Fracking doesn't trigger quakes in Okla., USGS says

10/28/2013 | FuelFix.com

The frequency of earthquakes has increased in Oklahoma since 2009, but such seismic activity isn't triggered by hydraulic fracturing itself, according to the U.S. Geological Survey. "During the production from oil and gas activities, there's a lot of wastewater that's generated, and it is that reinjection into rock formations" that could cause some tremors, said Bill Leith with the USGS. Julia Bell, an Independent Petroleum Association of America spokeswoman, said that the connection between fracking and earthquakes has been overblown. "Experts have repeatedly asserted that the energy released from hydraulic fracturing is equivalent to a gallon of milk hitting the floor from a kitchen counter," she said.

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