In this Nov, 6, 2011 photo, Chad Devereaux examines bricks that fell from three sides of his in-laws home in Sparks, Okla., following two earthquakes that hit the area in less than 24 hours. A study published Thursday by the journal Science explains how just four wells forcing massive amounts of drilling wastewater into the ground are probably causing quakes in Oklahoma.
Suddenly, the good old days — you know, when Arkansas had only had about 900 earthquakes linked to the re-injection of fracking wastewater — seem almost nostalgic, as the number of quakes, the amount of damage, the number of states impacted, and the scientific studies keep growing.
Think Progress reported yesterday, July 7th, 2014:
More than 2,500 small earthquakes have hit Oklahoma in the past five years, and nearly all of them can be linked to the process of drilling for oil and gas, according to a recent study published in the journal Science.
The study, led by Cornell University geophysics professor Katie Keranen, is the latest of many scientific studies showing a probable connection between earthquakes and drilling-related activity across the country. Specifically, the quakes are linked not to the fuel extraction itself, but to a process called “wastewater injection,” in which companies take the leftover water used to frack wells and inject it deep into the ground.