Hey, somehow I missed this one. I saw it as a suggested post when I was reading part 1 of your new story.
I didn't realize that things got so complicated as the faults hit the southern border. For instance, I didn't actually know that Baja Mexico was moving northward. Do they have to check the boundaries every few years to re-mark what is the US and what is Mexico? Ha ha
I don't know that I'll increase my social standing by knowing some of this stuff, but it's still interesting to learn about. Let's hope that it's a long while before the big quakes actually happen.