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Lecture 3: Rock Cycle & PAS (Metamorphic Rocks)
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- 1Metamorphic RockForms from change of preexisting rocks at great temperature and pressure without complete melting
i.e - Diamonds???*
- Causes recrystallization of rocks
- Classified based on type of parent rock and GRADE = (temp. and pressure levels of metamorphism) - 2FoliationAlignment of platy minerals caused by applied pressures
- 3Coal- Derived from plant debris
- Lower grades of coal are considered sedimentary
- Higher grades of coal are considered LOW -GRADE metamorphic products
- 10m of plant debris = 1 m. of coal - 4Major Types of Metamorphism 1. Dynamic M. 2. Contact M. 3. Regional M. 4. Burial M1. alteration due to pressure and faulting
2. intrusion 'bakes' surrounding rocks
3. transforms deeply buried rocks over great distances
4. rocks buried very deeply --> exposed to temperatures and pressures high enough to change chemical metamorphism
i.e. - Diamonds???*
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- University Biology 211 Flashcards on Lecture 3: Rock Cycle & PAS (Metamorphic Rocks), created by Shazeen Karim on 05/12/2015.
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- Shazeen Karim
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