3688956
Description
Mind Map by Rachel Thornton, updated more than 1 year ago
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Created by Rachel Thornton
almost 9 years ago
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Rocks
- Igenous-from molten rocks
- Plutonic rocks- from magma at depth (more crystallized)
- Volcanic rock- from lava at surface (fine-grained,
- Volcanic Glass- fast cooling at surface prevents crystals
- Volcanic Glass- fast cooling at surface prevents crystals
- Volcanic rock- from lava at surface (fine-grained,
- Plutonic rocks- from magma at depth (more crystallized)
- Sedimentary- from by deposition of Earth's sediment;
formed from mechanical break up of another rock
- Lithification- compacts sediments together
- Lithification- compacts sediments together
- Metamorphic- from heat/pressure
- Contact Metamorphism- heat from magma
chambers changes the adjacent rock
- Regional Metamorphism- heat/pressure
can affect rocks over big area
- Regional Metamorphism- heat/pressure
can affect rocks over big area
- Contact Metamorphism- heat from magma
chambers changes the adjacent rock
- Law of Superposition: theory that
strata at bottom are oldest
- Classifying Rocks:
- Grain size
- Coarse= gravel
- Medium= sand
- Fine=silt
- Very Fine= mud
- Very Fine= mud
- Fine=silt
- Medium= sand
- Coarse= gravel
- Grain shapes
- Angular
- Sub-Angular
- Sub-rounded
- Rounded
- Rounded
- Sub-rounded
- Sub-Angular
- Angular
- Better sorted and rounded rocks traveled further from the surface
- Grain size
- Rock Cycle:
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