2008 National Seismic Hazard Maps - Fault Parameters

2007 National Seismic Hazard Maps-Fault parameters
New Search
Fault Name State
Bonham Ranch fault zone Nevada
MODEL VALUES
Slip rate (vertical or horizontal in mm/yr) 0.2
Probability of activity 1
Minimum magnitude 6.5
Maximum magnitude 7.11
FAULT GEOMETRY
Dip (degrees) 40/60/50
Dip direction E
Sense of slip normal
Rupture top (km) 0
Rupture bottom (km) 15
Rake (degrees) -90
Length (km) 56
Assigned Dip Fault Parallel Slip Rate Width Characteristic Magnitude Characteristic Rate Weight
40 0.31 23.3 7.11 2.36E-04 0.2
50 0.26 19.6 7.11 1.66E-04 0.6
60 0.23 17.3 7.11 1.30E-04 0.2
Comments
Weick (1990) estimated a maximum Holocene vertical slip rate of about 0.7 mm/yr from 3.5 m (multiple events) of vertical separation of sediment estimated to be about 5 ka. However, the maximum age of the deposits is not convincingly demonstrated and may be as old as 12 ka. Dip of fault changed to 50° based on redefined regional default value (Lund, 2006).
Selected References
Weick, R.J., 1990, Structural, tectonic and Quaternary study of the eastern Madeline Plains, California and southwestern Smoke Creek Desert, Nevada: Reno, University of Nevada, unpublished M.S. thesis, 160 p.
Lund, W.R., ed., 2006, Basin and Range Province Earthquake Working Group seismic-hazard recommendations to the U.S. Geological Survey National Seismic Hazard Mapping Program: Utah Geological Survey Open-File Report 477, 23 p.