摘要
拜仁达坝银铅锌多金属矿是中国目前少有的大型内生矿床之一,位于大兴安岭中南段西坡。矿床形成与燕山期花岗岩有关,受东西向断裂控制。区域上为Ag异常地球化学省,1/5万化探具有Ag、Pb、Zn、W、Sn、As、Sb等元素的组合异常。地球物理上表现出高极化率、低电阻率及ΔT磁异常特征。通过对地质、地球化学及地球物理成果的综合分析研究,建立了该矿床的综合异常找矿模型,即成矿地质环境(断裂、岩浆岩和矿体)+地球化学异常+地球物理异常,实现了单一方法的异常标志到综合异常模式找矿的跨越。该找矿模型的建立对大兴安岭西坡严重覆盖区及其它地区找矿具有重要意义。
Bairendaba silver-lead-zinc polymetallic deposit is located in the western slope of Daxinganling. It is one of a few large endogenetic deposits in China. This study shows that the mineralization is relative to Yanshanian granite, and controlled by EW faults. This place is in the regional geochemical anomaly of Ag Province with elements integrated anomaly of Ag, Pb, Zn, W, Sn, As, Sb and so on by the 1 / 50000 chemical exploration. The ore-bodies have high polarizability, low electronic resistivity, and △ T magnetic anomaly. Based on the comprehensive analysis of geological conditions, geochemical and geophysical results, we built integrated ore prospecting model of this deposit. It includes geological conditions （the relationship among faults, magmatic rocks and ore bodies）, geochemical and geophysical anomaly. The model can be used to guide the ore prospecting in the vegetation covering heavily western slope of Daxinanlin and other regions.
出处
《地质调查与研究》
2009年第2期131-137,共7页
Geological Survey and Research
基金
内蒙古自治区克什克腾旗拜仁达坝西矿区银铅锌多金属矿详查项目(内地地字[2003]3号)
关键词
拜仁达坝
铅等多金属矿
控矿条件
找矿模型
Bairendaba
zinc polymetallic deposit
ore-control condition
prospecting model
