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Va. earthquake is aftershock of major 2011 shake

An earthquake in Virginia confirmed by the U.S. Geological survey is the spawn of a massive quake that rocked the region about two years ago.

Tags: USGS, Nick Ianelli, washington monument

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2.1 magnitude earthquake hits in Maryland

The U.S. Geological Survey is reporting a minor earthquake shook eastern Frederick County near the Carroll County line, but area residents likely didn't even notice the minor quake Saturday morning.

Tags: USGS, earthquake

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USGS: Glut of quakes likely manmade, fracking possible cause

Last year saw a sharp rise in 3.0-magnitude quakes or stronger in the U.S. midcontinent, a continuing trend that prompted the U.S. Geological Survey -- the government's main source for Earth sciences -- to investigate the root cause.

Tags: USGS, fracking, earthquake, quake, Bill Ellsworth, David J. Hayes, Paul D. Shinkman

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