From 9News.com (Laurie Cipriano and Brandon Rittiman):
Scientists are investigating whether a rare 3.4 magnitude earthquake near Greeley, Colorado this weekend may have been caused by the disposal of fracking fluid.
The quake was centered in an area of Weld County located near four underground injection sites, in which used fracking fluid is forced deep underground as a method of disposal…
“I think we have a good reason to suspect there may be a link,” said Shemin Ge, a hydrologist with the University of Colorado. “We’re still looking into it.”
Ge says there are several injection wells very close to the epicenter of the earthquake.
“One of them is relatively high volume,” Ge said.
Ge is part of a team of scientists that are responding to the Greeley quake by placing a series of seismometers in the area to get more detailed data.
A team from the University of Colorado at Boulder was sent out to scout locations for the measurement devices on Monday.