111-pp30 - 1 GY 111: Physical Geology GY 111: Physical...

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Unformatted text preview: 1 GY 111: Physical Geology GY 111: Physical Geology UNIVERSITY OF SOUTH ALABAMA Lecture 30: Mountain Building 1: Isostacy and Thrusting Lecture 30: Mountain Building 1: Isostacy and Thrusting Last time A) Metamorphic Facies B) Shock Metamorphism C) Retrograde Metamorphism Last bit about Metamorphism Metamorphic facies The Problem: Parent rock High Grade Metamorphic rock Shale Rhyolite (granite) Gneiss Granite The Solution: Consider conditions of Pressure and Temperature rather than parent rock composition Temperature Pressure Low High High P a r t i a l m e l t i n g Zeolite facies Hornfels facies Greenschist Amphibolite Granulite B l u e s c h i s t Eclogite facies slate phyllite phyllite sch ist gneiss gneiss Metamorphic facies Temperature Pressure Low High High P a r t i a l m e l t i n g B u r ia l c u r v e ( p r o g r a d e m e ta m o r p h is m ) Metamorphic facies Temperature Pressure Low High High P a r t i a l m e l t i n g Metamorphic facies R e tr o g r a d e m e ta m o r p h is m 2 Todays Agenda Mountain Building 1...
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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-pp30 - 1 GY 111: Physical Geology GY 111: Physical...

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