2008 National Seismic Hazard Maps - Source Parameters

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Fault Name	State
Mount Irish Range fault	Nevada

GEOMETRY
Dip (degrees)	60/40/50
Dip direction	W
Sense of slip	normal
Rupture top (km)	0
Rupture bottom (km)	15
Rake (degrees)	-90
Length (km)	12

MODEL VALUES
Probability of activity	1
Minimum magnitude	n/a
Maximum magnitude	6.32
b-value	n/a

Assigned Dip	Fault-Parallel Slip Rate	Width	Annual Rate	a-value	Branch Weight
40	0.02	23.3	3.79e-05	n/a	0.2
50	0.01	19.6	2.67e-05	n/a	0.6
60	0.01	17.3	2.09e-05	n/a	0.2

Comments
This fault was included in 1996 based on preliminary data from dePolo (1996, written commun.). However, the slip rate subsequently assigned by dePolo (1998) was 0.01 mm/yr based on the presence of scarps on alluvium but the absence of basal fault facets. The published value is used herein.

Selected References
dePolo, C.M., 1998, A reconnaissance technique for estimating the slip rate of normal-slip faults in the Great Basin, and application to faults in Nevada, U.S.A.: Reno, University of Nevada, unpublished Ph.D. dissertation, 199 p.