Smith (1962) estimated about 40 miles of total left-lateral movement along the Garlock fault on the basis of an offset dike swarm. Hewett (1954) noted that the Mojave block may be divided by a line southwest of which northwest-trending faults are numerous and northeast of which they are not; the Blackwater fault coincides with this line. On the northern side of the Garlock fault, a similar line lies along the base of the Piute Mountains and between Cross Mountain and Cache Peak. These two lines are named the Blackwater and Piute lines. Distance between their points of intersection with the Garlock fault along the trace is 46 miles. This evidence supports Smith's postulated displacement; it is believed to provide another indication of the distance involved.

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