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- Laramide_orogeny abstract "The Laramide orogeny was a period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the orogeny are in dispute. The Laramide orogeny occurred in a series of pulses, with quiescent phases intervening. The major feature that was created by this orogeny was deep-seated, thick-skinned deformation, with evidence of this orogeny found from Canada to northern Mexico, with the easternmost extent of the mountain-building represented by the Black Hills of South Dakota. The phenomenon is named for the Laramie Mountains of eastern Wyoming. The Laramide orogeny is sometimes confused with the Sevier orogeny, which partially overlapped it in time and space.The orogeny is commonly attributed to events off the west coast of North America, where the Kula and Farallon Plates were sliding under the North American plate. Most hypotheses propose that the angle of subduction became shallow, and as a consequence, no magmatism occurred in the central west of the continent, and the underlying oceanic lithosphere actually caused drag on the root of the overlying continental lithosphere. One cause for shallow subduction may have been an increased rate of plate convergence. Another proposed cause was subduction of thickened oceanic crust.Magmatism associated with subduction occurred not near the plate edges (as in the volcanic arc of the Andes, for example), but far to the east, called the Coast Range Arc. Geologists call such a lack of volcanic activity near a subduction zone a magmatic null. This particular null may have occurred because the subducted slab was in contact with relatively cool continental lithosphere, not hotter asthenosphere. One result of shallow angle of subduction and the drag that it caused was a broad belt of mountains, some of which were the progenitors of the Rocky Mountains. Part of the proto-Rocky Mountains would be later modified by extension to become the Basin and Range Province.".
- Laramide_orogeny thumbnail Shallow_subduction_Laramide_orogeny.png?width=300.
- Laramide_orogeny wikiPageExternalLink 1998_Laramide.htm.
- Laramide_orogeny wikiPageExternalLink Liu2010_NatureGeoscience.pdf.
- Laramide_orogeny wikiPageExternalLink laram_yell.html.
- Laramide_orogeny wikiPageID "250959".
- Laramide_orogeny wikiPageRevisionID "606046064".
- Laramide_orogeny hasPhotoCollection Laramide_orogeny.
- Laramide_orogeny subject Category:Black_Hills.
- Laramide_orogeny subject Category:Cretaceous.
- Laramide_orogeny subject Category:Eocene.
- Laramide_orogeny subject Category:Geology_of_Alaska.
- Laramide_orogeny subject Category:Geology_of_British_Columbia.
- Laramide_orogeny subject Category:Geology_of_Montana.
- Laramide_orogeny subject Category:Geology_of_South_Dakota.
- Laramide_orogeny subject Category:Geology_of_Wyoming.
- Laramide_orogeny subject Category:Geology_of_Yukon.
- Laramide_orogeny subject Category:Geology_of_the_Rocky_Mountains.
- Laramide_orogeny subject Category:Orogeny.
- Laramide_orogeny subject Category:Paleocene.
- Laramide_orogeny type BlackHills.
- Laramide_orogeny type GeologicalFormation109287968.
- Laramide_orogeny type Hill109303008.
- Laramide_orogeny type NaturalElevation109366317.
- Laramide_orogeny type Object100002684.
- Laramide_orogeny type PhysicalEntity100001930.
- Laramide_orogeny type YagoGeoEntity.
- Laramide_orogeny type YagoPermanentlyLocatedEntity.
- Laramide_orogeny comment "The Laramide orogeny was a period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the orogeny are in dispute. The Laramide orogeny occurred in a series of pulses, with quiescent phases intervening.".
- Laramide_orogeny label "Laramide orogenese".
- Laramide_orogeny label "Laramide orogeny".
- Laramide_orogeny label "Laramische Gebirgsbildung".
- Laramide_orogeny label "Orogenesi Laramide".
- Laramide_orogeny label "Orogenia Laramide".
- Laramide_orogeny label "Orogenèse laramienne".
- Laramide_orogeny label "Ларамийский орогенез".
- Laramide_orogeny label "ララミー変動".
- Laramide_orogeny sameAs Laramische_Gebirgsbildung.
- Laramide_orogeny sameAs Orogenia_Laramide.
- Laramide_orogeny sameAs Orogenèse_laramienne.
- Laramide_orogeny sameAs Orogenesi_Laramide.
- Laramide_orogeny sameAs ララミー変動.
- Laramide_orogeny sameAs Laramide_orogenese.
- Laramide_orogeny sameAs m.01l7dq.
- Laramide_orogeny sameAs Q206492.
- Laramide_orogeny sameAs Q206492.
- Laramide_orogeny sameAs Laramide_orogeny.
- Laramide_orogeny wasDerivedFrom Laramide_orogeny?oldid=606046064.
- Laramide_orogeny depiction Shallow_subduction_Laramide_orogeny.png.
- Laramide_orogeny isPrimaryTopicOf Laramide_orogeny.