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Earthquake activity in Arkansas gaining national attention

March 5, 2011

The recent New York Times articles detailing the natural gas industry’s waste disposal issues comes to mind when word comes from Arkansas of more earthquake activity there.

Map of fault lines and injection wells possibly related to the Guy-Greenbrier earthquake swarm in Arkansas

Scott Ausbrooks, seismologist for the Arkansas Geological Survey said “scientists continue to study whether there may be a connection between the earthquakes and local injection wells, where the natural gas industry pumps waste water that can no longer be used by drillers for hydraulic fracturing.”

“The central Arkansas town of Greenbrier has been plagued for months by hundreds of small earthquakes, and after being woken up by the largest quake to hit the state in 35 years, residents said Monday they’re unsettled by the increasing severity and lack of warning.  It was the largest of more than 800 quakes to strike the area since September in what is now being called the Guy-Greenbrier earthquake swarm.”

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