有关锰结核及其金属富集的制约因素问题,已有不少作者报道过,认识较为普遍的有沉积速率、核种物质和沉积物类型对锰结核赋存的制约作用以及来源物质、环境因子(Eh、水深等)对金属富集的重要影响. 鉴于水深对大洋底部沉积物类型及沉积物中的金属富集制约作用,考虑到Cronan Many researchers have reported about the restriction factors of manganese nodules and their metal enrichment. The most common understanding is that the deposition rate, the restriction effect of nuclear species and sediment types on the occurrence of manganese nodules, as well as the source materials, environmental factors (Eh, water depth, etc.) have important implications for metal enrichment. Given the depth constraints on sediment types in the ocean floor and metal enrichment in sediments, Cronan