Fault lines in the Appalachian Mountains dating back hundreds of millions of years could be to blame for multiple earthquakes recently near a North Carolina town. A quake hit just north of west Canton on June 16 marking the eighth quake recorded in the same area since May 23, and U.S. Geological Survey officials say, although they’re not sure why, this means there’s an old fault line that’s now active. Geologists say they also don’t know if the “cluster” will continue or come to a sudden halt, adding they can occasionally become active when stress builds in spots where the rock is weak.
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