Like that's hard... ;)
Lindy, ask somebody who actually knows something about science and piezoelectric phenomena how much electrical energy you would have to "deposit" in a geological fault hundreds of miles long to get a perceptible movement. Assuming there was some magical way to get the energy down to the fault without losing it along the way to pretty much any conductive material in the area.
Hint: a typical piezoelectric actuator that cycles about 40 microns with a force of up to 10,000 Newtons eats about 300 volts.