| 陈伟军.甚低频电磁法在隐伏金属矿床定位预测中的应用----以大兴安岭西南段铜多金属矿点为例[J].地质与勘探,2017,53(3):528-532 |
| 甚低频电磁法在隐伏金属矿床定位预测中的应用----以大兴安岭西南段铜多金属矿点为例 |
| Application of very low frequency electromagnetic to positioning of concealed metal deposits: An example of copper polymetallic ore occurrences in the Southwest Greater Hinggan Mountains |
| 投稿时间：2016-05-03 修订日期：2017-03-02 |
| DOI：10.12134/j.dzykt.2017.03.012 |
| 中文关键词: 甚低频电磁法 隐伏矿床 成矿预测 地球物理勘探 |
| 英文关键词: very low frequency, hidden deposit, metallogenic prediction, geophysical exploration |
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| 中文摘要: |
| 甚低频电磁法为基于电磁原理的地球物理手段，该方法对寻找受断裂构造控制的脉状矿床效果显著。在矿床勘查中，一般用于目标矿区（及外围）地质体对电磁波作用反映的物性特征进行扫面工作，用以快速发现覆盖层之下矿化构造系统。通过大兴安岭西南段某铜多金属矿点的实际应用，发现矿区内存在明显的甚低频异常，该异常为矿致异常，展示了良好的成矿前景。实践表明，在具备甚低频电磁法应用的地质、地球物理条件的前提下，通过对观测数据进行技术处理，并结合矿区针对性的地质研究，能够有效的揭示覆盖区断裂构造体系的产状及空间展布规律，达到对隐伏-半隐伏金属矿床快速评价的目的。 |
| 英文摘要: |
| The very low frequency electromagnetic (VLF-EM) technique, which belongs to a geophysical method based on electromagnetic principle, is very effectively to find out vein-type ore bodies controlled by faults. In the exploration of ore deposits, it is generally employed to screen the work surface to reveal geophysical properties reflected by electromagnetic waves in the target area (and periphery), so that to quickly find and determine mineralization structure systems below the cover. This method was applied to a copper multi-metal mineral occurrence in the southwest segment of the Greater Hingan Mountains. The results of VLF-EM measurement show that there are two clear VLF-EM anomalies inside the study area, which implies that this mineral occurrence has a good metallogenic prospect. By means of exploration data processing, combined with pertinence geology study, it is confirmed that the VLF-EM method can disclose the occurrence of anomaly bodies and determine the place and distribution of ore bodies in the regions with appropriate geology and geophysics conditions. The VLF-EM method is an effective technique for the exploration of hidden and semi-hidden mineral deposits. |
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