1. Washington University, St. Louis, Missouri 63130, USA
2. Michigan State University, Geological Sciences, East Lansing, Michigan 48824, USA
3. Department of Geological Sciences, University of Colorado at Boulder, Boulder, Colorado 80309, USA
4. National Center for Earth-Surface Dynamics, University of Minnesota, Minneapolis, Minnesota 55414, USA
5. School of Engineering, University of California–Merced, Merced, California 95343, USA
6. Geo Prose, 5610 Gloster Road, Bethesda, Maryland 20816-2058, USA
7. Geological Society of America, Boulder, Colorado 80301, USA
8. Denver Museum of Nature and Science, 2001 Colorado Boulevard, Denver, Colorado 80205, USA
9. United States Geological Survey, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA
10. Paleontological Research Institution Outreach, 1259 Trumansburg Road, Ithaca, New York 14850, USA
11. Incorporated Research Institutions for Seismology, 1200 New York Avenue NW, Suite 800, Washington, DC 20005, USA
12. Department of Geosciences, Hamilton College, Clinton, New York 13323, USA
13. College of Exploration, 230 Markwood Drive, Potomac Falls, Virginia 20165, USA