Small Earthquakes in Alberta Last Spring Caused by Fracking
An investigation by the Alberta Geological Survey has concluded that several small earthquakes in Alberta last spring was caused by fracking.
Hydraulic fracturing is a well stimulation technique in which rock is fractured by a pressurized liquid.
The process involves the high-pressure injection of 'fracking fluid' into a wellbore to create cracks in the deep-rock formations through which natural gas, petroleum, and brine will flow more freely.
The earthquakes were minor and did not cause any damage but they were felt by people in central sections of the province and knocked out power to some areas.