论文部分内容阅读
科拉半岛超深钻井打钻和研究的结果现已查明，在所揭穿的古大陆地壳１２ ｋｍ的范围内全都存在有矿化。据成矿元素组合、存在形式及矿物共生组合，在科拉半岛超深钻井剖面上可划分出６ 种主要的矿化类型：铜镍的硫化物及铂金属矿化；铁的硫化物矿化；铁的氧化物矿化；铁钛的氧化物矿化；铜锌的硫化物矿化；自然金矿化。据矿物成分、围岩特征及矿化成因，前４ 种类型的矿化与元古代彼禅格矿区的构造及其太古代镶边的矿化可以对比。后２ 种类型的情况还不十分清楚。据统计资料得出的结论是：分布最广泛的矿化既发育在元古代的杂岩中，也发育在太古代的杂岩中。向地壳深部，磁黄铁矿和镍黄铁矿中镍的含量增加，而黄铜矿中的铁、镍、铜的变化增大。
The results of ultra-deep drilling drilling and research in the Kola Peninsula have now been identified, with mineralization all occurring within 12 km of the exposed continental crust. According to the combination of ore-forming elements, existent forms and mineral assemblages, six major mineralization types can be distinguished in the ultra-deep drilling section of Kola Peninsula: Cu-Ni sulfide and platinum metal mineralization; iron sulphide mineralization ; Iron oxide mineralization; iron oxide mineralization; copper and zinc sulfide mineralization; natural gold mineralization. According to mineral composition, characteristics of surrounding rock and mineralization, the first four types of mineralization can be contrasted with the structure of the Paqentuozoic metamorphic mineralization and the Archean rim mineralization. The latter two types of situation is not yet clear. According to statistics, it is concluded that the most widely distributed mineralization is developed both in the Proterozoic complex and in the Archean complex. To the deep crust, the content of nickel in pyrrhotite and pentlandite increases, while the change of iron, nickel and copper in chalcopyrite increases.