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我们发现长江中下游地区内生铁铜矿与含蒸发岩的中三迭统有关的现象之后,又分析了华北内生铁铜矿与含蒸发岩的中奥陶统有关的资料,从而得出了“后来岩浆侵入或穿过早期的含蒸发岩地层时,便有利于内生铁铜矿的富集”的初步结论。也就是说,对内生铁铜矿床形成的围岩条件,蒸发岩比其它岩石具有更大的意义。从这个认识出发,我们曾指出:“对那些早期蒸发岩受后来岩浆活动直接影响的地区,开展铁铜的找矿工作是有利的”。为此,我们对我国成盐的时
After discovering that the endogenous iron-copper deposits in the middle and lower reaches of the Yangtze River are related to the Middle Triassic with evaporites, we have also analyzed the data related to the Central Ordovician with evaporites in northern China and concluded that “ Later magma invades or passes through the early evaporite-bearing formations, it is conducive to the enrichment of endogenous iron-copper deposits. ” In other words, the evaporites have more significance than other rocks for the formation of surrounding rock in the endogenous iron-copper deposits. From this understanding, we have pointed out: “For those early evaporites that are directly affected by later magmatic activity, it is advantageous to carry out prospecting for iron and copper.” For this reason, when we salt our country