Sunday, April 8, 2012

Midwest quakes linked to oil and gas drilling

Midwest quakes linked to oil and gas drilling: The U.S. Geological Survey's national seismic hazard map indicates that many parts of the Central and Eastern United States have moderate to high long-term hazard, even though they have not experienced recent large quakes. The white circles indicate quakes of magnitude 6.5 or greater that have occurred since 1978.Oil and gas production may explain a sharp increase in small earthquakes in the nation's midsection, a new study from the U.S. Geological Survey suggests. Email this Article Add to Newsvine

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