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ch06_metamorphic_online_notes(2)

ch06_metamorphic_online_notes(2) - Understanding Earth...

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Unformatted text preview: Understanding Earth Fifth Edition Chapter 6: Metamorphic Rocks Copyright © 2007 by W. H. Freeman & Company John Grotzinger, Thomas H. Jordan, Frank Press, Raymond Siever, Concepts you will need to know for the exams CHAPTER 6 • METAMORPHIC ROCKS • Controls on metamorphism by: P,T, fluids • Isotherm • Geothermal gradient • Confining pressure • Directed pressure • Regional metamorphism • Contact metamorphism • High-P metamorphism • Burial or low-grade metamorphism • Foliated texture • Crystal Growth • Pressure-Temperature Paths (pro-grade and retrograde metamorphism) Factors that control the type and and degree Metamorphism • Heat • Pressure • Fluids Temperature increases with depth A typical continental geothermal gradient is 30 degrees C per kilometer Where is the 1300 degree isotherm ?...
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ch06_metamorphic_online_notes(2) - Understanding Earth...

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