| 张月峰,胥燕辉,潘北斗,刘晓波,付雪明.草原覆盖区银多金属矿床综合地球物理勘探方法研究[J].矿产勘查,2025,16(12):2606-2613 |
| 草原覆盖区银多金属矿床综合地球物理勘探方法研究 |
| Comprehensive geophysical exploration methods of Ag-polymetallic deposit in grassland-covered area |
| 投稿时间：2024-02-21 |
| DOI：10.20008/j.kckc.202512007 |
| 中文关键词: 草原覆盖区 地球物理勘探 银多金属矿 找矿标志 东乌旗 |
| 英文关键词: grassland-covered area geophysical exploration Ag-polymetallic prospecting criteria East Ujimqin |
| 基金项目:本文受大兴安岭成矿带成果集成及成矿预测研究项目(CMGB202002)资助。 |
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| 中文摘要: |
| 东乌旗地区地处内蒙古草原腹地，花脑特银多金属矿床是东乌旗地区具有代表性的大型银多金属矿床，为典型的盲矿床。深入探讨地球物理勘探方法在草原覆盖区的应用效果，可以有效支撑该区多金属矿进 一步找矿突破。基于此，本文重点针对花脑特银矿床，对比区域航磁、重力调查成果，认为低布格重力异 常、低正航磁异常及其梯度变化带位置，与多金属矿床对应较好。利用高精度磁法测量、激电中梯测量、 三极测深测量等成果与工程验证结果进行对比研究，磁异常及激电异常能够准确反映矿化蚀变地质体的 赋存位置，其中低正磁异常、地面激电高阻体及激电测深梯度带是多金属矿找矿的有利区域，磁法测量、电法测量是东乌旗等草原覆盖区寻找银多金属矿的有效方法组合。 |
| 英文摘要: |
| Located in the hinterland of the Inner Mongolia grassland, the Huanaote Ag-polymetallic deposit isa representative large-scale blind Ag-polymetallic deposit in the East Ujimqin Banner area. An in-depth discus-sion on the application effects of geophysical prospecting methods in grassland-covered areas can effectively sup-port further prospecting breakthroughs for polymetallic deposits in this region. Based on this, this paper focuses onthe Huanaote Ag-polymetallic deposit and compares the results of regional aeromagnetic and gravity surveys, con cluding that the locations of low Bouguer gravity anomalies, low positive aeromagnetic anomalies and their gradientzones show a good correspondence with polymetallic deposits. A comparative study was conducted between the re-sults of high-precision magnetic survey, induced polarization mid-gradient survey, three-pole sounding survey andengineering verification results. The magnetic anomalies and induced polarization anomalies can accurately reflectthe occurrence positions of mineralized altered geological bodies. Among them, low positive magnetic anomalies,ground induced polarization high-resistivity bodies and induced polarization sounding gradient zones are favorableareas for polymetallic ore prospecting. Magnetic survey and electrical survey are an effective method combinationfor exploring Ag-polymetallic deposits in grassland-covered areas such as East Ujimqin Banner. |
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