Highway 466 (now State Highway 58) settled from a few centimeters to more than 30 centimeters in places, and a large part of the highway was cracked and wrinkled. Fill areas in the mountainous region along U.S. East of Caliente, one large crack, about 1.5 meters at its widest point and more than 60 centimeters deep, was observed. The ground slumped cotton rows were offset more than 30 centimeters and pavement on one highway was crumpled for more than 300 meters. Southwest of Arvin, on the San Joaquin Valley floor, ground cracks traversed and split the concrete foundation of one house, causing partial collapse. The cracking along Bear Mountain indicated that the mountain itself moved upward and to the north. The somewhat flat, poorly consolidated alluvium in the valley was erratically cracked and recontoured. Many surface ruptures were observed along the lower slopes of Bear Mountain, in the White Wolf fault zone. At Owens Lake (about 160 kilometers from the epicenter), salt beds shifted, and brine lines were bent into S-shapes. There, the earthquake cracked reinforced-concrete tunnels having walls 46 cm thick it shortened the distance between portals of two tunnels about 2.5 meters and bent the rails into S-shaped curves. MM intensity XI was assigned to a small area on the Southern Pacific Railroad southeast of Bealville. It claimed 12 lives and caused property damage estimated at $60 million. Kern County Earthquake, 1952: This earthquake was the largest in the conterminous United States since the San Francisco shock of 1906. Kern County Earthquake - 7.3 - July 21, 1952
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