CRediT authorship contribution statement
Geng-biao Qiao and Wen-ming Li conceived of the presented idea. Geng-biao Qiao and Tian-hu Li performed the
computations and verified the analytical methods. All authors discussed the results and contributed to the final manuscript.
Declaration of competing interest
The authors declare no conflicts of interest.
Acknowledgement
This study was supported by the National Science Foundation of China (41302051), the Natural Science Foundation of Shaanxi Province (2020JM-311), and the project of China Geological Survey (DD20221636, DD20221691).
Supplementary data
Supplementary Tables. 1-2 to this article can be found online at doi: 10.31035/cg2021047.