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The Clipperton Fracture Zone is a geological submarine fracture zone of the Pacific Ocean, with a length of some 4500 miles (7240 km).〔(【引用サイトリンク】title=Clipperton Fracture Zone )〕 It is one of the five major lineations of the northern Pacific floor, south of the Clarion Fracture Zone, discovered by the Scripps Institution of Oceanography in 1950. The fracture, an unusually mountainous topographical feature, begins east-northeast of the Line Islands and ends in the Middle America Trench off the coast of Central America.〔 It roughly forms a line on the same latitude as Kiribati and Clipperton Island. The fracture can be divided into four distinct parts: - The first, 127°–113° W, is a broad, low welt of some 900 miles, with a central trough 10 to 30 miles wide; - the second, 113°-107° W, is a volcano enriched ridge, 60 miles wide and 33 miles long; - the third, 107°-101° W, is a low welt with a central trough 1,200–2,400 feet deep which transects the Albatross Plateau; and - the fourth, 101°-96° W, contains the Tehuantepec Ridge which extends 400 miles northeast to the continental margin.〔 The Nova-Canton Trough is often seen as an extension of the fracture. ==References== 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「Clipperton Fracture Zone」の詳細全文を読む スポンサード リンク
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