Roger,

That's not really what I said-for your figures on 3 quakes it is not clear whether there is a significant relationship for FFA-It looks like something is happening in certain cases, but it may be a weak affect. Also, I do not plan on doing anything with this-have only offered to help edit/suggest for something Roger and/or Lowell might do. I'd have to see more examples of your maps. I'm travelling and am in an intenet cafe...just spent the afternoon in a copper-lead mine that is considered here to be at the Permian-Triassic boundary-mine is now a museum, and is located 2 km or so from my wife's parents. Got samples for someone to look for evidence of impact (was greater mass extinction than K-T.....
Chris