1. College of Earth SciencesJilin University Changchun 130061 China
2. Key laboratory of Mineral Resources Evaluation in Northeast AsiaMinistry of Natural Resources, Jilin University Changchun 130061 China
3. Key Lab of Submarine Geosciences and Prospecting TechniquesMinistry of Education Institute for Advanced Ocean Study, College of Marine Geosciences, Ocean University of China Qingdao Shandong 266100 China
4. Laboratory for Marine Mineral ResourcesQingdao National Laboratory for Marine Science and Technology Qingdao Shandong 266237 China
5. Department of Geography and GeologyUniversity of Salzburg Salzburg A‐5020 Austria