111-34 - GY 111 Lecture Notes D. Haywick (2008-09) 1 GY 111...

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GY 111 Lecture Notes D. Haywick (2008-09) 1 GY 111 Lecture Notes Metamorphism 5: Retrograde Metamorphism Lecture Goals : A) “Prograde” metamorphism B) “Retrograde” metamorphism Reference: Press et al., 2004, Chapter 9; Grotzinger et al., 2007, Chapter 6; GY 111 Lab manual Chapter 4 A) “Prograde” metamorphism Today will be a nice and easy day as we only have to deal with one more metamorphism-related topic. I won’t spend a lot of time on the first part of this since it’s pretty blatantly obvious stuff. The deeper you go, the higher the grade of metamorphism that you get. Rocks that get progressively deeper, get more metamorphosed. This is called prograding metamorphism and it results is slate being converted to phyllite and then into schist etc. The diagram to the right (from the 2004 edition of your text book) shows the “pathways” of prograding metamorphism that occur in nature. Well it stands to reason that if you can get an increase in metamorphism over time that
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This note was uploaded on 02/04/2012 for the course GLY 111 taught by Professor Haywick during the Fall '11 term at S. Alabama.

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111-34 - GY 111 Lecture Notes D. Haywick (2008-09) 1 GY 111...

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