School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3P6 Canada
School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3P6 Canada ; Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8l 4B2 Canada ;
School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3P6 Canada ; Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8l 4B2 Canada ;