GRIMLEY, David1, NASH Jr., T. Andrew2, DENDY-METZ, Sarah3, RECH, Jason4, CURRY, Ben1, CONROY, Jessica L.3 and GUENTHNER, William5, (1)Illinois State Geological Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 615 E Peabody Dr., Champaign, IL 61820, (2)Ohio Department of Natural Resources, Division of Geological Survey, 2045 Morse Rd., Columbus, OH 43229, (3)Department of Geology, University of Illinois at Urbana-Champaign, 3081 Natural History Building, 1301 W. Green St., Urbana, IL 61801, (4)Department of Geology and Environmental Earth Science, Miami University, 118 Shideler Hall, Oxford, OH 45056, (5)Department of Geology, University of Illinois at Urbana-Champaign, Urbana, IL 61801