1. School of Earth and Sustainability Northern Arizona University Flagstaff AZ USA
2. Department of Earth, Marine and Environmental Sciences The University of North Carolina at Chapel Hill Chapel Hill NC USA
3. USGS Luminescence Dating Laboratory US Geological Survey Denver CO USA
4. Earth and Ecosystems Sciences Desert Research Institute Reno NV USA
5. Department of Earth and Environment Boston University Boston MA USA
6. School of Earth and Ocean Sciences University of Victoria Victoria BC Canada