2008 National Seismic Hazard Maps - Fault Parameters

2007 National Seismic Hazard Maps-Fault parameters
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Fault Name State
Black Mesa fault zone New Mexico
MODEL VALUES
Slip rate (vertical or horizontal in mm/yr) 0.02
Probability of activity 1
Minimum magnitude 6.5
Maximum magnitude 6.54
FAULT GEOMETRY
Dip (degrees) 50/60/40
Dip direction NW
Sense of slip normal
Rupture top (km) 0
Rupture bottom (km) 15
Rake (degrees) -90
Length (km) 18
Assigned Dip Fault Parallel Slip Rate Width Characteristic Magnitude Characteristic Rate Weight
40 0.03 23.3 6.54 5.42E-05 0.2
50 0.03 19.6 6.54 3.81E-05 0.6
60 0.02 17.3 6.54 2.98E-05 0.2
Comments
Preferred vertical slip rate from Wong and others (1995), which is based, by analogy, on the lack of documented late Quaternary displacement. Dip of fault changed to 50° based on redefined regional default value (Lund, 2006).
Selected References
Wong, I., Kelson, K., Olig, S., Kolbe, T., Hemphill-Haley, M., Bott, J., Green, R., Kanakari, H., Sawyer, J., Silva, W., Stark, C., Haraden, C., Fenton, C., Unruh, J., Gardner, J., Reneau, S., and House, L., 1995, Seismic hazards evaluation of the Los Alamos National Laboratory: Technical report to Los Alamos National Laboratory, Las Alamos, New Mexico, February 24, 1995, 3 volumes, 12 pls., 16 appen.
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.