushed to the surface.
  2. The Grenville Orogeny, which may have been caused by a similar collision, buried the Adirondack rocks.

Mountain Building

  1. When two continental plates collide obduction of the oceanic crust between is often a part of the resulting orogeny, or mountain building episode.
  2. The Variscan orogeny (mountain building period) around 280 Ma caused major deformation in south west England.
  3. Mesozoic Era Major mountain building (orogeny) began on the western margins of both North and South America and between the separating fragments of Gondwana.

Circa Mya

  1. Mazatzal orogeny US mid to south western circa 1600 mya Laramide orogeny Rocky Mountains, western North America, 40-70 Myr ago.
  2. Mazatzal orogeny mid to south western USA, circa 1600 mya.


  1. The collision of the continents raised mountains along the suture, called the Cimmerian Orogeny.
  2. Precambrian suture, crustal structure, Northern and Central Rockies, Precambrian geophysics, seismic reflection, gravity, Laramie orogeny.

During Late

  1. This range formed during the late Palaeozoic era, the Alleghenian orogeny of middle Permian, circa 270 M.y. (Web site)
  2. The orogeny extensively deformed Paleozoic rocks of the Great Basin in Nevada and western Utah during Late Devonian and Early Mississippian time.


  1. The Alpine orogeny (sometimes also called Alpide orogeny) is an orogenic phase in the Tertiary that formed the mountain ranges of the Alpide belt. (Web site)
  2. Phase 4 (Interior Basin and Nevadan Orogeny) Depositional patterns returned to that of phase 2, thickening in the west. (Web site)

Metamorphic Grade

  1. Primarily deformed during the Acadian orogeny at medium metamorphic grade. (Web site)
  2. Middle Proterozoic basement deformed at high metamorphic grade during the Grenville orogeny, and again, at medium grade, during the Taconian orogeny. (Web site)

Mountain Formation

  1. There are other modes of mountain formation and orogeny but certainly continental collision is one of the most important.
  2. This results from the isostasy associated with orogeny (mountain formation). (Web site)


  1. This thrusting is a result of the Taconic Orogeny during the Ordovician period. (Web site)
  2. List of orogenies North America n orogenies Caledonian orogeny the Taconic phase in the NE U.S. and Canada during the Ordovician Period.
  3. Of note, two additional mountain-building periods, the Acadian orogeny and the Alleghanian orogeny, occurred during the Paleozoic Era. (Web site)


  1. The Sevier orogeny was a mountain-building event that affected western North America from Canada to the north to Mexico to the south. (Web site)
  2. The current orogenic event is causing parts of the Asian continent to deform westward and eastward on either side of the orogeny. (Web site)
  3. Last check: 2007-10-09) The resulting orogeny ( mountain-building event) is called the Nevadan orogeny by geologists. (Web site)
  4. Rodinia began forming about 1.3 billion years ago from three or four pre-existing continents, an event known as the Grenville orogeny.


  1. If the orogeny is due to two continents colliding, the resulting mountains can be very high (see Himalaya).
  2. In other words, the colliding Antler terrane shoved sediments that had been deposited in deep water over the continental shelf to form the Antler orogeny.

Western Edge

  1. The Pacific plate continued to ride the western edge of North America and the Sevier orogeny (southwestern Rocky Mountains) began. (Web site)
  2. Hit-and-run collision model for the Laramide orogeny, western United States. (Web site)
  3. North American orogenies Wopmay orogeny Along western edge of Canadian shield, 2100-1900 mya.


  1. Physiography The process of orogeny can take tens of millions of years and build mountains from plains or even the ocean floor.
  2. Orogeny - Search Results - MSN Encarta Orogeny, period of mountain-building usually extending over tens of millions of years. (Web site)

During Permian

  1. Ural orogeny in Eurasia during Permian time.
  2. The Ozark Plateau is a broad uplifted area which resulted from the Ouachita Orogeny to the south during the Permian Period.
  3. An orogeny that deformed the Ouachita mobile belt during the Pennsylvanian Period. (Web site)

Orogeny Occurred

  1. The Laramide orogeny occurred in a series of pulses, with quiescent phases intervening.
  2. The Alpine orogeny occurred when the continents Africa and India and the small Cimmerian plate collided (from the south) with Eurasia in the north. (Web site)


  1. The physical manifestations of orogenesis (the process of orogeny) are orogenic belts or orogens.
  2. This orogeny was the result of convergent boundary tectonism between approximately 140 million years (Ma) ago, and 50 Ma.
  3. The Antler orogeny was first defined by the American geologist Ralph J. Roberts.
  4. Collins and Windley (2002) propose that in this orogeny Azania collided with the Congo --- Tanzania --- Bangweulu Block.
  5. The Laramide orogeny originally was believed to mark the Cretaceous-Tertiary boundary. (Web site)


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