DAY, James (Jed) E., Geography& Geology, Illinois State University, Campus Box 4400, Normal, IL 61790-4400, jeday@ilstu.edu, WHALEN, Michael T., Department of Geology and Geophysics, University of Alaska Fairbanks, P.O. Box 755780, Fairbanks, AK 99775, DE VLEESCHOUWER, David, Earth System Sciences, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium, and CLAEYS, Philippe, Department of Geology, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium