Rare-earth element analyses for iron-manganese crusts of the Pacific Ocean

Iron-manganese crusts were chosen from existing collections in order to cover as wide an area and depth range as possible. Sampling was concentrated in the Central Pacific...为尽可能覆盖更广的区域与深度范围，研究人员从现有标本馆藏中遴选铁锰结壳（iron-manganese crusts）样本。采样工作重点集中于中太平洋海域……