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Published byMildred West Modified over 8 years ago
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ROCK CYCLE
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Igneous - Crystallization Molten rock material cools = liquid to solid
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Intrusive – slow cool = long time for crystallization large crystals developed
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Extrusive – rapid cooling traps air creating large pores
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Sedimentary - Lithification Weather – break down – wind, water, ice, plants Erode – move – water, wind Deposit – drop off in low spot Compact – pile up Cement – minerals left when water evaporates
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Minerals from H 2 O
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Sedimentary rocks are classified by - parent material Detrital Rock sediments Organic Living matter Shells - Limestone Organic matter - Coal Chemical Mineral Deposits Rock salt – salt licks
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Detrital – classified by sediment size
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Metamorphic - Metamorphism Metamorphism – existing rocks changed by extreme pressure & some heat deep in Earth’s crust
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Metamorphic - types Foliated = layered Non -foliated + pressure
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