1. Department of Geological Sciences, Stanford University, Stanford, CA, USA.
2. Department of Earth Sciences, St. Francis Xavier University, Antigonish, Nova Scotia, Canada.
3. Yukon Geological Survey, Whitehorse, Yukon, Canada.
4. Department of Geology, Trinity College Dublin, Dublin 2, Ireland.
5. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA.
6. Department of Geosciences, Virginia Polytechnic University and State University, Blacksburg, VA, USA.
7. Department of Earth Sciences, Western University Canada, London, ON, Canada.
8. School of the Environment, Geography and Geosciences, University of Portsmouth, Portsmouth, UK.
9. Department of Earth Sciences, Dartmouth College, Hanover, NH, USA.
10. Department of Geology, University of Puerto Rico, Mayagüez, Puerto Rico.
11. Department of Earth and Environmental Sciences, Vanderbilt University, Nashville, TN, USA.
12. Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA.