Strong M4.7 Earthquake Rocks Oklahoma — Cherokee

earthquakes-in-oklahoma-2014

M4.7 - 8 miles SW of Cherokee, Oklahoma

In the early morning hours of Nov. 18th, Oklahomans were shaken by a 4.7 magnitude quake centered near the Great Salt Plains Lake, in North Central Oklahoma.
The USGS released the following info:

Earthquakes in the Stable Continental Region

 Induced Seismicity

As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth's crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included impoundment of water behind dams, injection of fluid into the earth's crust, extraction of fluid or gas, and removal of rock in mining or quarrying operations.
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