SALVATORE, Mark, Department of Astronomy and Planetary Science, Northern Arizona University, NAU Box 6010, Flagstaff, AZ 86011-6010, SANKEY, Joel B., U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center, Flagstaff, AZ 86001, DEAN, David J., Grand Canyon Monitoring and Research Center, U.S. Geological Survey, Flagstaff, AZ 86001, GOUDGE, Timothy, The University of Texas at AustinJackson School of Geosciences, 2275 Speedway Stop C9000, Austin, TX 78712-1127, TITUS, Timothy, USGSAstrogeology, 2255 N Gemini Dr, Flagstaff, AZ 86001-1637, UNEMA, Joel, U.S. Geological Survey, Arizona Water Science Center, 2255 North Gemini Drive, Flagstaff, AZ 86001, CHAPLINE, Daphne, Geology Department, Pomona College, Claremont, CA 91711 and CASTER, Joshua, Remote Sensing and Geoinformatics Lab, School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ 86011