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basalt
warmer means newer means less dense |
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| andesite (usually pophyritic) |
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| peridotite (partial melt), source of hotspots |
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| as pressure decreases, melting temp increases |
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| less dense than rock, will rise to surface |
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| pillow basalt formed from leakage underwater |
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| electrons floating in outer core |
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| liquid, made of iron nickle |
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| solid, made of iron nickle |
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| cause by collision margin |
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| incorporates lithic fragments |
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| fracture, clevage, crystal growth |
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| 2 step cooling process (andesite, subduction) |
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| strongest to weakest (covalent, ionic, van der waal) |
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| SiO4 (-4 net charge) in a lot of rocks |
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| Silicate Tetrahedron Bonds |
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| forms bonds with various cations, electrons |
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| less gas than jovian planets due to heat |
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| represents water incorporated during subduction |
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| varies because hotspots keep land undense, floating |
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| Zones densest to lightest |
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| Innercore, Outercore, Mantle, Oceanic Crust, Continental Crust |
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| material similar to solid earth (iron nickle and silica) |
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| asthenosphere, seismic waves slow |
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| subduction rate higher than creation (divergent) rate |
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| divergent, moving apart at different rates |
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| erupts more violently, creates steeper mountains, felsic |
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| found in anything divergent and hotspots |
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| rocks cooled underground/ phaneritic |
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| how magma and rock is classified |
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| lighter, Feldspar and Silica |
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| darker, Iron and Magnesium |
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| (hematite) important streak |
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