翻訳と辞書 Words near each other ・ Oceanic climate ・ Oceanic core complex ・ Oceanic crust ・ Oceanic cuisine ・ Oceanic dispersal ・ Oceanic dolphin ・ Oceanic eclectus parrot ・ Oceanic feeling ・ Oceanic Feeling (album) ・ Oceanic flycatcher ・ Oceanic H&L Company No. 1 ・ Oceanic languages ・ Oceanic lightfish ・ Oceanic Linguistics ・ Oceanic physical-biological process ・ Oceanic plateau ・ Oceanic Platform of the Canary Islands ・ Oceanic Preservation Society ・ Oceanic puffer ・ Oceanic Remixes/Reinterpretations ・ Oceanic Society ・ Oceanic trench ・ Oceanic Victor ・ Oceanic whitetip shark ・ Oceanic Worldwide ・ Oceanic zone ・ Oceanic, British Columbia ・ Oceanic, New Jersey ・ Oceanic-Creations ・ Oceanicaulis Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Oceanic plateau ： ウィキペディア英語版 Oceanic plateau An oceanic plateau (also submarine plateau) is a large, relatively flat submarine region that rises well above the level of the ambient seabed.〔(oceanic plateau ). (2008). In Encyclopædia Britannica. Retrieved December 16, 2008, from Encyclopædia Britannica Online.〕 〔[http://www.academia.edu/1466847/Oceanic_plateaus. By Andrew C Kerr (2013). In Treatise on Geochemistry 2nd Edition, Oceanic plateau chapter. Retrieved May 25 2013 〕 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. ==List of oceanic plateaus== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oceanic plateau」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.