E.3.2.3 Metamorphic Rocks

These rocks are formed when pressure and high temperatures change the texture and mineral composition of the rock.

• Metamorphic Rocks
• Sedimentary Rocks
• Igneous Rocks

Metamorphic Rocks are classified by

• Mineral Composition
• Texture (foliated / non foliated)
• Grain Sizes
• How they formed.

If a metamorphic rock has visible layers, planes or bands, it has this type of texture.

• Foliated
• Nonfoliated
• Coarse-Grained
• Fine-Grained

If a metamorphic rock does not have visible layers, planes or bands, it has this type of texture.

• Foliated
• Nonfoliated
• Coarse-Grained
• Fine-Grained

Identify the texture of this metamorphic rock.

• Foliated
• Nonfoliated

Identify the texture of this metamorphic rock.

• Foliated
• Nonfoliated

Identify the texture of this metamorphic rock.

• Foliated
• Nonfoliated

Identify the texture of this metamorphic rock.

• Foliated
• Nonfoliated

As you go further underground, what happens to temperature and pressure?

• Temp and pressure increase
• Temp decreases while pressure increases
• Temp and pressure decrease.
• Temp increases while pressure decreases