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Metamorphic Rocks Questions • What are metamorphic rocks? Rocks that have undergone a physical or chemical change • What processes are involved in forming metamorphic rocks? Heat and Pressure • • http://www.youtube.com/watch?v=tI344TmxN-I http://www.youtube.com/watch?v=e15n7-zq0mA There are different types of Metamorphic Rocks • Foliated (direct heat and pressure) Gneiss Schist Slate Phyllite ∙ Non- Foliated Marble Quartzite Identifying Metamorphic Rocks Gneiss is foliated metamorphic rock that has a banded appearance and is made up of granular mineral grains Marble is a non-foliated metamorphic rock that is produced from the metamorphism of limestone Slate is a foliated metamorphic rock that is formed through the metamorphism of shale Quartzite is a non-foliated metamorphic rock that is produced by the metamorphism of sandstone Schist is metamorphic rock with well developed foliation. It often contains significant amounts of mica which allow the rock to split into thin pieces. Metamorphism can occur in numerous ways
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