Recent earthquake surge puzzles residents of north-central Ark., some blame gas companies
Several small earthquakes ranging in magnitude from 1.8 to 3.5 have rattled the north-central Arkansas cities of Greenbrier and Guy this week, and the cause is unknown. The U.S. Geological Survey has reported 29 earthquakes in the area since Sunday, with 16 of them occurring Wednesday, two of which were magnitude 3.2 and 3.5. More than 700 quakes have occurred in the region over the past six months. Read more
A series of small earthquakes that rattled central Arkansas in recent weeks could be a sign of something much bigger to come. By this weekend, seismologists hope to install three measurement devices to gather data about future temblors in the area. That information could show whether the rumbles come from heat-related geological changes or from an undiscovered fault - which could mean a risk of substantial earthquakes in the future.