2008 National Seismic Hazard Maps

2008 National Seismic Hazard Maps-Fault parameters

New Search

Fault Name	State
Turner and Mill Creek faults	Oregon

GEOMETRY
Dip (degrees)	60
Dip direction	SE
Sense of slip	reverse
Rupture top (km)	0
Rupture bottom (km)	15
Rake (degrees)	90
Length (km)	20

MODEL VALUES
Probability of activity	1
Minimum magnitude	6.5
Maximum magnitude	6.59
b-value	0.8

Assigned Dip	Fault-Parallel Slip Rate	Width	Annual Rate	a-value
60	0.01	17.3	9.79e-06	0.294

Comments
The assigned vertical slip rate is based on 100 m of vertical offset (Graven, 1990; Yeats and others, 1996) of the Miocene Columbia River Basalts (14-16.5 Ma).

Selected References
Graven, E.P., 1990, Structure and tectonics of the southern Willamette Valley, Oregon: Oregon State University, unpublished M.S. thesis, 119 p., 10 pls. Yeats, R.S., Graven, E.P., Werner, K.S., Goldfinger, C., and Popowski, T.A., 1996, Tectonics of the Willamette Valley, Oregon, in Rogers, A.M., Walsh, T.J., Kockelman, W.J., and Priest, G.R., eds., Assessing earthquake hazards and reducing risk in the Pacific Northwest: U.S. Geological Survey Professional Paper 1560, v. 1, p. 183-222.

Selected References

Graven, E.P., 1990, Structure and tectonics of the southern Willamette Valley, Oregon: Oregon State University, unpublished M.S. thesis, 119 p., 10 pls.
Yeats, R.S., Graven, E.P., Werner, K.S., Goldfinger, C., and Popowski, T.A., 1996, Tectonics of the Willamette Valley, Oregon, in Rogers, A.M., Walsh, T.J., Kockelman, W.J., and Priest, G.R., eds., Assessing earthquake hazards and reducing risk in the Pacific Northwest: U.S. Geological Survey Professional Paper 1560, v. 1, p. 183-222.