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淮北前常~徐楼地区位于安徽省北部,属黄淮海平原区,基岩埋深100~300m,为典型中等厚度新生界覆盖区,地质找矿工作难度大。该区处于华北陆块南部,金属矿产资源丰富,以夕卡岩型铁铜矿床为主,与华北地区邯邢式矿床相类似。笔者从2005开始,一直在该区从事覆盖区综合找矿方法研究工作,投入了大量综合物探和钻探工作量,分析了成矿地质条件、研究了已知矿床地质与物探异常特征,对区内各类物探异常进行了系统分类解释,提出了“区域研究选区、重磁扫面定靶、综合勘查定位、钻探测井定性”的淮北覆盖区综合找矿模式。钻探验证表明,该项研究工作取得了较好的找矿效果。文中对该区成矿模式、已知矿床物探异常特征、各类物探异常分类与解释、覆盖区找矿模式等研究成果进行了介绍,充分体现了地质与物探的紧密结合。供同行参考使用。
The former Huaibei ~ Xuelou area is located in the northern part of Anhui Province and belongs to the Huang-Huai-Hai Plain. The bedrock depth is 100-300m, which is a typical medium-thickness Cenozoic area. It is difficult to find the geological prospecting work. The area is located in the southern part of the North China landmass, rich in metal mineral resources, mainly skarn-type iron-copper deposits, similar to the Hanxing deposit in North China. Starting from 2005, the author has been engaged in the study of comprehensive prospecting methods for the covered area in this area. He has invested a large amount of geophysical and drilling workloads, analyzed the geological conditions of mineralization, studied the geology and geophysical anomalous characteristics of the known mineral deposits, Various types of geophysical anomalies were systematically categorized and explained, and a comprehensive prospecting pattern for the area covered by Huaibei area was put forward such as “regional research constituency, heavy and magnetic scanning target setting, comprehensive exploration and orientation, and drilling logging qualitative”. Drilling verification shows that the research has achieved good prospecting results. In this paper, the research results of metallogenic model, known geophysical anomalies, various types of geophysical anomalous classification and interpretation, and prospecting patterns in the covered area are introduced in this paper, which fully embodies the close combination of geology and geophysical exploration. For peer reference.