Wubing Deng State Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao 266580, P. R. China;
School of Geosciences, China University of Petroleum (East China), Qingdao 266580, P. R. China;
Laboratory for Marine Mineral Resources, Qingdao Marine Science and Technology Center, Qingdao 266237, P. R. China China
Igor B. Morozov Department of Geological Sciences, University of Saskatchewan, Saskatoon S7K 0J5, Canada Canada
Li-Yun Fu State Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao 266580, P. R. China;
School of Geosciences, China University of Petroleum (East China), Qingdao 266580, P. R. China;
Laboratory for Marine Mineral Resources, Qingdao Marine Science and Technology Center, Qingdao 266237, P. R. China