Hello Russell,

I think you're on to my thinking. I have provided a simple map of the region which shows the basic direction of deformation. The area I am intersted in is where the SAF changes from transform into a spreading zone in the Imperial Valley. What I found in the quake records were large quakes near the Mendocino Triple Junction and Northern Cal which are follwed by large quakes in the Imperial Valley. The most notorious was the San Fransico Great quake, which was followed by a strong quake near Imperial. Many of the large Mendocino incidents are followed within a year by a quake in Imperial. When a tranform section of a fault strains, how would a connected transform section react? And would such a region be more suseptable to reactivity? Those are the questions. If we have a strong quake in the Imperial Valley by summer, it would be one more to add to the list. Mendocino went last June 14. I do have to go over the numbers and dates again. Work in progress.

glen

• Farallon