USGS to map faults in Va. that caused 2011 quake

Published



LOUISA, Va. (AP) — Scientists with the U.S. Geological Survey plan to map underground faults in Virginia that caused last year’s earthquake.

The mapping will be done with a low-flying airplane carrying instruments that will measure gravitational and magnetic pull at different sites. The agency says it’s the first time that airborne gravity will be used as a tool in the U.S. to map a seismic hazard.

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