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| basaltic(fine), gabro(course), high melting point, low viscosity, shield volcanoes |
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| granitic(course), rhyolite(fine), high viscosity, low melting point, composite volcano |
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Definition
| magma enters through old country rock |
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Definition
| any rock that was older than/intruded by igneous body |
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Definition
| upward movement of magma, fracturing of rocks above |
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Definition
| inclusion of unmelted country rock in igneous rock |
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Definition
| melting and mixing of igneous rock |
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Definition
| a 'blob' of material that is less dense than solid material |
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| 2 factors make magma rise: |
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Definition
buoyancy - expands less dense
melting - |
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| viscosity 2 things(def & controlled by) |
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Definition
| resistance to flow, temperature, composition |
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| igneous rock formed by cooling at great depths |
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Definition
| drastic temperature change |
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Definition
| moved quickly, fine grained rocks |
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Definition
| course grained, plenty of time to form intricately |
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| large crystals (long time) inclosed in fine grained crystals |
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Definition
| water in cracks, busts rock |
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Definition
| reduction of pressure on surface, rocks burst through |
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| large body of igneous rock |
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| unifying theme of geology |
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| everything on earth caused by shortlived events, hurricane, earthquake etc. |
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Definition
| everything on earth caused by normal every day processes. |
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Definition
| ferns, found in temperate climates |
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Definition
| feldspar, silicates, mica |
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Term
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Definition
| SiO4 tetrahedron, mainly Mg and Fe |
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Definition
| single building block chains, AUGITE |
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| double chain tetrahedra, hornblende, CONTAIN OH GROUP!!! |
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| different shapes of same chemical |
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Definition
| olivine, pyroxene, amphibole, biotite, muscovite |
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| carbonates, limestone = hokiestone |
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| basalt makes up what kind of crust |
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Definition
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| granite makes up what kind of crust |
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Definition
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