[1]State Key Laboratory of Biogeology and Environmental Geology, China University ofGeosciences, Wuhan 430074, China;
[2]School of Earth Sciences, China University ofGeosciences, Wuhan 430074, China;
[3]State Key Laboratory of Geological Processes and Mineral Resources, China University ofGeosciences, Wuhan 430074, China;
[4]Department of Geology, University of Cincinnati, Cincinnati OH45221-0013, USA;