1. College of Safety Science and Engineering Xi'an University of Science and Technology Xi'an Shaanxi China
2. Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou China
3. Oil and Gas Survey China Geological Survey Beijing China
4. State Key Laboratory of Continental Dynamics, Department of Geology Northwest University Xi'an China
5. Department of Geosciences Texas Tech University Texas USA
6. School of Earth Sciences and Engineering Xi'an Shiyou University Xi'an China