Glacial Diamictite (IMAGE)
Caption
Kevin Chamberlain, a University of Wyoming professor of geology, points to a glacial diamictite exposed in the Snowy Range of Wyoming. Chamberlain is the second author of a PNAS paper that determined a "Snowball Earth" event actually took place 100 million years earlier than previously projected, and a rise in the planet's oxidation resulted from a number of different continents -- including what is now Wyoming -- that were once connected. The inset photo was taken by Arthur Snoke.
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UW Photo
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