When I wanted to check out the geology of spreading and earthquake zones, I posted a question to a couple of geological Usenet groups in lieu of actual research. This netted me a lot of advice from people I've never met and probably never will: Ellin Beltz, Hayden Chasteen, Joe Davis, Keith Morrison, and Carl Schaefer gave me pointers and references on vulcanism, plate tectonics, and (in one case) the length of time it would take a nuclear submarine to get shot zit-like from the mouth of an active volcano after being swallowed into a deep-sea subduction zone. John Stockwell of the Center for Wave Phenomena (Colorado School of Mines) was especially forthcoming, sharing formulae and tables that described earthquakes in nice, graspable, "Hiroshima equivalents". I'm tempted to never do my own research again.
I'm also tempted to blame all these nice people for any technical mistakes you find in the following document, but of course, I can't. It's my book. I guess that means they're my mistakes too.