Preliminary Cosmogenic Surface Exposure Ages on Laurentide Ice-sheet Retreat and Opening of the Eastern Lake Agassiz Outlets

David Leydet1, Anders E Carlson2, Gaylen Sinclair2, James T Teller3, Andrew J. Breckenridge4, Marc W Caffee5 and Aaron M Barth2, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (2)Oregon State University, Corvallis, OR, United States, (3)University of Manitoba, Winnipeg, MB, Canada, (4)University of Wisconsin - Superior, Superior, WI, United States, (5)Purdue University, Department of Physics and Astronomy, West Lafayette, IN, United States