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Loma Prieta, California, Earthquake October 17, 1989. Extension cracks in the Marina District of San Francisco formed by the lateral spreading of a liquefied sandy landfill. Figure 25, U.S. Geological Survey Circular 1045.
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Peru Earthquake May 31, 1970. Site of the Yungay plaza showing the remains of the cathedral walls and four palm trees buried to a depth of 5 meters. The ridge that was overtopped by the Yungay debris lobe is visible in the distance. The wreckage in the right middle ground consists of a smashed bus and truck. June-July 1970.
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Peru Earthquake May 31, 1970. Nevados Hascaran, showing the area overrun by the upper part of the debris avalanche (outlined by dashed line): Moraines, M, below Glacier 511 and between Rio Shacsha and Quebrada Armapampa, and areas splattered by airborn mud and boulders. June-July 1970.
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Loma Prieta, California, Earthquake October 17, 1989. Crack system near Summit Road, half a mile southwest of Highway 17. View is northwest. A wide zone of dominantly extensional cracks passes several feet in front of the house. Figure 10-A, U.S. Geological Survey Circular 1045.
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Peru Earthquake May 31, 1970. Damage from the flood wave at the power company camp near Huallanca, which is visible in background. The wave, 20 meters deep at this point, swept away homes that formerly covered the level area in this view and deposited a layer of mud and rocks. The fence posts in the foreground are bent in the direction of the flow. June-July 1970.
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Loma Prieta, California, Earthquake October 17, 1989. Structures damaged in the Marina District of San Franciso. Damage due to ground failure of liquefied fill. Figure 24A, U.S. Geological Survey Circular 1045.
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Loma Prieta, California, Earthquake October 17, 1989. Crack system near Summit Road, half a mile southwest of Highway 17. View is southeast toward a house showing the driveway dropped down relative to the garage. Figure 10-B, U.S. Geological Survey Circular 1045.
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Peru Earthquake May 31, 1970. Field west of the Rio Shacsha that was pockmarked by boulders hurled cross the Rio Shacsha valley. Most of the rocks are projectiles derived from the Huascaran debris avalanche. June-July 1970.
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Peru Earthquake May 31, 1970. Flooding of a residential area in southeastern Chimbote where the ground settled substantially because of compaction of water- saturated sediments. 1971.
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Loma Prieta, California, Earthquake October 17, 1989. Sand boils formed by liquefaction in the Marina District of San Francisco. Figure 26, U.S. Geological Survey Circular 1045.
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Peru Earthquake May 31, 1970. Subsidence of a roadway fill adjacent to the iron ore unloading dock in Chimbote. The fill settled into the weak underlying sediments approximately 1.2 meters at this locality. The dock, which rests on piles driven through the unconsolidated surficial deposits, did not subside. June-July 1970.
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Loma Prieta, California, Earthquake October 17, 1989. Scarps and cracks associated with the movement of deep-seated slumps. Scarp at the head of a block slide in a residential area of Brookdale in the Santa Cruz Mountains. The block slide moved approximately 1.5 feet downslope (to the right). Part of the house to the left of the scarp remained on undisturbed ground while the part to the right moved downslope on a slide block. Figure 22, U.S. Geological Survey Circular 1045.
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Loma Prieta, California, Earthquake October 17, 1989. Larger of the two cracks that broke Morrill Road by left-lateral motion in both the 1906 San Francisco earthquake and 1989 Loma Prieta earthquake. The view of present-day Morrill Road is similar to 1906 view after the asphalt road had been patched, showing left-lateral displacement of the edge of the road. October 1989. Figure 13-C, U.S. Geological Survey Circular 1045.
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Peru Earthquake May 31, 1970. Part of a fishmeal plant at the Port of Casma that was severely cracked as a result of lateral spreading of the underlying unconsolidated sediments and fill. Note the extension effect on the concrete floor slabs. June-July 1970.
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Loma Prieta, California, Earthquake October 17, 1989. Sand boils at Oakland International Airport. Figure 28, U.S. Geological Survey Circular 1045.
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Loma Prieta, California, Earthquake October 17, 1989. Collapsed Cypress viaduct of Interstate 880 in Oakland. The second deck collapsed onto the first deck. Figure 30A, U.S. Geological Survey Circular 1045.
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Loma Prieta, California, Earthquake October 17, 1989. Sand boils in irrigated fields near Hollister. Figure 29, U.S. Geological Survey Circular 1045.
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Album caption: Map showing the relation of segments of the Motagua and Mixco faults that moved during the earthquake of February 4, 1976 (in red) to the main shock epicenter, the larger aftershock epicenters, and major structural and volcanic features in northern Central America. Circled numbers along the Motagua fault indicate selected measured sinistral displacements in centimeters. The green lines in the western part of the map area are lineaments, some of which may have undergone minor fault displacement during the earthquake. Guatemala Earthquake 1976. Figures drafted by Susan Hunt. Photo by G. Plafker. Published as slide 1 in the U.S. Geological Survey Open-File Report 77-165. No index card.
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Album caption: Wreckage of the J.C. Penney's Department Store at Fifth Avenue and D Street. Building failed after sustained seismic shaking. Most of rubble has been cleared from the streets. Anchorage, Anchorage District, Cook Inlet Region, Alaska, 1964. (Photo by George Plafker). Published as Figure 5 in U.S. Geological Survey. Professional Paper 542-A. 1965.
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Peru Earthquake May 31, 1970. Block of granodiorite estimated to weigh about 7,000 metric tons that was transported by the Huascaran debris avalanche and deposited near the Rio Santa west of Ranrahirca. The top of the block is covered with boulders that were deposited from the debris flow after the block came to rest. This block was left exposed after the enclosing mud flowed and/or was washed away after the avalanche. The pole at the base of the block is 4 meters high. June-July 1970.
map background search result map search result map Wreckage of J.C. Penney Department Store at Fifth Avenue and D Street, Anchorage District, Cook Inlet Region, Alaska, 1964. Map showing the relation of segments of the Motagua and Mixco faults that moved during the Guatemala Earthquake, Guatemala. 1976. Nevados Hascaran avalanche showing the area overrun by the upper part of the debris avalanche (outlined by dashed line) caused by the Peru Earthquake. 1970. Wreckage of J.C. Penney Department Store at Fifth Avenue and D Street, Anchorage District, Cook Inlet Region, Alaska, 1964. Map showing the relation of segments of the Motagua and Mixco faults that moved during the Guatemala Earthquake, Guatemala. 1976. Nevados Hascaran avalanche showing the area overrun by the upper part of the debris avalanche (outlined by dashed line) caused by the Peru Earthquake. 1970.