Michael L Griffiths, William Paterson University of New Jersey, South River, NJ, United States, Jiayi Lu, China University of Geosciences Wuhan, Wuhan, China, Huan Yang, China University of Geosciences Wuhan, Faculty of Earth Sciences, Wuhan, China, Natalie Burls, George Mason University Fairfax, Fairfax, VA, United States, Guoqiao Xiao, State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China, Jilong Yang, China Geological Survey, Tianjin, China and Shucheng Xie, China University of Geosciences, Wuhan, China