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| Figure 1.1: Ground rupture along the northern trace of the Imperial Fault in southern California after the October 15, 1979 magnitude 6.5 earthquake. View is to the southwest acrosss the rupture. The strike and dip components of slip are identified based on the offsets of the small stream channels. The relative motion is right-lateral strike slip (~5cm) and dip slip (~20cm) down to the northeast. Observor is Paul Segall (Stanford University). Photograph by D. D. Pollard. | ||||
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