Metamorphic Rocks Metamorphic Rocks are formed from sedimentary rocks, igneous rocks, or other metamorphic rocks that have been changed by HEAT or PRESSURE.
Metamorphic Rocks Sandstone Quartzite Heat Pressure
Metamorphic Rocks Shale Slate Heat Pressure
Metamorphic Rocks Limestone Marble Heat Pressure
Metamorphic Rocks Granite Gneiss Heat Pressure
Metamorphic Rocks
Metamorphic Rocks ALL ROCKS are classified by their: Origin Composition Texture
Metamorphic rocks are formed under ground by heat and/or pressure - Origin - How they are formed Metamorphic rocks are formed under ground by heat and/or pressure AND/ OR
- Composition - Composition is what the rock is made of. Composition helps us determine how and where the rock was formed. Index minerals- form only in metamorphic rock and help us to identify the temperature, depth, and pressure that was used to form the metamorphic rock
- Texture - Texture is the position of the grains
- Foliated - Mineral grains are arranged in bands or layers.
Mineral grains are not arranged in bands or layers. - Non-Foliated - Mineral grains are not arranged in bands or layers.