Produced Water causes 5.1 Magnitude Earthquake in Oklahoma / by Tom Joseph

A 5.1 magnitude earthquake shook northwest Oklahoma and was felt in seven other states Saturday, the U.S. Geological Survey said, the third-strongest temblor ever recorded in the state where the power and frequency of earthquakes has dramatically increased in recent years.

The earthquake centered about 17 miles north of Fairview in northwestern Oklahoma occurred at 11:07 a.m. and was reportedly felt across Arkansas, Iowa, Kansas, Missouri, Nebraska, New Mexico and Texas, the USGS said.