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Filters: Collection Name: "Environmental Geology in Utah" Format: "image/jpeg" Type: "Image" Collection: uum_map
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TitleCollection Number And NamePhoto Number
26 Leakage through the undisturbed abutment of an earthfill dam, measured in a wooden weir.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n026
27 Looking downstream from the crest of the same earthfill dam (p1274n026). Note urban area at mouth of canyon.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n027
28 The old drainage below the dam through the city is now the site of numerous houses. Severe destruction would result from the dam failure.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n028
29 Looking across a dam towards a massive ancient landslide. Recent highway construction has rejuvenated landsliding just below the spillway; note receding hillside under arrow.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n029
30 View along the highway traffic lanes and the dam abutment at the newly created cut slope.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n030
31 Same view showing notch in cut slope, the result of a failure onto the road soon after opening to traffic (p1274n030). Landsliding is predictable.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n031
32 Front end view of the slide (p1274n030).P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n032
33 Reservoir slopes failing just upstream from dam. A failure overtopping the road would cause turbidity in the drinking water for a large city since the intake is directly downstream and in line with the current.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n033
34 Blasting for an interstate highway in the immediate vicinity of a dam. Concrete railing of dam appears in lower right corner. Vibrations, whether natural (earthquake) or manmade, may damage structures on sensitive foundations.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n034
35 Excavation for a covered distribution reservoir is pointed out in the photo. Note that drainages have been truncated. Reservoir is in an urban area with considerable development downslope. Geologic materials comprising the site are unstable. Geologic faults are mapped bounding the site, and springs issue from excavation walls and floor.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n035
36 Failure of ground bordering on a covered distribution reservoir. Hammer provides scale on displacement scarp.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n036
37 Rockfall, American Fork Canyon, February 1970. Observer stands on one of the boulders of rockfall looking across at debris fan which was washed down when aquaduct was struck and severed on the mountain side. Note height at which tree in foreground was broken off by boulder.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n037
38 Erosion caused by release of water on severance of aquaduct in foreground. Timpanogas Cave National Monument Visitor Center lies at bottom of canyon.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n038
39 Landslide of bedrock onto highway; a frequent problem for highway maintenance, sometimes necessitating blasting of large bedrock blocks.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n039
40 Crack down the highway centerline, showing displacement. U.S. 6 near Colton.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n040
41 Large scale landsliding during construction of Interstate 80 in Echo Canyon. Bedding plane slide.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n041
42 Ancient landslides show up on maps with scales as small as one inch to the mile. Three such ancient slides are pointed out along the mountain front in Juab County. Note swath of anomalous contours leading down to lowermost slide, obviously the path of bedrock which failed.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n042
43 Aerial photograph showing same swath and slide as on topographic map. Arrow points to displaced mass from swath behind it in mountain range.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n043
44 Landslide in Empire Canyon, Park City, in altered bedrock. Mining of metallic ores occurs just up the canyon. Park City lies just down-canyon. Switchbacks on road to Brighton have been wiped out; A further failure two years later took away even more of the hillside and dammed the creek in the canyon. Oblique aerial view.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n044
45 Closer view of head and foot of Park City landslide. Note tilt blocks at head of slide.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n045
46 Incipient landslide failure on subdivision road. Note characteristic arcuate configuration of ground surface, also patching along crack.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n046
47 Dropping of street which crossed old landslide failure plane. Note break in slope towards distance in line with fresh scarplet across street. Utility pole is seated along the slide plane.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n047
48 Failure of undisturbed hillside bordering on Bear Lake (to left just off edge of road and photo). This hillside is particularly valuable as view property for resort development, yet is failing without any terrain modification by man.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n048
49 Landslide scarplet "getting closer to home" in mountain subdivision.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n049
50 Failure of front yard before completion of home construction in mountain subdivision.P1274 Environmental Geology and Geologic Hazards in Utah Photograph Collectionp1274n050
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