1. Sciences de la Terre, Université du Québec à Chicoutimi, 555 boulevard de l’université, QC G7H 2B1, Canada
2. Geological Survey of Norway, P.O. Box 6315 Torgarden, NO-7491, Trondheim, Norway
3. School of Earth and Environmental Sciences, Cardiff University, Cardiff, United Kingdom
4. Department of Geology, Rhodes University, Makhanda, 6140, South Africa