2008 National Seismic Hazard Maps

2008 National Seismic Hazard Maps-Fault parameters

New Search

Fault Name	State
Carson Range fault	Nevada

GEOMETRY
Dip (degrees)	60/40/50
Dip direction	E
Sense of slip	normal
Rupture top (km)	0
Rupture bottom (km)	15
Rake (degrees)	-90
Length (km)	53

MODEL VALUES
Probability of activity	0.25
Minimum magnitude	6.5
Maximum magnitude	7.08
b-value	0.8

Assigned Dip	Fault-Parallel Slip Rate	Width	Annual Rate	a-value	Branch Weight
40	3.11	23.3	2.48e-03	2.468	0.2
50	2.61	19.6	1.75e-03	2.315	0.6
60	2.31	17.3	1.37e-03	2.209	0.2

Comments
The assigned vertical slip rate is consistent with trenching data presented by Ramelli and others (1994). They determined that the recurrence interval between the last events was 0.6-1.72 k.y. The multiple-event scarp is 5-6 m high; thus, a slip rate of 2 mm/yr is reasonable. Dip of fault changed to 50? based on redefined regional default value (Lund, 2006).

Selected References
Ramelli, A.R., dePolo, C.M., and Bell, J.W., 1994, Synthesis of data and exploratory trenching along the northern Sierra Nevada fault zone: National Earthquake Hazards Reduction Program, Final Technical Report, 65 p., scale 1:100,000. 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, ugspub.nr.utah.gov/publications/open_file_reports/OFR-477.pdf.

Selected References

Ramelli, A.R., dePolo, C.M., and Bell, J.W., 1994, Synthesis of data and exploratory trenching along the northern Sierra Nevada fault zone: National Earthquake Hazards Reduction Program, Final Technical Report, 65 p., scale 1:100,000.
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, ugspub.nr.utah.gov/publications/open_file_reports/OFR-477.pdf.