1. Geological Survey of Canada—Atlantic, Natural Resources Canada, 1 Challenger Dr., Dartmouth, NS B2Y 4A2, Canada
2. Department of Earth and Environmental Sciences, Dalhousie University, Halifax, NS B3H 4R2, Canada
3. Geological Survey of Canada—Central, Natural Resources Canada, 601 Booth St., Ottawa, ON K1A 0E9, Canada
4. Geological Survey of Canada—Calgary, Natural Resources Canada, 33033 33 St NW, Calgary, AB T2L 2A7, Canada
5. Department of Earth Sciences, Memorial University of Newfoundland, 9 Arctic Ave, St. John's, NL A1B 3X5, Canada