A narrow gravity minimum anomaly of amplitude 30 mgals. indicates that northern Owens Valley is a narrow fault-bounded trough or graben filled with Cenozoic clastic deposits to a depth of as much as 8000 ft. Seismic-refraction measurements support this conclusion. Aeromagnetic and gravity measurements define a small, dense, and magnetic body buried by the valley fill of northern Owens Valley.
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Pakiser et al. (1962) studied this question.