Geological Survey of Canada, 9860 West Saanich Rd., Sidney, BC V8L 4B2, Canada ; School of Earth and Ocean Sciences, University of Victoria, PO Box 3065, STN CSC, Victoria, BC V8W 3V6, Canada
Geological Survey of Canada, 9860 West Saanich Rd., Sidney, BC V8L 4B2, Canada ; School of Earth and Ocean Sciences, University of Victoria, PO Box 3065, STN CSC, Victoria, BC V8W 3V6, Canada ;
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States ;
Byrd Polar Research Center and School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States ;
Byrd Polar Research Center and School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States ;