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地球史上含锰沉积物全球分布的时代,不管在延续时间上还是在矿化规模上都是不均匀的。第一个锰的成矿时代相当于早元古代(特别是在22—18亿年之间),这个时期在伴有深大断裂的大陆太古界基底的内部原生地槽拗陷中不止一次地堆积了含锰的火山-沉积岩层。这里,锰富集在不含碳酸盐的受
The era of global distribution of manganese-bearing sediments in Earth’s history is uneven both in terms of duration and mineralization. The first manganese mineralization era corresponded to the Early Proterozoic (especially between 2.2 and 1.8 billion years) during this period more than once in the internal primary groove depression of the continental Archean basement with deep faults Manganese-bearing volcano-sedimentary formations are deposited. Here, manganese is enriched in carbonate-free