Saturday, November 10, 2012

M4.3 Kentucky earthquake

This is along a NE trend, so it is definitely on a mega-thrust.  That whole area has been interesting since it has produced a lot of little earthquakes, and no big ones.  It probably doesn't have the water, but then again, why so many earthquakes?  This is in the middle of nowhere, probably coal country, so perhaps they are trying injection for coal seam gas.

Update:  This is near to a big purchase of wastewater injection wells, so I'm fairly confident that this is injection.  That's unusual, since most injection into the mega-thrusts has stopped.

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