辽宁省八家子多金属矿床成矿理论探讨

Discussion on the metallogenic theory of the Ba Jiazi polymetallic deposit in Liaoning Province

八家子多金属矿床地处华北地台北缘,山海关台拱与辽西台陷的结合部位,在二者过渡薄弱地带,中生代构造—岩浆活动非常强烈。多期次多阶段的岩浆活动为矿床提供了充足的热源与成矿来源,在斑岩体周围、岩浆岩体与碳酸盐岩接触部位及断裂、裂隙内形成了斑岩型—矽卡岩型—中低温岩浆热液充填交代型矿床,即复合成因岩浆热液型矿床。

The Ba Jiazi polymetallic deposit are located in the northern margin of the North China Platform, The combination of Shanhaiguan platform arch and Western Liaoning platform subsidence , In the weak transition zone, The Mesozoic tectonics - magmatic activity is very strong . Multistage and multi-stage magmatic activities provide the deposit with sufficient heat source and source of mineralization , around the pluton,on the contact area of magmatic rock and carbonate rocks and faults, formed porphyry—skarn—Medium and low temperature magmatic hydrothermal filling metasomatism deposits,namely the compound magmatic hydrothermal deposit.