Bloomberg News
Brian Swint, ©2011
Wednesday, November 2, 2011
Gas Fracking Probably Caused Blackpool Earthquakes in U.K.
Quote:
Nov. 2 (Bloomberg) -- Two small earthquakes near Blackpool in northwest England
earlier this year were probably caused by hydraulic fracturing,
a technique of grinding underground rocks to extract natural gas.
It's "highly probable" that fracking, as the process is known,
at the Preese Hall-1 site caused the quakes, U.K.-based shale explorer
Cuadrilla Resources Ltd. said in a report published today.
The geological circumstances were "rare" and the strongest possible tremor,
of a magnitude of 3, wouldn't be a risk to safety or property on the surface, it said.
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The fracking company in this link plans ~ 400 wells in the area.
IIRC back in the 50's, liquid wastes pumped into the old wells lead to earthquakes near Denver.
About the same time, new dams and lakes in the West were shown (statistically) to be sources of earthquakes.