Topics

Geology
Quake map puts new attention on Oklahoma, fracking wastewater
Quake map puts new attention on Oklahoma, fracking wastewater

Even in an area that was becoming accustomed to earthquakes, a 5.6 temblor near Prague, Okla., in 2011 stood out. The shaking was strong enough to destroy 14 homes, cause a highway to buckle and slightly injure two people. The initial shaking from a foreshock was felt just about 200 yards from the spot where workers had been injecting wastewater deep underground for 18 years. As the water changed the pressure underground, it triggered a seismic reaction that was felt in at least 17 states. Oklahoma has experienced the most earthquakes thought to be triggered by human activity in the eastern and central United States, according to a new report from the U.S. Geological Survey. Last year,...

Loading