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Preface to Washoe Valley area open file report
TEXT TO ACCOMPANY GEOLOGIC HAZARDS
TEXT TO ACCOMPANY FLOOD AND FLUVIAL DEBRIS HAZARDS
Explanation and use of unit descriptions
Unit descriptions of composition physical properties
alluvium andesite basin bedrock beds Bouguer anomaly boulders breccia canyon Carson Range clasts clay coated clayey fill clayey subsoil close to moderate coarse cobbles commonly Composition cross section debris flows depth earthquake Engineering characteristics estimated faults flood flow banding flow rock fracture permeability geologic map glacial moraine Glacial outwash granodiorite gravity ground surface hard blocks interbedded Kate Peak Formation lake deposits Largely unexpansive loose matrix metamorphic rocks moderate to high Mount Rose fan Nevada old alluvium Ophir Creek pebbles Physical properties Pleasant Valley poorly sorted Possible problems probably requires heavy ripping rhyolite ripping or blasting rockfall avalanches sandy clay shown significantly expansive silt silty sand Slide Mountain Steamboat Hills subsoil thick Thompson and White trenched with ease tuff U.S. Geological Survey unconsolidated deposits unit variably rocky Washoe City Washoe City quadrangle Washoe Lake Washoe Lake area Washoe Valley weathered wet debris flows