Fracking confirmed as cause of rare 'felt' earthquake in Ohio

http://www.eurekalert.org/pub_releases/2015-01/ssoa-fca123014.php

Public Release: 5-Jan-2015
Seismological Society of America

A new study links the March 2014 earthquakes in Poland Township, Ohio to hydraulic fracturing that activated a previously unknown fault. The induced seismic sequence included a rare felt earthquake of magnitude 3.0, according to research published online by the Bulletin of the Seismological Society of America (BSSA).

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