1. Chang’an University, School of Geology Engineering and Geomatics, Xi’an 710054, ChinabMinistry of Education, Key Laboratory of Western China’s Mineral Resources and Geological Engineering, Xi’an 710054, China
2. Southern Methodist University, Roy M. Huffington Department of Earth Sciences, Dallas, Texas 75275, United States
3. Chang’an University, School of Geology Engineering and Geomatics, Xi’an 710054, ChinadHong Kong Polytechnic University, Department of Land Surveying and Geo-Informatics, Hong Kong 999077, China