A Major Eocene Lake System in the Hinterland of the North American Cordillera Comes into Geochronologic Focus

Michael Elliot Smith1, Elizabeth J. Cassel2, Andrew Canada3, Brian Jicha4 and Brad S Singer4, (1)Northern Arizona University, Flagstaff, United States, (2)University of Idaho, Earth and Spatial Sciences, Moscow, United States, (3)University of Idaho, Moscow, ID, United States, (4)University of Wisconsin-Madison, Department of Geoscience, Madison, United States