Seismic Source Type
| Seismic Source Type | Seismic Source Description | Seismic Source Definition | |
| Maximum Moment Magnitude, M | Slip Rate, SR (mm/year) | ||
| A | Faults that are capable of producing large magnitude events and that have a high rate of seismic activity | M ≥ 7.0 | SR ≥ 5 |
| B | All faults other than Type A and C | M ≥ 7.0 M < 7.0 M ≥ 6.5 |
SR < 5 SR > 2 SR < 2 |
| C | Faults that are not capable of producing large magnitude earthquakes and that have a relatively low rate of seismic activity | M < 6.5 | SR ≤ 2 |