1. Department of Earth and Planetary Sciences, University of New Mexico, MSCO3‐2040, 1, Albuquerque, New Mexico 87131 U.S.A., nranasinghe@unm.edu
2. Department of Earth and Environmental Sciences, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, New Mexico 87801 U.S. A.
3. Department of Geosciences, Warner College of Natural Resources, Colorado State University, 1482, Fort Collins, Colorado 80523 U.S.A.