Oklahoma had 109 earthquakes measuring 3.0 or greater in 2013 — more than 5,000% above normal. There have already been more than 200 earthquakes this year, an Oklahoma Geological Survey seismologist says. The state has always had the potential for earthquakes; it has a complex underlying fault system. But scientists say the more likely cause of the recent increase is underground injection wells drilled by the oil and gas industry.
Posted on: Wed, 18 Jun 2014 07:57:14 +0000
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