[Occupymendocino] Oklahoma nearly doubles earthquake count of California

[Mark Safron]

Whereas California’s quakes are spread throughout the state, seismic activity in Oklahoma is concentrated in the central and northern part of the state — areas where oil and gas drilling, otherwise known as hydraulic fracturing or fracking, has increased in recent years. In Oklahoma as a whole, drilling doubled between 2009 and 2012.   
http://america.aljazeera.com/articles/2014/6/26/oklahoma-new-earthquakecapitaloflower48.html

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