地质与勘探2018，Vol.54Issue(2)：252-263,12.
内蒙古多伦县义盛店银多金属矿控矿构造分析及深部找矿预测
The Ore-Controlling Structure and Prediction of the Deep Orebody in the Yishengdian Silver Polymetallic Deposit,Duolun County,Inner Mongolia
摘要
Abstract
The Yishengdian silver polymetallic deposit in Duolun county of Inner Mongolia is located in the northern margin of North China Craton, Duolun basin,which is known for its wide mineralized zone and stable surface extension. After geological exploration in recent years,only the shallow sil-ver metal resources of this deposit have reached a medium-sized scale,but the deep exploration is not so effective,leading to difficulties in further pros-pecting. Through the analysis of ore-controlling structure of No.V belt in the Yishengdian mine area,this work suggests that the tensional fault(F5) is the primary feature controlling orebodies, which made the orebodies have a lenticular shape with alternating dilation and shrink,and pinching out and reap-pearing. When the ore-bearing hydrothermal fluid flowed along the tensional fault upward,the sudden changes of temperature,pressure and other factors of the hydrothermal system resulted in the precipitation and separation of ore-forming elements to form the deposit. The earlier drillings which controlled deep orebodies only hit the narrow segment of the lenticular orebody,therefore could not encounter the thick orebody expected. According to the inversion results of IP sounding on exploration line 48, it is predicted that there may be another high-grade and thick lenticular orebody between elevations of 1300m and 1200m in the extension direction of the No. V ore belt.关键词
控矿构造/找矿预测/华北克拉通北缘/银多金属矿/多伦县Key words
ore-controlling structure/prospecting prediction/northern margin of North China Craton/silver polymetallic deposit/Duolun county/Yishengdian/Inner Mongolia分类
天文与地球科学引用本文复制引用
王自力,孙培周,陈超,张福祥,李英杰,胡建勇,王居松,范剑,金文强,曹锦元,黄小军,陈京玉..内蒙古多伦县义盛店银多金属矿控矿构造分析及深部找矿预测[J].地质与勘探,2018,54(2):252-263,12.基金项目
国家自然科学基金项目(1502211)、河北省自然科学基金项目(D2015403013)和中国地质调查局项目(1212011120701、1212011120711、12120114064201)联合资助. （1502211）
