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geology_9-1 - Chapter 3 Minerals and Rocks Rocks and...

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Chapter 3: Minerals and Rocks Rocks and environment: Inappropriate use for construction materials Fossil fuel exploration and extraction from rocks Reservoir rocks for fuels, groundwater, as well as contaminants Rock foliation and strength: Site stability for large facilities (nuclear power plant, dams, airports, etc.) Rock structure: Deformation in response to stress Brittle deformation : Fractures, joints, and faults Conduits for fluids, possibly pollutants Weak surfaces for landslide, earthquake, and failures of infrastructure Ductile deformation : Folds Mountainous terrain Related to active plate boundaries, linked to environmental problems Rock structure (2) Unconformity : Contact structure of rocks Representing geologic time gap in geologic records, ancient erosion surface Types: Nonconformity, angular unconformity, and disconformity Clues for ancient geologic environment Ore-bearing unconformity surface, e.g., uranium ore
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