School of Earth and Ocean Sciences, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6 Canada ; Pacific Geoscience Center, Geological Survey of Canada, PO Box 6000, Sidney, BC V8L 4B2 Canada
School of Earth and Ocean Sciences, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6 Canada ; Pacific Geoscience Center, Geological Survey of Canada, PO Box 6000, Sidney, BC V8L 4B2 Canada ;
School of Earth and Ocean Sciences, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6 Canada ; Pacific Geoscience Center, Geological Survey of Canada, PO Box 6000, Sidney, BC V8L 4B2 Canada ;
School of Earth and Ocean Sciences, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6 Canada ; Pacific Geoscience Center, Geological Survey of Canada, PO Box 6000, Sidney, BC V8L 4B2 Canada ;
School of Earth and Ocean Sciences, University of Victoria, PO Box 3055, Victoria, BC V8W 3P6 Canada ; Pacific Geoscience Center, Geological Survey of Canada, PO Box 6000, Sidney, BC V8L 4B2 Canada ;
Pacific Geoscience Center, Geological Survey of Canada, PO Box 6000, Sidney, BC V8L 4B2 Canada ;