A previously unknown fault in eastern Arkansas has been discovered by Haydar Al-Shukri, the director of the Arkansas Earthquake Center at the University of Arkansas at Little Rock. The fault is unrelated to the well-known New Madrid fault zone responsible for a series of quakes in 1811-12, but appears to pose as significant danger to the area. It is believed the fault has produced at least one magnitude 7 earthquake in the last 5,000 years. If such a quake occurred today it would have a devastating effect as it lies near a major natural gas pipeline.
See article from the Associated Press – Scientist: New fault could mean major Ark. temblor
The Physical Environment Links: Faulting