Lecture6 - Minerals hydrate Ingredients 2 PRESSURE...

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Metamorphic rocks
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Metamorphic rocks
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Metamorphic rocks
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Metamorphic rocks
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Metamorphic rocks: rocks changed by: 1. heat 2. pressure 3. chemically active fluids
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Rocks will change: 1. new minerals appear at the expense of old  ones 2. rocks change texture and appearance
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                                Al 2 SiO 5       Al 2 SiO 5         Al 2 SiO 5 andalusite                kyanite                      sillimanite polymorphs (D. Tasa, AGI) Metamorphic minerals
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Polymorphs of Al 2 SiO 5 temperature pressure Each polymorph is stable in a restricted  range of T and P. andalusite kyanite sillimanite Fig. 9-2
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Ingredients: 1.HEAT ~150C ~650-1100C
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Metamorphic rock
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                                        Minerals dehydrate
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Unformatted text preview: Minerals hydrate Ingredients: 2. PRESSURE Ingredients: 3. FLUIDS Styles of metamorphism: 1. regional 2. dynamic 3. contact Styles 1. REGIONAL Styles 1.DYNAMIC Meteorite impacts Barringer Meteor Crater - Arizona Styles 1.DYNAMIC Faults Styles 3. CONTACT Heat from magma- can create a rock called hornfels Common metamorphic rocks quartz sandstone (SiO 2 ) quartzite (SiO 2 ) Common metamorphic rocks limestone (CaCO 3 ) marble (CaCO 3 ) Common metamorphic rocks mudrock (complex) schist (medium-grade) gneiss * (high-grade) * pronounced (“nice”) phyllite (lower-grade) slate (lowest-grade) Slate Phyllite Schist Gniess Common metamorphic rocks Lignite or peat Anthracite coal...
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Lecture6 - Minerals hydrate Ingredients 2 PRESSURE...

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