*Eric Roots1,2、Graham Hill3,4、Ben Frieman1、Richard Smith1、James Craven2
(1.Mineral Exploration Research Centre, Laurentian University, Sudbury, Canada、2.Geological Survey of Canada, Ottawa, Canada、3.Institute of Geophysics, Czech Academy of Science, Prague, Czech Republic、4.Gateway Antarctica, University of Canterbury, Christchurch, New Zealand)