| New Search |
| Fault Name | State |
|---|---|
| Horse Haven Hills structure (NW trend) | Washington |
| GEOMETRY | |
| Dip (degrees) | 60 |
| Dip direction | W |
| Sense of slip | reverse |
| Rupture top (km) | 0 |
| Rupture bottom (km) | 15 |
| Rake (degrees) | 90 |
| Length (km) | 59 |
| MODEL VALUES | |
|---|---|
| Probability of activity | 1 |
| Minimum magnitude | 6.5 |
| Maximum magnitude | 7.14 |
| b-value | 0.8 |
| Assigned Dip | Fault-Parallel Slip Rate | Width | Annual Rate | a-value |
|---|---|---|---|---|
| 60 | 0.04 | 17.3 | 1.92e-05 | 0.423 |
| Comments |
|---|
| This feature was listed under Oregon in 1996, although the structure is entirely within Washington. The maximum, but lower-probability slip rate from Geomatrix Consultants, Inc. (1995) was assigned in 1996. The assigned 2002 slip rate is based on 323 m of vertical offset of a 10.5 Ma basalt (Geomatrix Consultants, Inc., 1995; 1996). |