Since these events seem so locally focused it would be good if we might see how many fracking permits have gone out per year and where they concentrate.
ie., my state Co last checked for the year 2010 gave out 1000+ permits showing as red dots concentrated in particular areas.

Not saying these aren't eq's or land upheavals, these do seem to give a loud report sound wave enough to snap off trees.

Also, littlemiss description of the small tree was unclear. when trees are small they require tri=wire stakes to remain upright and it sounds as though this one may have simply blown over.