Joyce Ann Yager, University of Southern California, Los Angeles, CA, United States, Joep van Dijk, University of Colorado Boulder, Geological Sciences, Boulder, CO, United States, A. Joshua West, Univ. of Southern California, Los Angeles, CA, United States, Frank A Corsetti, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States and Julio Sepulveda, University of Colorado at Boulder, Department of Geological Sciences and the Institute of Arctic and Alpine Research, Boulder, CO, United States