摘要
通过在色棉拉矿区开展激电中梯测量,本文结合地质成果资料,进一步认识该矿区各类岩(矿)石的电性特征及分布情况,了解测区内激电异常在平面的分布规律及展布情况。经过成果资料整理及分析,在整个物探工作的区域内,结合视极化率异常产出部位的地质现象,识别并划分了6处局部激电异常。本次激电中梯测量的异常反映出较高的极化率与偏低的电阻率,测区内分布较多的褐铁矿及黄铁矿化现象,由此来看,测区内热液活动可能较强。JD1及JD3-2异常处有黄铜矿化点出露,经推测,JD1及JD3-2异常处具有较好的成矿地质条件。因此,首先针对分布于角岩地段、视极化率在6%~10%的各异常(JD1及JD3)开展进一步工作,以查明异常产生的原因。
Through conducting induced polarization gradien array measurement in Semianla mining area,this paper further understands the electrical characteristics and distribution of various rocks (ores) in the mining area in combination with geological achievement data,and understands the distribution law and distribution of induced polarization anomaly in the plane in the survey area.After sorting out and analyzing the achievement data,6 local induced polarization anomalies are identified and divided in the whole geophysical exploration area in combination with the geological phenomena at the location where the apparent polarizability anomaly occurs.The anomaly of this induced polarization gradien array measurement reflects high polarizability and low resistivity,and there are many limonite and pyrite mineralization phenomena in the survey area,from this point of view,the hydrothermal activity in the survey area may be strong.Brass mineralization points are exposed at JD1 and JD3-2 anomalies,it is speculated that the JD1 and JD3-2 anomalies have good metallogenic geological conditions.Therefore,first of all,further work should be carried out on the anomalies (JD1 and JD3) distributed in the hornrock section with apparent polarizability of 6%~10%,so as to find out the causes of the anomalies.
作者
刘岳军
郭琳
王连宏
LIU Yuejun;GUO Lin;WANG Lianhong(Regional Geological Survey Brigade of Tibet Geological Survey Bureau,Lhasa 850000,China)
出处
《中国资源综合利用》
2022年第11期48-52,共5页
China Resources Comprehensive Utilization
基金
中国地质调查局成都地质调查中心“三江造山带昌都-澜沧地区区域地质调查”(DD20190053-01)。
关键词
激电法
分布规律
指示意义
induced polarization method
distribution rule
referential meaning
