BENO, Carl, Geological Sciences, SUNY Geneseo, 1 College Circle, Geneseo, NY 14414, cjb20@geneseo.edu, METCALF, James R., Department of Geological Sciences, University of Colorado at Boulder, UCB 399, 2200 Colorado Ave, Boulder, CO 80309, FLOWERS, Rebecca, Department of Geological Sciences, University of Colorado, Boulder, Campus Box 399, 2200 Colorado Ave, Boulder, CO 80309, GIORGIS, Scott, Geological Sciences, SUNY Geneseo, 1 College Circle, Geneseo, NY 14454, USA USA, and WEBER, John, Geology, Grand Valley State University, 1 Campus Drive, PAD 118, Allendale, MI 49401