Alberta earthquakes linked to gas fracking

“We can’t take things out of the earth and expect things not to move”:

In Fox Creek, Alberta, where industry triggered a 4.4 magnitude earthquake, a company fracking in the Duvernay Formation has reported more tremors.

“On May 28, an operator in the Fox Creek area reported two seismic events, of a magnitude 2.2 and 2.1 respectively,” confirmed Ryan Bartlett, a spokesperson for the Alberta Energy Regulator.

“The events were associated with hydraulic fracturing operations,” said Bartlett, “and were reported to the [regulator] as required by Subsurface Order #2,” a new set of regulations to monitor seismicity set up last February.

In addition, a shallow 3.5 magnitude earthquake occurred near Rocky Mountain House in central Alberta where a history of quick and high-volume gas extraction from the Strachan gas pool has triggered swarms of tremors since 1976.

More at The Tyee.

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