6_Metamorphic rocks - GEO 303, Lecture 6 Metamorphic Rocks...

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Unformatted text preview: GEO 303, Lecture 6 Metamorphic Rocks Chapter 9 Next lecture : Ch 11 Isotopic ages with Dr. Long In lab : week of 2/7, Ch 6, igneous rocks Coming up : Quiz 1 in class T 2/22, W 2/23 February 3 rd and 7 th , 2011 Metamorphic Rocks Sedimentary rocks, continued What is metamorphism? Ingredients of metamorphism Styles of metamorphism Classifying metamorphic rocks Recycled Rocks, continued Recycled Rocks, continued (Figure 4-1) (Figure 4-1) Figure 4.1- The Rock Cycle Dissolved weathering products are ions in solution. Precipitated by chemical reactions. Form by inorganic precipitation at or near place of deposition. Evaporite Minerals: Ex. Halite, Gypsum, Calcite, Dolomite Ex. Rock Halite, Rock Gypsum, Dolostone Chemical Sedimentary Rocks Chemical Sedimentary Rocks Chemical Sediments Chemical Sediments Calcite (CaCO 3 ) Halite NaCl Gysum (CaSO 4 .2H 2 O) Solubility Biochemical sediments : undissolved remains of organisms and minerals precipitated by biological processes. Minerals: Calcite, Quartz Ex. Limestone, Chert, Coal Bioclastic sediments : broken fragments of biologically precipitated particles Biochemical Sediments Biochemical Sediments DEPOSITIONAL ENVIRONMENTS DEPOSITIONAL ENVIRONMENTS Geographic location and plate tectonic setting Transport agent and medium Organic processes and organisms that modify sediments Climate Sedimentary environment Sediments deposited Lake 1 Desert Lake 3 Glacier 4 Rivers 2 Desert Turbidity currents Delta 5 Beach 6 Tidal Flat 7 Deep sea 8 C o n tin e n ta l s h e lf 9 Organic reef 10 Continental margin/slope 11 Depositional environments Depositional environments Desert dune field: Cross-bedded sandstone Depositional environments Depositional environments Tidal Flat- Ripples Depositional environments Depositional environments Burrowed soil horizon Transformed Rocks Transformed Rocks (Figure 4-1) (Figure 4-1) Figure 4.1- The Rock Cycle...
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This note was uploaded on 03/20/2011 for the course GEO 303 taught by Professor Leon during the Spring '08 term at University of Texas at Austin.

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6_Metamorphic rocks - GEO 303, Lecture 6 Metamorphic Rocks...

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