7 Quakes Hit Oklahoma in Less Than a Day

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Oil Drilling Earthquakes
Computer screens displaying data of real-time monitoring of seismic activity throughout the state of Oklahoma are pictured at the Oklahoma Geological Survey at the University of Oklahoma in Norman, Okla., Thursday, June 26, 2014. Earthquakes that have shaken Oklahoma communities in recent months have damaged homes, alarmed residents and prompted lawmakers and regulators to investigate what's behind the temblors — and what can be done to stop them.Sue Ogrocki—AP
By Per Liljas

Oklahoma was rocked by seven small earthquakes in a span of about 14 hours over the weekend, the U.S. Geological Survey said.

Three quakes hit between Saturday evening and Sunday morning, centered in the areas of Guthrie, Jones and Langston, and ranging between 2.6 and 2.9 in magnitude. They followed four larger temblors earlier on Saturday, including one near Langston shortly after noon that clocked in at 4.3 on the Richter scale.

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