Matthew Osman, University of Cambridge, Department of Geography, Cambridge, United Kingdom, Jessica E Tierney, University of Arizona, Department of Geosciences, Tucson, AZ, United States, Marcus Lofverstrom, University of Arizona, Department of Geosciences, Tucson, United States, Joseph Schnaubelt, University of Connecticut, Department of Earth Sciences, Groton, CT, United States, Clay Richard Tabor, University of Connecticut, Earth Sciences, Storrs, United States, Bradley Markle, University of Colorado Boulder, Institute of Arctic and Alpine Research, Department of Geological Sciences, Boulder, United States and Marco A Aquino-López, Centro de Investigación en Matemáticas (CIMAT), Guanajuato, Mexico