Indiana University geologist Michael Hamburger told Indianapolis television station WTHR that the temblor occurred in an area “that’s seismically very quiet.”
Rusty Baldwin of USGS agreed that it was unusual. He said there are no known fault lines in the area where the quake was centered.
Baldwin said two quakes had been reported within 60 miles of the epicenter in years past, including a 3.8 quake in 2004 and a 3.0 quake in 1990.
“They can happen pretty much anywhere” where stresses build up in the earth’s crust, he said.
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Sorry...I thought the Fortville was up in that area. I’ll shut up now. :-)