1. Lithoprobe and Department of Earth & Ocean Sciences, The University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada.
2. Seismology and Electromagnetic Section, Geological Survey of Canada – Ottawa, 615 Booth Street, Ottawa, ON K1A 0E9, Canada.
3. Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 0W0, Canada.