Dongyang Liu, Wuhan, Hubei, China, Chunju Huang, China University of Geosciences Wuhan, Wuhan, China, David Kemp, School of Earth Sciences, China University of Geosciences, Wuhan, China, Mingsong Li, Pennsylvania State University, Geosciences, State College, PA, United States, Meiyi Yu, Guizhou University, Department of Resources & Environmental Engineering, Guiyang, China and William Foster, University College Dublin, School of Earth Sciences, Dublin, Ireland