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USGS map of Saturday, 9/12 earthquake
The U.S. Geological Survey recorded a magnitude 2.2 earthquake seven miles south of Louisa Saturday night.

The quake occurred at 9:38 p.m., about 39 miles northwest of Richmond. According to the USGS "Did You Feel It?" map, people reported feeling the quake more than 100 miles away.

Earlier this year, the USGS announced it had located a new fault zone in the aftermath of the Aug. 23, 2011 Virginia earthquake that rattled the entire East Coast.

The magnitude 5.8 temblor marked the first time that a fault zone in the eastern United States produced a magnitude 5 or higher earthquake "clearly delineated by aftershocks," according to the USGS report.

The newly-discovered fault lines have been named the "Quail" fault zone.