This map comes from the Ph.D. thesis of dePolo (1998): A reconnaissance technique for estimating the slip rates of normal-slip faults in the Great Basin, and application to faults in Nevada, U.S.A. Different colors indicate different activity rates on the faults. Fault activity is measured by the average slip rate on the fault over long time intervals (e.g. 100,000 years). The fastest faults in the region have slip rates of about 1-2 mm/yr. Most faults are in the range of 0.1 mm/yr or less. The San Andreas fault in central California has a slip rate of about 37 mm/yr. In Nevada, none of the faults come close, but there are several hundred faults that are available to cause earthquakes.
