2008 National Seismic Hazard Maps - Fault Parameters

2007 National Seismic Hazard Maps-Fault parameters

Fault Name	State
Battle Rock fault zone	Oregon

MODEL VALUES
Slip rate (vertical or horizontal in mm/yr)	0.1
Probability of activity	1

Minimum magnitude	6.5
Maximum magnitude	7

FAULT GEOMETRY
Dip (degrees)	50
Dip direction	NE
Sense of slip	normal
Rupture top (km)	0
Rupture bottom (km)	15
Rake (degrees)	-90
Length (km)	45

Assigned Dip	Fault Parallel Slip Rate	Width	Characteristic Magnitude	Characteristic Rate	Weight
50	0.13	19.6	7	9.73E-05	0.6

Comments




Assigned slip rate besed on measured 20 m of offset across the less than or equal to 200 Indian Creek marine terrace surface (Kelsey, 1990). Dip of fault changed to 50° based on redefined regional default value (Lund, 2006).
Selected References




Kelsey, H.M., 1990, Late Quaternary deformation of marine terraces on the Cascadia subduction zone near Cape Blanco, Oregon: Tectonics, v. 9, no. 5, p. 983-1014. 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.