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某些巨型矿床的同位素特征和研究20个矿床(其中10个是巨型矿床)所得到的新成果表明,它们都有壳幔相互作用的痕迹。业已查明,这种相互作用在许多场合下都发生在地幔中,详细讨论了巨型矿床成因的同位素地球化学理论。按照这个理论,这些矿床是一种特殊现象,无论成矿元素的多样性如何,它们都有地幔中的壳幔相互作用所产生的地幔交代这样一个共同的因素。可以把作为不相容元素巨量堆积的花岗岩看成是巨型矿床的类似物;按照统计的结果,它们有可能在大约2 Ga 前的某个发展阶段系统富集,在这个阶段,物质的再循环伴随有显著的、产生地幔中所缺少的挥发分的壳幔相互作用。
The isotopic characteristics of some of the giant deposits and the new results from studying 20 deposits (10 of which are giant deposits) suggest that they all have traces of crust-mantle interaction. It has been ascertained that this interaction occurs in the mantle on many occasions, and discusses in detail the isotopic geochemical theory of the genesis of the mega deposits. According to this theory, these deposits are a special phenomenon that, irrespective of the diversity of metallogenetic elements, share the common factor of mantle dating due to crust-mantle interaction in the mantle. Granites, which are massive deposits of incompatible elements, can be considered as analogues of mega deposits; they are, according to the statistics, likely to be systematically enriched at a certain developmental stage up to about 2 Ga, and at this stage The cycle is accompanied by a pronounced crust-mantle interaction that produces the volatiles that are missing in the mantle.