ROCK vs MINERAL

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ROCK vs MINERAL

• Minerals are homogeneous, naturally occurring,
  inorganic solids.
• Rocks are made up of one or more minerals.

http//www.rocksandminerals.com/rockcycle.htm
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3 Types of Rocks

• Igneous - formed from cooling molten rock
• Sedimentary
• Accumulated sediments
• Moderate pressures
• Forms in layers
• Metamorphic - formed from older rock
• Heat pressure (at considerable depth)

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Rock Cycle
4
Earth Layers

• Inner Core
• Outer Core
• Mantle
• Crust

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Crustal Plates
6
Dynamic Earth
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Geologic Time

• Time scale
• Cenozoic now-66 million yrs.
• Mesozoic 66-245 million yrs.
• Paleozoic 245-545 million yrs.
• Precambrian gt 545 million yrs.