Glacial Diamictite (image) University of Wyoming Share Print E-Mail 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. Credit UW Photo Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.