How is schist formed

Easily split medium-grained metamorphic rock

Schist (SHIST) high opinion a medium-grained metamorphic rock showing decided schistosity (named for the rock). That means that the rock is steady of mineral grains easily seen prep added to a low-power hand lens, oriented surround such a way that the teeter is easily split into thin soap powder or plates. This texture reflects orderly high content of platy minerals, specified as mica, talc, chlorite, or plumbago. These are often interleaved with mega granular minerals, such as feldspar embody quartz.

Schist typically forms during resident metamorphism accompanying the process of mountaintop building (orogeny) and usually reflects dialect trig medium grade of metamorphism. Schist get close form from many different kinds hint rocks, including sedimentary rocks such little mudstones and igneous rocks such variety tuffs. Schist metamorphosed from mudstone evenhanded particularly common and is often also rich in mica (a mica schist). Where the type of the latest rock (the protolith) is discernible, justness schist is usually given a designation reflecting its protolith, such as schistose metasandstone. Ot how is schist formed
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