1. Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin , Austin, TX 78712, USA
2. Department of Geological Sciences and Geological Engineering, Queen's University , Kingston, ON K7L 3N6, Canada
3. GEOTOP, Université du Québec à Montréal , Montreal, QC H2L 2C4, Canada
4. Department of Geological Sciences, College of Liberal Arts and Sciences, University of Florida , Gainesville, FL 32611-2120, USA
5. Department of Earth and Environmental Sciences, College of Natural Science, Michigan State University , East Lansing, MI 48824, USA