Quake expert says dual quakes unrelated
Tuesday, August 23, 2011
GOLDEN, Colo. (AP) — The U.S. Geological Survey says the Virginia earthquake struck an area that historically is not seismically active — and that there's no connection with another rare quake that struck Colorado.
USGS geophysicist Daniel McNamara in Golden, Colo., said Tuesday's magnitude-5.9 quake that rattled much of the East Coast cannot be traced to a specific fault.
McNamara said the same applies to a magnitude-5.3 quake that struck southern Colorado late Monday. That area, too, has seen little seismic activity on such a large scale.
McNamara stressed there is no connection between the two quakes.
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