U.S. Geological Survey confirms: Human activity caused 5.7 quake in Oklahoma

‘The United States Geological Survey (USGS) issued a press release yesterday indicating that the magnitude 5.7 earthquake that struck Prague, Oklahoma in 2011 was unintentionally human-induced.

The USGS claims that the magnitude 5.0 earthquake triggered by waste-water injection the previous day “trigger[ed] a cascade of earthquakes, including a larger one, [which] has important implications for reducing the seismic risk from waste-water injection.”

Injection wells are considered by some to be the most environmentally sound method of disposing of waste-water — which is a byproduct of both hydrofracking and conventional oil production — because they use the earth itself to both filter and contain the pollution.

The decade-long explosion of energy-producing facilities in the central United States has, according to a recent article in the journal Geology, led to an 11-fold increase in the number of earthquakes occurring in areas that are typically tectonically calm, including Arkansas, Texas, Ohio, and Colorado in the past four years alone…’ (The Raw Story).