Term
| What is the most abundant type of rock in earth's crust? |
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Definition
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Term
How are igneous rocks formed?
(2 steps) |
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Definition
| Molten rock cools and crystallizes |
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Term
| What is molten rock contained beneath Earth's surface called? |
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Definition
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Term
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Definition
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Term
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Definition
Larger crystals
Slower cooling time
Visible crystals
Also known as INTRUSIVE |
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Term
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Definition
Lava cools quickly
Smaller crystals
Also known as extrusive |
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Term
| What are the three most common igneous rocks? |
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Definition
| Mafic, Intermediate and Felsic |
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Term
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Definition
- Rich in Fe and Mg
- LOW IN SILICA
- MAN, GRAB ME SOME SALT
- MAFIC, GABBRO, BASALT
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Term
| What are intermediate rocks? |
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Definition
Rich in Fe, Al, Ca, and Na
intermediate silica
Andesite and diorite |
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Term
| Andesite and Diorite are major components of what? |
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Definition
| Continential arcs assoiciated with oceanic plates |
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Term
| What are the major components of oceanic crust? |
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Definition
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Term
| What are the major components of felsic rocks? |
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Definition
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Term
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Definition
High in Silica
Rick in K, Na, and Al
FUCK GRANITE RIGHT
Felsic, granite, rhyolite |
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Term
| What factors affect a rock's melting point? |
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Definition
1. Local heat and pressure conditions
2. The rock's water content
3. The composition of the parent rock that melts |
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Term
| What forms most of the mantle |
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Definition
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Term
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Definition
Contains less than 40% silica
Fe and Mg |
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Term
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Definition
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Term
| What forms divergent plate boundaries? |
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Definition
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Term
| What forms oceanic plates? |
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Definition
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Term
What type of lava is low in viscosity, has high temperatures, and is relatively low in silica?
It also erupts gently and quietly |
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Definition
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Term
| What lava is derived from magmas od intermediate temperatures, and is higher in temperature? |
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Definition
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Term
| What lava has high silica and low temperature and erupts most explosively? |
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Definition
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