Analysis of Manganese deposits from the Atlantic and Indian oceans

Accumulation rates of 1-2 mm/million years are reported for manganese crusts on deep-sea rocks. These rates are the same as most reported accretion rates for manganese nodules...已有研究报道，深海岩石表面的锰结壳（manganese crusts）堆积速率为1~2毫米/百万年。该速率与多数已报道的锰结核（manganese nodules）生长速率一致。