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Stanford university Geophysicist Mark Zoback stated that the amount of energy released in a microseismic event, for which fracking equals, "is equivalent to the energy of a gallon of milk hitting the floor after falling off a kitchen counter." <ref>[http://dailycaller.com/2014/03/19/does-fracking-cause-earthquakes/#ixzz2xDCP4azl Does fracking cause earthquakes?, DailyCaller.com, march 19, 2014]</ref>
 
Stanford university Geophysicist Mark Zoback stated that the amount of energy released in a microseismic event, for which fracking equals, "is equivalent to the energy of a gallon of milk hitting the floor after falling off a kitchen counter." <ref>[http://dailycaller.com/2014/03/19/does-fracking-cause-earthquakes/#ixzz2xDCP4azl Does fracking cause earthquakes?, DailyCaller.com, march 19, 2014]</ref>
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There is some evidence that the pumping of waste water into shale formations, the process after oil and gas extraction, can cause tremors. The evidence is so far inconclusive but seismic readings suggest this might be the case. Waste water has been pumped deep underground for more than 50 years, long before fracking was invented.
    
== See also ==
 
== See also ==
Siteadmin, Check users, oversight, Administrators
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