I notice the 4 Corners area is stable, yet with all those gas wells and fracking there you would think it would be a whole lot of shaking going on, that is IF fracking caused earthquakes.
On the other hand, it looks like the Raton area, where there are no gas wells, is all shook up. Maybe it is all those old coal mines collapsing.
Fracking has been around since around 1947. If they had found a connection between EQs and hydraulic fracturing they would have noticed by now.