1. Shandong Province Research Institute of Coal Geology Planning and Exploration, Jinan 250104,China 2. Key Laboratory of Coal Geophysics, Chinese Geophysical Society, Jinan 250104,China 3. Engineering Technology Research Center on Coal Resources Informatization of Shandong Province, Jinan 250104 China 4. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083,China
Rich iron ore has been drilled in the depth from 748 m to 1 542 m in Qihe-Yucheng area. As the Quaternary sediments cover more than 500 m in thickness, the geophysical field information of the rich iron ore is weak and hence the prospecting is difficult. By studying airborne and ground gravity and magnetic anomaly characteristics of mineralization anomaly and using methods such as reduction to the pole, vertical derivative and total gradient module, the authors further reduced the prospecting target and provided a basis for the drilling work. The authors extracted the direct prospecting information of rich iron ore, established the geophysical prospecting signs of this area and delineated 7 key exploration areas. The results of this research provide an important basis for the subsequent deployment of prospecting work in Qihe-Yucheng area.
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