Chemical composition of deep sea manganese deposits determined at Kennecott C...

During the 1967-1968 period chemical analysis of both major and trace elements was performed on manganese nodules, crusts and micronodules on a large number of cores taken by...1967至1968年期间，研究人员对多根由……采集的岩芯所包含的锰结核（manganese nodules）、结壳（crusts）及微结核（micronodules）开展了常量元素与微量元素的化学分析。