1. Xi’an Shiyou University, School of Earth Science and Engineering, Xi’an 710065, China and Shandong University of Science and Technology, Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, Qingdao 266590, China.(corresponding author).
2. Changqing Oilfield Company, Research Institute of Exploration and Development, PetroChina, Xi’an 710018, China..
3. Xi’an Shiyou University, School of Earth Science and Engineering, Xi’an 710065, China..