05 SedRocks - SEDIMENTARY ROCKS Chapter 7 Types 1...

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SEDIMENTARY ROCKS Chapter 7 Types: 1. detrital (clastic, fragmental) 2. chemical (biogenic) 1. Detrital Sedimentary Rocks cementation of detritus (sediment) Weathering: rock sediment Erosion: transportation of sediment Deposition of sediment Diagenesis: sediment rock - burial & cementation 7.15a
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Ocean Continent UP R I V E R POORLY SORTED WELL SORTED Rounded Grains Medium Grained Coarse & Fine Grained Angular Grains Weathering Erosion Fine Grained 7.15b, 7.18
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Grain Size Classification (p. 179) Relative Size Sediment Rock coarse gravel conglomerate quartz (round grains) feldspar breccia rocks (angular grains) medium quartz sand sandstone (+ feldspar) arkose fine quartz silt siltstone very fine clays shale, mudstone clay minerals
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Sediment Rock Environment gravel conglomerate Nonmarine (land) (above sea level) quartz sand sandstone Nonmarine (+ feldspar) arkose Transitional (shoreline) quartz silt siltstone Nonmarine Transitional clays shale, mudstone Nonmarine clay minerals Transitional Marine (below sea level)
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p. 192 & 193
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2.
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