Can’t stand the pressure METAMORPHIC ROCKS Can’t stand the pressure

How are metamorphic rocks formed? Rocks formed from heat and pressure in the earth. Rocks do not melt! Any rock can become metamorphic. There are crystals

Animation of Metamorphic Rock Formation

What do metamorphic rocks look like? Foliation = mineral patterns in rock Mineral Alignment- Crystals aligned (same color) Banding is layers of minerals (different colors) Mineral alignment banding

What do metamorphic rocks look like? Nonfoliated = no visible mineral pattern Quartzite anthracite

Metamorphism Contact metamorphism = change in rocks next to magma or lava that is near the surface.

How are metamorphic rocks formed? Regional metamorphism = change in rocks over large area from deep in the earth.

How are metamorphic rocks formed? Heat and Pressure change parent rocks into new rock Shale

What are metamorphic rocks used for? marble slate Anthracite coal quartzite

Classification (Identification) Crystals (yes) Foliation (yes or no) Crystal size (large, medium or small)

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