There is a nice map at the bottom that shows the known fault lines around Chiang mai.

http://geology.fullerton.edu/Faculty/brhod...%20Hi%20Res.pdf

It seems that the nearest faultlines are way up in the mountains. What kind of effect does the "bodyweight" of that huge amount of rockmaterial have on the consequences of a faultline shift - (or whatever those earthquake producing events are called)? In my ignorance I'd suspect a dampening effect - right/wrong?

Glad to see the Chiang Mai Basin has a huge drain downstreams. Wouldn't want to see that basin filled to the brim.

It seems that the nearest faultlines are way up in the mountains. What kind of effect does the "bodyweight" of that huge amount of rockmaterial have on the consequences of a faultline shift - (or whatever those earthquake producing events are called)? In my ignorance I'd suspect a dampening effect - right/wrong?

Glad to see the Chiang Mai Basin has a huge drain downstreams. Wouldn't want to see that basin filled to the brim.

It's interesting that the quake that caused the tsunami also caused the earths axis to wobble as

a result of the faultline shifting.

http://www.777news.com/sumatra_quake_rattl...arth_orbit.html

My daughter is a science teacher in San Antonio, Texas, which sits atop a massive aquifier that meets the water needs of two million people. The level in that underground reservoir, on the opposite side of the planet, moved up and down several meters!