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The contiguous bedrock on the east coast allows energy to pass more efficiently and travel farther. That is why the earthquake on Tuesday was felt over such a broad geographic range. (USGS)

Q and A: Smithsonian's Elizabeth Cottrell on the Virginia Earthquake

A Smithsonian geologist offers her expertise on the seismic event that shook much of the mid-Atlantic this week

I don’t think that will be an outcome. We are very well instrumented already in the United States for that. This was recorded by lots of modern seismographs.

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