Beginning in 2009, the frequency of earthquakes in the U.S. State of Oklahoma rapidly increased from an average of less than two 3.0+ Mw earthquakes per year to hundreds in 2014 and 2015. Thousands of earthquakes have occurred in Oklahoma and surrounding areas in southern Kansas and North Texas since 2009.[7] Scientific studies attribute the rise in earthquakes to the disposal of salt water produced during oil extraction that has been injected more deeply into the ground.[8][9]
85
In this thread:
O/T - 5.6 in OK, ties record for state - cypresstx, 9/3/2016, 9:27 am