Affiliation: | 1. Planetary Science Institute, Planetary Geoscience, Tucson, AZ, USA;2. University of Oxford, School of Geography and the Environment, Oxford, UK;3. Western Mapping, Tucson, AZ, USA;4. University of the West Indies, Mona GeoInformatics Institute, Kingston, Jamaica;5. University of Toronto, Department of Geology, Toronto, Ontario, Canada |