re: #107 Teukka
Yeah, like, it would be if some supervillain would cause one of the largest faults in the world to unzip all at once. Or a KT Killer sized meteor impact.
In one Stack Overflow (or its seismology equivalent, I forget the specific name of the community) thread I read on the subject, the K-T impactor was estimated to have caused a magnitude 13 equivalent event. Just for a sense of scale.