| 内蒙古老国营子金铜矿床地质-地球物理勘查与研究 |
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| 引用本文： | 陈伟军.内蒙古老国营子金铜矿床地质-地球物理勘查与研究[J].地质与勘探,2016,52(2):246-250. |
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| 作者姓名： | 陈伟军 |
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| 作者单位： | 1. 中国冶金地质总局矿产资源研究院,北京,101300;2. 中国地质大学(北京)地球科学与资源学院,北京,100083;3. 贵州省地矿局103地质大队,贵州铜仁,554300 |
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| 摘 要： | 内蒙古老国营子金铜矿床是近年来利用地质与地球物理相互结合手段新发现的一个矿床。本次研究利用基于电磁原理的地球物理手段进行了找矿测试,结果表明:甚低频(VLF)地球物理扫面发现了近EW向和NW向的高阻带,分别对应了两条相应的矿化蚀变带。音频大地电磁法(EH4)测深影像显示矿化蚀变带表现为高阻异常带,与VLF的测量结果相一致。激电(IP)中梯测量显示矿化蚀变带具有高阻、高充电率和高金属因子异常特征。结合具体的地质特征,在老国营子金铜矿区综合运用这三种地球物理方法,取得了较好的找矿效果。
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| 关 键 词： | 地球物理勘查 VLF EH4 IP 老国营子 |
| 收稿时间： | 2015/12/1 0:00:00 |
| 修稿时间： | 2016/3/11 0:00:00 |
Electromagnetics-based geophysical exploration in the Laoguoyingzi Au-Cu deposit, Inner Mongolian, China |
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| Chen Wei-jun.Electromagnetics-based geophysical exploration in the Laoguoyingzi Au-Cu deposit, Inner Mongolian, China[J].Geology and Prospecting,2016,52(2):246-250. |
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| Authors: | Chen Wei-jun |
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| Abstract: | The Laoguoyingzi Au-Cu deposit in Inner Mongolia is a newly discovered one in recent years by the using combination of geological geophysical methods. This paper presents the results of an experiment of using electromagentics-based geophysical methods to find ore indicators in this deposit. The techniques employed include the VLF (very low frequency), audio ground electromagnetic (EH4), and induced polarization (IP)) measurements. The results show that the VLF survey found nearly EW and NW trending belts of high resistance, which correspond to two mineralized alteration zones respectively. EH4 imaging indicates that the high mineralized alteration zone is characterized by high resistance zones, consistent with the measurement results of VLF. The IP measurement demonstrates that mineralization alteration belts have high charge rate, high resistance and the characteristics of the metallic factor anomalies. This experiment shows that the combined use of these three kinds of geophysical methods in the Laoguoyingzi Au-Cu mining area, coupled with the specific geological features, can achieve good results in searching for ore indicators, especially concealed ore bodies in the subsurface. |
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| Keywords: | geophysical exploration VLF EH4 IP Laoguoyingzi |
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