cataclastic metamorphism

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• Cataclastic — rocks contain angular fragments formed by cataclasis. Cataclasis is a deformation of the rock caused by fracture and rotation of aggregates or mineral grains. The term cataclastic refers to the structure produced in a rock by the actions of… …   Wikipedia

• Metamorphism — For other uses, see Metamorphism (disambiguation). Schematic representation of a metamorphic reaction. Abbreviations of minerals: act = actinolite; chl = chlorite; ep = epidote; gt = garnet; hbl = hornblende; plag = plagioclase. Two minerals… …   Wikipedia

• cataclasis — cataclastic /kat euh klas tik/, adj. /kat euh klay sis, keuh tak leuh sis/, n. Petrol. a process of deformation or metamorphism in which the grains of a rock are fractured and rotated. [ < Gk katáklasis refraction, equiv. to katakla , s. of… …   Universalium

• Pilbara craton — The Pilbara craton (the Pilbara province in northwest Western Australia), along with the Kaapvaal craton (the Kaapvaal province of South Africa) are the only remaining areas of pristine Archaean 3.6 2.7 Ga crust on Earth. Similarities of their… …   Wikipedia

• cataclasis — n. (pl. cataclases) Geol. the natural process of fracture, shearing, or breaking up of rocks. Derivatives: cataclastic adj. Etymology: mod.L f. Gk kataklasis breaking down * * * ˌkad.əˈklāsə̇s; kəˈtakləsə̇s, kaˈ noun (plural cataclases ˌsēz)… …   Useful english dictionary

• sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

• Merzbow discography — Masami Akita discography Releases ↙Studio albums 260 ↙Live albums 65 …   Wikipedia

• cataclastite —       any rock produced by dynamic metamorphism during which faulting, granulation, and flowage may occur in previously crystalline parent rocks. When stress exceeds breaking strength, a rock yields by rupture. The rock may break as a unit, or… …   Universalium