Geo_MetamorphicRocks

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Pace University *

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101

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Geology

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Dec 6, 2023

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pdf

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Uploaded by ProfBraveryTurtle32

©2016, eScience Labs Metamorphic Rocks EXERCISE 1 DATA SHEET Table 5. Metamorphic Rock Identification Rock Sample Foliated (Yes/No) Grain Size Other Textural Features Composition Rock Name Protolith M Yes Medium Crystalline, gneissic banding Feldspars, Gneiss Granite N No Medium crystalline Calcite/dolomit e Marble limestone O Yes Fine Slaty cleavage Biotite Slate Shale/mudst onen P Yes Coarse Metallic, shiny mica silica Schist Shale Q No Medium Geode-like shell, sandy Quartz Quartzite Sandstone R No Fine Vitreous/oily Carbon Anthracite Bituminous Coal

©2016, eScience Labs Metamorphic Rocks POST-LAB QUESTIONS 1. How did you determine the compositions of sample N and sample Q? While they both appeared to be made of mostly quartz, I was able to narrow down the rock identities due to their texture. Not only was N distinctly more crystalline and consistent, Q had a sandy textures the other rocks did not. 2. Where might you find a rock like sample M being formed on Earth today? 3. Sample R is highly desired in the energy industry because it is the most “clean” variety. Using your knowledge of metamorphic processes, how do you think this rock becomes so “clean” compared to its protolith? I imagine that it is more concentrated. The combination of heat, pressure, and time

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