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6 Cards in this Set
- Front
- Back
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Metamorphic Rocks
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prexisting rocks undergo a change due to heat pressure or chemical reaction. Temperatures between 100-800 degrees celcius
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What are possible things that could happen
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heat & pressure incease w/ depth and crust breaks down minerals and flatten mineral grains- atoms rearrange forming lerant minerals
hot fluids with in the crust can cause a chemical reaction the fluids consist of Co2 and Carbon dioxide During metamorphism rocks texture, chemical and mineral composition may change |
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What are they classified by
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textures
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foliated
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rocks mineral crystals arranged in parralel layers or bands
slate forms from Shale |
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Unfoliated
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Marble a metamorphic rock called limestone mostly made of clacite. Def. do not have paralel lines or bands
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pluton
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large piece of intrusive rock that can form land masses such as a dome
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