[1] Virginia Tech,
[2] Department of Geosciences,undefined
[3] University of California,undefined
[4] Los Angeles,undefined
[5] Department of Earth,undefined
[6] Planetary,undefined
[7] and Space Sciences,undefined
[8] Ardhi University,undefined
[9] Department of Geomatics,undefined
[10] University of Nevada,undefined
[11] Nevada Bureau of Mines and Geology,undefined