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Unformatted text preview: Geology Page 1 Geology Page 2 Geology Page 3 Geology Page 4 Geology Page 5 Geology Page 6 Geology Page 7 Geology Page 8 Geology Page 9 Geology Page 10 Geology Page 11 Geology Page 12 Geology Page 13 The Rock Cycle: Metamorphic Rock-metamorphism (Greek term): to transform. No melting. Closed chemical system. (except volatiles such as H20 , changes of texture Closed chemical system: polymorphs (same chemical formula but different arrangements of the atom) Geology Page 14 Polymorphs of Al2Si05: Metamorphic Rocks: Ingredients of metamorphism: elevated temperature and elevated pressure, sheer stress, tiny amount of h20 Diagram: digenesis: makes sedimentary rocks. Styles of metamorphism: dynamic meta.- sheer stress predominant. Metamorphic foliation: Styles of metamorphism: Contact metamorphism (high temperature predominant) Regional: metamorphism through high temperature and high precipitation (shear stress) Common metamorphic Rocks: quartz sandstone ( quartzite), limestone (or dolomite) -marble, mudrock (complex) -slate (low-grade) schist (medium-grade) gneiss (high-grade) September 20 Tuesday Finish chapter 11, Next lecture chapter 12 Telling Geological Time (cont)...
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outline 1 - Geology Page 1 Geology Page 2 Geology Page 3...

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