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Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting.〔(Oilfield Glossary )〕 It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix. == Types of cataclasite == There are many varieties of cataclasite, classified by the percentage of the volume formed from the matrix. * Protocataclasite: protocataclasite is a type of cataclasite in which the matrix takes up less than 50% of the total volume. * Mesocataclasite: mesocataclasite is a type of cataclasite in which the matrix occupies between 50 and 90 percent of the total volume. * Ultracataclasite: ultracataclasite is a type of cataclasite characterized by a matrix occupying greater than 90% of the total volume. * Foliated cataclasite: foliated cataclasite is a type of cataclasite with a significant content of clay. Grades through to fault (clay) gouge when the proportion of clay is greater than 70%. * Fault breccia: fault breccia is a medium to coarse-grained cataclasite. 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「Cataclasite」の詳細全文を読む スポンサード リンク
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