1. Center for Planetary Tectonics at UGA, Department of Geology, University of Georgia, Athens, GA, USA
2. Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
3. Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC, USA
4. Planetary Structural Geology and Tectonics Group, Department of Geosciences, Mississippi State University, Mississippi State, MS, USA