Metamorphic Rocks CH 3 Prentice Hall p CH 3 Prentice Hall p

Formation of Metamorphic Rocks Heat and Pressure deep beneath Earth’s surface can change any rock (ign, sed or meta) into metamorphic rock. Forces inside Earth push rock down towards the heat of the Mantle.

Formation of Metamorphic Rocks Pockets of magma can also provide heat. Pressure is due to the weight of the overlying rock. (Deeper=greater pressure)

Classifying Metamorphic Rocks Foliated Thin flat layering rock Grains arranged in parallel layers or bands. May split along the bands or layers. Non-Foliated Mineral grains are arranged randomly. Do not split into layers.

Foliated Parent RockMetamorphic Rock GraniteGneiss ShaleSlate Non-Foliated Parent RockMetamorphic Rock LimestoneMarble SandstoneQuartzite Classifying (Parent Rocks)

Uses of Metamorphic Rocks Marble Fine even grain, easy to cut into slabs Easily polished. Used for buildings and statues. (Taj Mahal) Slate Easily splits into flat pieces. Flooring roofing, walkways, chalkboards Comes in a variety of colors Used for trim on buildings