After a bit of a seismic hiatus, earthquakes returned full force to Oklahoma last week, reports KOTV.
Beginning Tuesday night, Oklahoma was pummeled by at least 11 different earthquakes of magnitude three or higher, according to the United States Geological Survey.
No major damage was reported.
As with past earthquakes in Oklahoma, these tumblers were associated with the disposal of wastewater produced by the hydraulic fracturing process, better known as “fracking.”
Since the earthquakes peaked a couple of years ago, seismic activity in Oklahoma has quieted, due in large part to regulations placed on where and how wastewater can be disposed of by fracking operations.
The Oklahoma Corporation Commission is looking into the quakes, and focusing their investigation on the Arbuckle disposal wells in the Edmond area.