Lab Final - Geology Lab Final Review Lab 7: Sediment Rocks,...

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Geology Lab Final Review Lab 7: Sediment Rocks, Landslides, and Slope Stability Sedimentary rock: formed by lithification, grains put together. Sediments accumulate or crystals precipitate and form aqueous solutions, they form deposits or sedimentary units, consolidated units turn into sedimentary rocks. Texture determined by weathering, transportation, precipitation, and deposition Classification o Clastic: clasts come together, mature vs. immature, rounded/angular, well/poorly sorted o Non-clastic: limestone, effervesces, calcite, on the continental shelf Landslides o Natural Causes: 1) beds parallel to slope of hillside, 2) unstable soils and clays, underlying clays and metamorphic rocks, rainfall clays, vegetation o Anthropogenic influence: buildings, cut and fill, construction o Slopes fail if they are too steep or are unconsolidated o If there is too much water the rocks and sediments won’t stick together and hold Topographic profiles: o Gradient= change in elevation / total distance o X axis= distance. Y axis= elevation Angle of repose: the maximum angle of a slope before it fails o Angle of repose higher for damp sand than dry sand because water holds the
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This test prep was uploaded on 04/21/2008 for the course UNKNOWN 103 taught by Professor Fuqua during the Spring '08 term at CofC.

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Lab Final - Geology Lab Final Review Lab 7: Sediment Rocks,...

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