One of the most mind blowing geologic features in western North America, the Great Unconformity represents over two billion years of time between the crystalline basement rocks below and the beach sands above. Team up with geology professor Shawn Willsey as he explores this fantastic unconformity and the rocks on either side near Buffalo Bill Reservoir just west of Cody, Wyoming in Shoshone River canyon.

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Shawn Willsey
College of Southern Idaho
315 Falls Avenue
Twin Falls, ID 83303

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