Metamorphic Rocks

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

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

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

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

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

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

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