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SIR-B and aeromagnetic lineaments show a correlation with known faults within the Walker Lane of the western Basin and Range Province. Walker Lane faults can be extended based on SI R-B data and unmapped Walker Lane features arc identified. South of the Pancake Range lineament, Walker Lane faults arc seldom recognized but SIR-B data have the potential for delineating structural features in this area. Earthquake hypocentre distribution in profiles across a SIR-B lineament is consistent with that expected from a vertical fault. Field examination indicates that the lineament is an unmapped neotectonic Walker Lane feature.

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