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- Oceanic_plateau abstract "An oceanic plateau (also submarine plateau) is a large, relatively flat submarine region that rises well above the level of the ambient seabed. While many oceanic plateaus are composed of continental crust, and often form a step interrupting the continental slope, some plateaus are undersea remnants of large igneous provinces. These were formed by the equivalent of continental flood basalts such as the Deccan Traps in India and the Snake River Plain in the Pacific Northwest of the United States. Geologists believe that igneous oceanic plateaus may well represent a stage in the development of continental crust as they are generally less dense than oceanic crust while still being denser than normal continental crust.Density differences in crustal material largely arise from different ratios of various elements, especially silicon. Continental crust has the highest amount of silicon (such rock is called felsic). Oceanic crust has a smaller amount of silicon (mafic rock). Igneous oceanic plateaus have a ratio intermediate between continental and oceanic crust, although they are more mafic than felsic.However, when a plate carrying oceanic crust subducts under a plate carrying an igneous oceanic plateau, the volcanism which erupts on the plateau as the oceanic crust heats up on its descent into the mantle erupts material which is more felsic than the material which makes up the plateau. This represents a step toward creating crust which is increasingly continental in character, being less dense and more buoyant. If an igneous oceanic plateau is subducted underneath another one, or under existing continental crust, the eruptions produced thereby produce material that is yet more felsic, and so on through geologic time.".
- Oceanic_plateau wikiPageExternalLink abstract_95369.htm.
- Oceanic_plateau wikiPageExternalLink les-plateaux-oceaniques.
- Oceanic_plateau wikiPageID "4607613".
- Oceanic_plateau wikiPageRevisionID "590769094".
- Oceanic_plateau hasPhotoCollection Oceanic_plateau.
- Oceanic_plateau subject Category:Coastal_and_oceanic_landforms.
- Oceanic_plateau subject Category:Oceanic_plateaus.
- Oceanic_plateau subject Category:Physical_oceanography.
- Oceanic_plateau subject Category:Plate_tectonics.
- Oceanic_plateau type GeologicalFormation109287968.
- Oceanic_plateau type Highland109302616.
- Oceanic_plateau type NaturalElevation109366317.
- Oceanic_plateau type Object100002684.
- Oceanic_plateau type OceanicPlateaus.
- Oceanic_plateau type PhysicalEntity100001930.
- Oceanic_plateau type Tableland109453008.
- Oceanic_plateau type YagoGeoEntity.
- Oceanic_plateau type YagoPermanentlyLocatedEntity.
- Oceanic_plateau comment "An oceanic plateau (also submarine plateau) is a large, relatively flat submarine region that rises well above the level of the ambient seabed. While many oceanic plateaus are composed of continental crust, and often form a step interrupting the continental slope, some plateaus are undersea remnants of large igneous provinces.".
- Oceanic_plateau label "Meseta oceánica".
- Oceanic_plateau label "Oceanic plateau".
- Oceanic_plateau label "Oceanisch plateau".
- Oceanic_plateau label "Ozeanisches Plateau".
- Oceanic_plateau label "Planalto oceânico".
- Oceanic_plateau label "Океаническое плато".
- Oceanic_plateau label "海台".
- Oceanic_plateau label "海底高原".
- Oceanic_plateau sameAs Ozeanisches_Plateau.
- Oceanic_plateau sameAs Meseta_oceánica.
- Oceanic_plateau sameAs 海台.
- Oceanic_plateau sameAs 해대.
- Oceanic_plateau sameAs Oceanisch_plateau.
- Oceanic_plateau sameAs Planalto_oceânico.
- Oceanic_plateau sameAs m.0ccbzj.
- Oceanic_plateau sameAs Q1271224.
- Oceanic_plateau sameAs Q1271224.
- Oceanic_plateau sameAs Oceanic_plateau.
- Oceanic_plateau wasDerivedFrom Oceanic_plateau?oldid=590769094.
- Oceanic_plateau isPrimaryTopicOf Oceanic_plateau.