1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2. CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
3. University of Chinese Academy of Sciences, Beijing 10069, China
4. Norwegian Geotechnical Institute (NGI), P.O. Box 3930 Ullevaal Stadion, Oslo N-0806, Norway
5. Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
6. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China