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问题的提出多年来,在金属矿床的成矿假说中,岩浆(包括火山)成矿假说及风化-沉积成矿假说受到广泛支持.但自然界中还存在一大批矿床,其特点介于上述两类典型矿床之间.例如,很多矿床具明显的热液成矿特征,并没有与之有关的岩浆活动或其关系可疑.又如,有的矿床具明显的沉积特征,但又有另一系列特点:①矿化可以孤立出现;②矿体厚度和厚度梯度大;③伴生组分复杂;④沉积成矿现象与可被解释为热液成矿
PROBLEM PROBLEMS Over the years, the mineralization hypothesis of the magma (including volcanoes) and the weathered-sedimentary mineralization hypothesis have been widely supported in the mineralization hypothesis of metal deposits, but there are still a large number of deposits in nature, which are characterized by the above two types For example, many mineral deposits have obvious hydrothermal mineralization features with no associated magmatic activity or suspicious relationships, or, as evidenced by the obvious depositional characteristics of some deposits, yet another series of features : ① mineralization can occur in isolation; ② large thickness and thickness gradient of ore body; ③ complex associated components; ④ sedimentary mineralization and can be interpreted as hydrothermal mineralization