Guanning Pang, University of Utah, Salt Lake City, UT, United States, Sin-Mei Wu, University of Utah, Department of Geology and Geophysics, Salt Lake City, United States, Keith D. Koper, University of Utah, Department of Geology and Geophysics, Salt Lake City, UT, United States and Garrett G Euler, Los Alamos National Laboratory, Los Alamos, NM, United States