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Metamorphic Rocks The changing of one type of rock to another by heat and pressure. Types of Metamorphism 1) Contact Metamorphism: –Heat from magma changes nearby rocks. 2) Regional Metamorphism: –The movement of one tectonic plate against another creates high pressure, which changes the rocks. Types of Metamorphic Rocks Foliated – shows metamorphic textures – Banding- layers of dark and light minerals (gneiss) – Rock Cleavage- consists of thin layers – Schistocity- shiny or waxy appearance •Non-Foliated – shows no metamorphic textures (marble) Types of Foliation Banding Schistocity Rock Cleavage
