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California Earthquake Pictures - Loma Prieta
October 17, 1989
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Summit Road area in the Santa Cruz Mountains. Northwest-trending extensional crack where dam fill settled about 0.6 meter (2 feet) and pulled away from the concrete spillway and north abutment of Austrian Dam.
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Lack of adequate shear walls on the garage level exacerbated damage to this structure at the corner of Beach and Divisadero in the Marina District.
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Highway 17 in the Santa Cruz Mountains. Broken concrete divider near the intersection of Summit Road and Highway 17.
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Watsonville area. Liquefaction in recent deposits of the Pajaro River formed sand volcanoes along a fissure 6 to 7 meters (19.7 to 23 feet) in length. The variation in grain size and the partial erosion of the conical deposits of sand show that the venting of the slurry of sand and water was a complex series of depositional and erosional events triggered by the main shock and renewed by principal aftershocks in some instances.
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Summit Road area in the Santa Cruz Mountains. A geologist traces surface cracks in a corral adjacent to Summit Road approximately 1.6 kilometers (1 mile) southeast of Highway 17.
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Watsonville area. Collapsed porch in downtown Watsonville.
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Redwood Grove in the Santa Cruz Mountains. Failure of its downslope support piers destroyed a house.
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Credits: All earthquake photographs courtesy of the U.S. Geological Survey.
Event Photographers:
Ellen, S.D.
Fisher, G.R.
Haugerud, R.A.
McLaughlin, R.J.
Nakata, J.K.
Plafker, G.
Note: YupRocks makes no copyright claims on these earthquake photographs - they are public domain and may be freely distributed. |
