1. Last lecture Historical behavior of San Andreas fault

2. We’ve looked at only a few of the interesting historical earthquakes!

3. Meade and Hager [2005] 34±3 mm/a 3,700 a 25±3 mm/a 5,900-14,500 a 16±3 mm/a 5,900-14,500 a

4. Lecture 21: The San Andreas fault Neotectonic overview (continued) Loma Prieta 1989 The San Gorgonio Pass jog

7. San Andreas fault

12. Uplift rates between 0.13 and 0.35 mm/a Nominal Loma Prieta earthquakes every 300-600 years 442 earthquakes to produce the 125,000-year terrace

13. San Gorgonio Pass stepover What are the actual kinematics?

14. The first step in answering this question is to understand the 3-D geometry of the fault system

15. What is happening in the San Bernardino Mountains?

25. Where are the active structures on the san Gorgonio Pass side of the San Bernardino mountains?

26. Active faults and topo of the region 1986 eq

27. Broad antiformal warps

43. Contours on base of seismicity