USGS ties quakes to Oklahoma oil production
Reston, Va. (UPI) Oct 21, 2015 - An increase in seismic activity in Oklahoma since 2009 may be in part related to activity associated with oil production, the U.S. Geological Survey finds. "In Oklahoma, seismicity rates since 2009 far surpass previously observed rates at any time during the 20th century," Susan Hough, a USGS seismologist, said in a statement. "Several lines of evidence further suggest that most of the ... more
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