Fracking: Earthquakes are triggered well beyond fluid injection zones

Using data from field experiments and computer modeling of ground faults, researchers have discovered that the practice of subsurface fluid injection used in 'fracking' and wastewater disposal for oil and gas exploration could cause significant, rapidly spreading earthquake activity beyond the fluid diffusion zone. The results account for the observation that the frequency of man-made earthquakes in some regions of the country surpass natural earthquake hotspots.

from Engineering News -- ScienceDaily http://bit.ly/2DMiGya