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Q. Which of the below is a metamorphic rock form characterised by banding caused by segregation of different types of rock, typically light and dark silicates?
Answer: Gneiss
Notes: Gneiss is a common and widely distributed type of metamorphic rock. Gneiss is formed by high temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Orthogneiss is gneiss derived from igneous rock. Paragneiss is gneiss derived from sedimentary rock.

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