Anna Clinger, University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, Matthew Fox, University College London, Earth Sciences, London, United Kingdom, Greg Balco, Berkeley Geochronology Center, Berkeley, CA, United States, Kurt M Cuffey, University of California Berkeley, Geography, Berkeley, CA, United States and David L Shuster, University of California Berkeley, Department of Earth and Planetary Sciences, Berkeley, CA, United States