Geena Littel¹, Michael G Bostock¹, Charles G Sammis^1,2, Honn Kao³, Andrew Schaeffer⁴ and Collin Paul⁵, (1)University of British Columbia, Vancouver, BC, Canada, (2)Univ Southern California, Los Angeles, CA, United States, (3)Geological Survey of Canada, Pacific Geoscience Centre, Sidney, BC, Canada, (4)Geological Survey of Canada, Sidney, Canada, (5)Geological Survey of Canada, Sidney, BC, Canada