1. Ottawa-Carleton Geoscience Centre , Department of Earth Sciences, , 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
2. Carleton University , Department of Earth Sciences, , 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
3. Geological Survey of Canada , 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada
4. Jack Satterly Geochronology Laboratory , Department of Earth Sciences, , 22 Ursula Franklin St, Toronto, Ontario M5S 3B1, Canada
5. University of Toronto , Department of Earth Sciences, , 22 Ursula Franklin St, Toronto, Ontario M5S 3B1, Canada
6. Tomsk State University Faculty of Geology and Geography, , Tomsk 634050, Russia
7. Geological Survey of Finland (GTK) , Lähteentie 2, Rovaniemi 96400, Finland
8. Geological Survey of Finland (GTK) , Vuorimiehentie 5, Espoo 02151, Finland