The U.S. and Oklahoma Geological Surveys said an increase in earthquakes in the state may be attributed to heightened oil and gas activity.
USGS said it examined the rate of increase in earthquakes in Oklahoma and found they weren't due to random fluctuations in seismic activity in that state.
The joint study found injecting wastewater underground can lead to pressure increases that may contribute to earthquakes.
"Much of this wastewater is a byproduct of oil and gas production and is routinely disposed of by injection into wells specifically designed and approved for this purpose," USGS said.
The waste may be tied to hydraulic fracturing, a controversial drilling practice dubbed fracking. The process is used to extract oil and gas from shale deposits and has lead to an accelerated production rate from North American reserves. Critics of the practice say it's too great of an environmental threat to embrace.
USGS and OGS said Monday the rate of earthquakes in the state have increased by about 50 percent since October 2013. Activity in general has increased since 2009 and a magnitude 5.6 earthquake recorded in 2011 was the largest ever recorded in Oklahoma.
TVNL Comment: ....and cigarette smoking MAY lead to death, so keep on smoking until that hapens. Keep on fracking until the big one destroys a major urban area. Then, maybe, something will be done to end this. Maybe. probably not even then.
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