1. Department of Earth Science Bullard Laboratories University of Cambridge Cambridge UK
2. Now at Université Claude Bernard Lyon 1, ENS de Lyon CNRS, UMR 5276 LGL‐TPE Villeurbanne France
3. Centre de recherche Geotop Université du Québec à Montréal Montréal QC Canada
4. Department of Meteorology and Geophysics University of Vienna Vienna Austria
5. Geology Department Wayne State University Detroit MI USA
6. Department of Earth Science and Engineering Royal School of Mines Prince Consort Road Imperial College London London UK
7. Geological Survey of Canada Pacific Division Sidney BC Canada
8. Department of Earth and Environmental Sciences University of Ottawa Ottawa ON Canada
9. Department of Geosciences and Warner College of Natural Resources Colorado State University Fort Collins CO USA