Photo Archives
 
Filters: Collection Name: "Environmental Geology in Utah"
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76 Landslide of bedrock onto highway; a frequent problem for highway maintenance, sometimes necessitating blasting of large bedrock blocks.Image
77 Landslide scarp behind house along mountain front in Weber County.Image
78 Landslide scarplet "getting closer to home" in mountain subdivision.Image
79 Landsliding of an abutment encroaching on the reservoir which is near its peak stage (elevation). Structures for impoundment of flood waters must be sited with strict regard for geological conditions.Image
80 Large scale landsliding during construction of Interstate 80 in Echo Canyon. Bedding plane slide.Image
81 Leakage through the undisturbed abutment of an earthfill dam, measured in a wooden weir.Image
82 Looking across a dam towards a massive ancient landslide. Recent highway construction has rejuvenated landsliding just below the spillway; note receding hillside under arrow.Image
83 Looking downstream from the crest of the same earthfill dam (p1274n026). Note urban area at mouth of canyon.Image
84 Low sun angle illumination, vertical aerial photograph of large ancient landslide in urban environment at mouth of Ogden Canyon.Image
85 Map of Bear Lake showing bottom contours of the lake and depth to bedrock beneath soft valley sediments. The delta-fan areas along the east shore are colored yellow to indicate another hazard. Response of the delta-fan soft sediments to earthquake vibrations is anticipated to be poor, almost certainly causing severe damage to structures built on these level areas. Different earth materials may be expected to behave differently when shaken in an earthquake. The closeness of the contours bounding the delta-fans indicates a steep front for each. Movement of material in an earthquake may be expected to occur towards these steep fronts.Image
86 Map of portion of the Wasatch Front showing the Wasatch Fault Zone in relation to the Salt Lake City aqueduct system (with water system facilities as projected into the 20th Century). Map illustrates severity of the earthquake problem in urban Utah.Image
87 Map of Utah showing the 5 major active fault zones in the state.Image
88 Monument to campers who lost their lives in cloudburst flood in Sheep Creek Canyon, in Flaming Gorge National Recreational Area, 1963. Note: boulder on which bronze monument has been placed is striated and polished by glacial action in the ice age.Image
89 Mud-flow debris cleared from residence after storm on Salt Lake City's East Bench.Image
90 Mud-flow which occurred in same season in which photo was taken, in Tooele County. Cloudburst probably descended on the background watershed in the Oquirrh Range.Image
91 Mud-rock flow from upper steep-walled tributary canyon into Echo Canyon (Summit County) and over Interstate 80. Note that one lane of traffic has been cleared of debris. Aerial photo July 1968.1968-07Image
92 Multistory apartment house sitting astride the East Bench Fault of the Wasatch Fault Zone in Salt Lake City.Image
93 Nose of sagebrush-covered debris pointing out into grassy valley, in Sanpete County. Debris deposit was a sharply defined mud-rock flow.Image
94 Ogden Standard Examiner newspaper photograph of mudslide encroaching into dining room.Image
95 The old drainage below the dam through the city is now the site of numerous houses. Severe destruction would result from the dam failure.Image
96 Party of people viewing large landslide mass. Slide plane (surface along which mass of earth moved) is evident in photo half way down the exposed wall, sloping towards the party.Image
97 Pavement of Big Cottonwood Canyon Road, east of Salt Lake City, torn up by cloudburst flood in August 1969.1969-08Image
98 Photograph of a relief map using oblique illumination to highlight the topography. Note the steep slope along the east shore of Bear Lake. This slope marks the active Bear Lake Fault bounding the lake on the east. The lake sits in a graben, a downdropping block of earth.Image
99 Weber Basin Job Corpsmen digging out mudslide debris from hillside house.Image
100 Well points (small diameter water wells) used to dewater a hillside in loose sand to stabilize it after cut was made for roadway.Image
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