摘要
本文在综合分析格日勒图铜多金属矿点的地质特征、土壤地球化学异常的基础上,结合研究区最新的1∶10000航磁测量与大功率激电测深工作成果资料,对格日勒图铜多金属矿的找矿前景进行了探索分析。结果表明:目前已发现的铜锌多金属矿化体赋存于下石炭统白山组(C_(1)b)火山岩建造中,矿层底板为一套中基性火山岩,顶板为酸性流纹质火山碎屑岩,含矿岩性为酸性层凝灰岩。地表矿化带的土壤地球化学异常特征表现为Au、Ag、Cu、Pb、Zn、As、Sb、Hg、Bi、Mo、W多元素组合异常;深部矿化层位物探特征表现为高磁背景(基性火山岩)边缘的低磁异常+高极化、中低阻激电异常。通过对该区地物化特征的综合分析和成矿规律的总结,认为研究区具有较好的铜多金属矿床的成矿条件,在下石炭统白山组(C_(1)b)中寻找海相火山岩型块状硫化物矿床的找矿前景较好。文章为研究区内找矿工作提供了新思路和理论依据,具有一定的科学和现实意义。
Based on the comprehensive analysis of the geological characteristics and soil geochemical anomalies of the copper polymetallic deposits in Geriletu,combined with the latest 1∶10,000 aeromagnetic measurement and high-power IP sounding results in the study area,the prospect of geoprocess copper polymetallic deposits is explored and analyzed.The results show that the copper-zinc polymetallic mineralization found so far is present in the construction of volcanic rocks in the Lower Carboniferous Baishan Formation(C_(1)b),and the bottom plate of the ore layer is a set of medium-basal volcanic rocks,the top plate is acidic rhyolite volcanic clastic rock,and the ore-containing lithology is acidic layer tuff.Soil geochemical anomalies in the surface mineralized zone are characterized by the Anomaly of The Combination of Au、Ag、Cu、Pb、Zn、As、Sb、Hg、Bi、Mo、W,and the deep mineralization strata are characterized by low magnetic anomalies+high polarization and medium and low resistance excitation anomalies at the edge of the high magnetic background(basic volcanic rocks).Through the comprehensive analysis of the geophysical characteristics of the area and the summary of the metallogenic law,it is believed that the study area has better mineralization conditions for copper polymetallic deposits,and the prospect of prospecting for marine volcanic rock-type massive sulphide deposits in the Lower Carboniferous Baishan Formation(C_(1)b)is better.This paper provides new ideas and theoretical basis for ore prospecting in the study area,which has certain scientific and practical significance.
作者
侯朝勇
王寿成
方同辉
刘涛
张凯
HOU Chaoyong;WANG Shoucheng;FANG Tonghui;LIU Tao;ZHANG Kai(China Non-Ferrous Metals Resource Geological Survey,Beijing 100012,China;Liangshan Resources Technology(Beijing)Co.,Ltd.,Beijing 100012,China;Alxa League Rongtuo Copper Development Co.,Ltd.,Ejina 735400,Neimenggu,China)
出处
《矿产勘查》
2022年第4期442-452,共11页
Mineral Exploration
基金
中国地质调查局项目(DD20160001)资助。
关键词
下石炭统白山组
火山岩型硫化物矿床
成矿条件
找矿前景
Lower Carboniferous Baishan formation
VMS
mineralization conditons
prospecting potential
