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Asteroids, Meteorites, Meteors

Giant Ancient Impact Crater Confirmed in Iowa

6 Mar , 2013 by David Dickinson

A monster lurks under northeastern Iowa. That monster is in the form of a giant buried basin, the result of a meteorite impact in central North America over 470 million years ago. A recent aerial survey conducted by the state of Minnesota Geological Survey and the United States Geological Survey (USGS) confirms the existence of […]

astronomy geology, decorah impact, iowa crater, Meteorites, north american impacts, russian meteor

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