Center of Deep Sea Research;
Institute of Oceanology;
Center for Ocean Mega-Science;
Chinese Academy of Sciences;
Qingdao 266071;
China;
Laboratory for Marine Mineral Resources;
Qingdao National Laboratory for Marine Science and Technology;
Qingdao 266237;
China;
College of Earth Sciences;
Jilin University;
Changchun 130061;
China;
School of Marine Sciences;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
Tibet; Duolong porphyry Cu-Au deposit; Nb-enriched arc basalt; Tethys ocean; Ridge subduction;