上黑龙江盆地多金属矿源层及成矿模式分析  

Source Beds and Mineralization Model of Multiple Metal Deposits in the Upper Heilongjiang Basin

作　　者：宋丙剑[1,2] 王献忠[2] 刘智杰[2] 公维国[2] 杨吉波 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]武警黄金第三支队,哈尔滨150069

出　　处：《地质与勘探》2010年第3期400-406,共7页Geology and Exploration

摘　　要：笔者总结了上黑龙江盆地地质特征及金矿床分布规律,通过对金及多金属元素丰度及流体同位素含量的分析,探讨了中生代火山岩及沉积岩的含矿性,认为上黑龙江盆地金矿床成矿物质来源包括深部岩浆(上地幔)、地壳过渡中心和围岩,深部岩浆、二十二站组构成了Au矿源层,中生代火山岩可做为Ag、Pb、Zn和Au矿床形成的矿源层,建立了成矿、找矿、方法模型,认为已知矿点与异常的关系指示了找矿的靶区,不同地质单元揭示了有利成矿层位,隆起与坳陷接触带、断裂、环形构造发育区是找矿的有利地带,二十二站组内应以找金为主、火山岩分布区以找多金属为主,并圈定4个金及多金属成矿远景区,实践证明预测是行之有效的。We summarized geological features and the golden ore deposit distribution rule in the Upper Heilongjiang basin. Through analysis to golden and polymetallic element abundance and the liquid isotope content,we studied the ore-bearing property of the Mesozoic volcanic rock and the sedimentary rock in this region. We thought that in the Heilongjiang basin,gold ore bed mineralization material sources include the deep magma （upper mantle; the earth＇s crust transition center and the and the country rock. The deep magma and Ershierzhan group constitute the Au mineral resource bed. The Mesozoic volcanic rock was probably the mineral source bed from which Ag,Pb,Zn and the Au ore deposit formed. Then we established the model for mineralization,prospecting. We thought that the known mineralization points and the anomaly relations indicate the prospecting target area. The different geological units suggest that favorable mineralization positions are associated with the contact zones between uplifts and depressions,faults and ring-like structures. In the Ershierzhan group the primary target is to find gold. In the volcanic rock area,polymetallic deposits are the primary goals of survey. And we have determined 4 prospecting areas with golden and the polymetallic mineralization. The practice proved that this forecast is effective.

关 键 词：矿源层 成矿模式 上黑龙江盆地 大兴安岭 

分 类 号：P612[天文地球—矿床学]