School of Geosciences;
China University of Petroleum;
Qingdao 266580;
China;
Laboratory for Marine Mineral Resources;
Qingdao National Laboratory for Marine Science and Technology;
Qingdao 266071;
China;
Qingdao Institute of Marine Geology;
Ministry of Natural Resources;
Qingdao 266071;
China;
State Key Laboratory of Loess and Quaternary Geology;
Institute of Earth Environment;
Chinese Academy of Sciences;
Xi’an 710075;
China;
sediment; XRF core scanning; element; deep sea; South China Sea;