Nah, the earthquake itself isn't going to move the ground in a fashion that will aid md'rs. HOWEVER : If an earthquake damages old-town buildings enough, they can be condemned and slated for teardown. And then presto : You might be in-line to get some old town demolition hunting when the tractors come in and start removing foundations, exposing under-bellies, etc...
This is what happened in CA after the 1989 Loma Prieta earthquake. (That no doubt SeabeeRon remembers ?) : Many old homes, and a handful of oldtown district buildings were damaged beyond repair. And so during 1990 and '91, we had lots of fun old town demo's and abandoned old yards to choose from