摘要
详细查明青海布茸西—温泉三站铜多金属矿评价区碾廷曲(Hs35甲1)重要矿(化)体产状、顶板埋深及激电特征,可以为钻探布置提供依据。本文采用激电中梯和激电测深相结合的方法对其进行地球物理勘查,中梯扫面圈定三处低阻高激化带,激电测深着重对M2异常进行精细解译。研究结果表明激电中梯和激电测深的联合应用,可以快速圈定铜多金属矿化分布区,分解细化异常,判断出矿化体的产状、顶板埋深等参数,为钻探工程布置提供依据。经钻探验证,M2异常由含银、钴、铜矿化的黄铁矿引起,银、钴、铜与黄铁矿的沉积相关,而黄铁矿分布特征可能与层内凝灰岩的沉积相关。本文根据激电异常圈定极化体并预测隐伏矿化体,可为铜多金属勘查工作部署提供借鉴意义。
In order to find out the occurrence,roof buried depth and induced current characteristics of the important polarizable body in Niantingqu(Hs35-jia-1)in the evaluation area of Burongxi-Wenquansanzhan copper polymetallic ore deposit in Qinghai,and to provide basis for drilling arrangement.The method of Ip medium gradient and IP sounding is used to carry out geophysics survey,and three low resistance and high polarization zones are delineated on the surface of Ip medium gradient.The results show that the application of Ip medium ladder and IP sounding can quickly delineate the distribution area of Cu-polymetallic mineralization,decompose and refine the anomalies,and judge the occurrence of mineralized bodies and the buried depth of roof.It is proved by drilling that the M2 anomaly is caused by pyrite associated with silver,cobalt and copper mineralization.The silver,cobalt and copper are related to the deposition(or intrusion)of Pyrite,and the distribution of pyrite may be related to the deposition of Tuff in the formation.The authors have made a full analysis and study of the exploration results obtained by the induced polarization method in the evaluation area,and it is reliable to delineate the polarizing bodies and predict the concealed mineralized bodies according to the induced polarization anomalies,it is hoped that it can be used for reference in the exploration of copper polymetallic deposits.
作者
郭润平
常钰斌
张康
程斌
Guo Runping;Chang Yubin;Zhang Kang;Cheng Bin(The second comprehensive geophysical exploration party Limited Company,Shaanxi Bureau of Geology and Mineral Resources,Xi’an 710016,Shaanxi,China)
出处
《矿产勘查》
2021年第6期1378-1387,共10页
Mineral Exploration
基金
西南三江有色金属资源基地调查子项目“青海格尔木市布茸西—温泉三站铜多金属矿调查评价”(12120114045201)资助
关键词
地质调查工程
激电中梯
激电测深
矿(化)体
青海
geological survey engineering
Ip intermediate gradient survey
Ip sounding method
mineralized(polarizable)body
Qinghai province
