GRABOS, Nicole, Geosciences, Indiana University Northwest, Gary, IN 46408, ngrabos@umail.iu.edu, ARGYILAN, Erin, Geosciences, Indiana University Northwest, 3400 Broadway, Gary, IN 46408, LEPPER, Kenneth, Optical Dating and Dosimetry Lab, North Dakota State University, Department of Geosciences, P.O. Box 6050, Dept. #2745, Fargo, ND 58108-6050, and THOMPSON, Todd A., Indiana Geological Survey, Indiana University, 611 North Walnut Grove, Bloomington, IN 47405-2208