EVANS, Kevin Ray, Geography, Geology, and Planning, Missouri State University, 901 S. National Ave, Springfield, MO 65897, BASSETT, Damon J., Geological Sciences, University of Missouri, 101 Geological Sciences Bldg, Columbia, MO 65211, ETHINGTON, Raymond L., Geological Sciences Dept, University of Missouri-Columbia, Columbia, MO 65211, MANGER, Walter L., Department of Geosciences, University of Arkansas, Fayetteville, AR 72701, MICKUS, Kevin L., Department of Geography, Geology, and Planning, Missouri State University, 901 S. National Avenue, Springfield, MO 65897 and MILLER, James F., Geography, Geology, & Planning Dept, Missouri State University, Springfield, MO 655897, kevinevans@missouristate.edu