1. Metamorphic Rocks

2. How do they form? These rocks form from
heat and/or pressure deep beneath Earth’s surface
heat and/or pressure created on Earth’s surface during times of mountain building

3. Classifying Metamorphic Rocks
The first type of metamorphic rocks are foliated
Foliated is when the mineral grains in the rock have been squeezed and flattened into a sheet-like appearance

4. Other types of foliated metamorphic rocks may look like sheets of rocks stacked on top of one another
The metamorphic rock Slate

5. The other type of metamorphic rock is nonfoliated
Nonfoliated metamorphic rocks have mineral grains that are arranged randomly

6. Making Metamorphic Rocks
The sedimentary rock Shale can be metamorphosed into the Metamorphic rock Slate

7. Making Metamorphic Rocks
The igneous rock Granite can be metamorphosed into the Metamorphic rock Gneiss

8. Making Metamorphic Rocks
The sedimentary rock Limestone can be metamorphosed into the Metamorphic rock Marble