1. Department of Earth and Atmospheric Sciences University of Alberta Edmonton Alberta Canada
2. Department of Geology University of Tartu Tartu Estonia
3. Department of Geosciences CAGE – Centre for Arctic Gas Hydrate, Environment and Climate UiT The Arctic University of Norway Tromsø Norway
4. Geological Survey of Norway Trondheim Norway
5. Institute of Geology Tallinn University of Technology Tallinn Estonia
6. Department of Earth Sciences University of Minnesota–Twin Cities Minneapolis Minnesota
7. GFZ German Research Centre for Geosciences Section 4.3: Chemistry and Physics of Earth Materials Potsdam Germany