The Application of Electromagnetic Sounding Method to Deep Iron Ore Exploration: A Case Study of the Wuyang Iron Mining Area of Henan
详细信息
- 责任者：Li Bing (No.2 Geological Party ; Henan Bureau of Geology and Nonferrous Metal Resources ; Zhengzhou 450000 ; China) ; Chao Daichao
- 刊名：Geology in China
- 出版年：2013
- 卷期：40(5)
- 关键词：可控源音频大地电磁法 ; controlled-source audio magnetotelluric methods ; 瞬变电磁法 ; transient electromagnetic methods ; 铁矿 ; iron ores ; 河南 ; Henan Province
- 页码：p.1644-1654
- 图表：7 illus., 2 tables, 14 refs.
- 分类号：1600
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
摘要
This paper has described the application of controlled source audio-frequency magnetotellurics(CSAMT) and transient electromagnetic sounding(TEM) to the detection and exploration prognosis of iron deposits in Wuyang-Wanglou and Xiaohan Village areas of Henan Province. The results show that using CSAMT and TEM in search for concealed meta-sedimentary iron deposits is feasible. Under the same geological conditions, the line source TEM has the largest effective detection depth, followed by CSAMT, and the central loop TEM is the most ineffective. The TEM method is more influenced by the interference of the low resistivity body than the CSAMT method, but its vertical resolution is better than that of the CSAMT method. With Jingshansi, Xiaohan Village and Lenggang areas as the center, the authors used CSAMT to predict deep concealed ore bodies in the strong interference segment of the iron ore mining area, and the results provide a basis for the next step deployment of exploration work.
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