Percy,
Not that I don't appreciate your research/looking up GPS things in this area, but you could always search "seismic lines across plate boundaries"
There are actual raw data seismic lines across the Jaun De Fuca plate, some very good 3D seismic looking at the Pacific plate going under Japan, and some across the mid-Altantic Ridge.
The internet is not the best place to get geologic data unless you belong to one of the professional organizations.
I'll bet Architect-426 has never looked at this or even knows about it.
Hell, from what I can tell reading this thread, he doesn't even basically understand ASTM soil descritpions.
Not the first person I'd chose to build something for me.
No problem if you want to know what color to paint your kitchen, but if you actually want to build something I'd call a Civil Engineer.
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