GRIMLEY, David1, NASH Jr., T. Andrew2, DENDY-METZ, Sarah3, RECH, Jason4, CURRY, Ben1, CONROY, Jessica L.5 and GUENTHNER, William6, (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 Earth Science & Environmental Change, University of Illinois at Urbana-Champaign, 3081 Natural History Building, 1301 W. Green St., Urbana, IL 61801, (6)Department of Earth Science & Environmental Change, University of Illinois at Urbana-Champaign, Urbana, IL 61801