Metamorphic Rock

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Metamorphic Rock

• Chapter 4 Section 4

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Metamorphic Rock

• Rock that has changed its form
• Change is caused by heat and pressure
• Changes can occur in the rocks
• - appearance
• - texture
• - crystal structure
• - mineral content

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Types of Metamorphic Rock

• Types are classified according to the arrangement
  of the grains

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Types of Metamorphic Rock

• Foliated contain layers or bands
• Rocks split along bands

Granite changes to Gneiss
Shale changes to Slate
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Types of Metamorphic Rock

• Nonfoliated mineral grains are random
• rocks do not split along bands

Sandstone changes to Quartzite
Limestone changes to Marble
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Uses

• Marble and Slate are the most useful
• Buildings
• Statues
• Walkways
• blackboards

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