论文部分内容阅读
二十一站-宝兴沟位于上黑龙江断陷盆地的东南部,近年来相继发现了宝兴沟大型岩金矿床,十五里桥中型岩金矿床以及二十一站小型铜金矿床。为提高找矿理论水平,进一步在该区找矿,本次对该区矿床的地质特征及时空分布规律进行了研究。通过研究表明,矿床除受NE向断裂构造控制外,岩浆岩、地层对矿床也有一定的控制作用。在二十一站断陷内的二十二站组地层中,沿着NW向、EW向与NE向断裂构造交汇部位发生成矿作用,形成了一个“火山岩-断裂构造-侵入岩-地层”为一体的浅成低温热液成矿系统。系统内具有多处与已知矿床相似的成矿地质条件,且有Au、Ag、Cu化探异常存在,具备形成大型浅成低温热液型金及多金属矿床的潜力。
Twenty-one Station - Baoxinggou is located in the southeastern part of the upper Heilongjiang rift basin. In recent years, Baoxinggou large-scale rock gold deposit, Shiwuliqiao medium-sized rock gold deposit, and Twenty-one Station small copper-gold deposit have been successively discovered. In order to improve ore-prospecting theory level and prospect ore prospecting in this area, the geological characteristics and temporal-spatial distribution of deposits in this area are studied. The study shows that the magmatic rocks and strata have some control over the ore deposit in addition to being controlled by NE-trending faults. In the Twenty-two Stratotype Formation within the Twenty-1 Station Faulted Depression, metallogenesis took place along the intersection of NW and EW with the NE-trending fault structure, forming a “volcanic-fault-intrusive-stratigraphic ”As one of the shallow into the low temperature hydrothermal mineralization system. There are several metallogenic geological conditions in the system which are similar to those of the known deposits. There are also abnormalities of geochemical anomaly of Au, Ag and Cu, which have the potential of forming large-scale epithermal gold and polymetallic deposits.