Getting old. I misremembered differently... Thanks,
Then I guess a 7.9 would really screw things up in LA
That's why I called it to your attention. Recall the damage done by the Sylmar or Northridge quakes. One reason is that LA is built of concrete made of colluvial deposition from the San Gabriel Mountains, much of it dug out in Irwindale. It's easy to dig out and process, but it's crappy granite.