| 航空瞬变电磁法在新疆黄土坡铜锌多金属矿区的应用 |
| 投稿时间：2024-04-17 修订日期：2024-10-24 点此下载全文 |
| 引用本文：陈 伟.航空瞬变电磁法在新疆黄土坡铜锌多金属矿区的应用[J].地质与勘探,2025,61(1):120-127 |
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| 基金项目:河北省航空探测与遥感重点实验室“航电异常智能识别技术研究项目”（编号：246790127H）资助 |
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| 中文摘要:为探索航空瞬变电磁测量在新疆黄土坡铜锌多金属矿区的探测效果，基于矿区矿化岩石和围岩间存在明显的电性差异，在该区开展了1:10000航空瞬变电磁测量，查明了矿区范围内600 m以浅不同电性地质层（体）的空间分布规律，分析了航空瞬变电磁反演电阻率特征与已知矿体之间的关系。结果表明，航空瞬变电磁测量结果与已知矿吻合较好，在已知块状铜矿体位置，反演电阻率表现为明显的低阻特征，矿体最厚处与反演电阻率断面图中电阻率最低值的位置相对应。在已知网脉状、浸染状铜锌矿体位置，反演电阻率表现为中-高阻特征，矿体多位于反演电阻率断面图的电阻率过渡带上。根据已知矿的航空瞬变电磁响应特征，圈定找矿有利区3处，均为寻找火山沉积硫化物型铜锌矿床的有利地段。本次研究为新疆黄土坡地区寻找同类铜锌多金属矿产提供了一种高效的技术方法。 |
| 中文关键词:航空瞬变电磁法 电阻率 铜锌多金属矿 找矿有利区 黄土坡 新疆 |
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| Application of the airborne transient electromagnetic method in the Huangtupo copper-zinc polymetallic deposit of Xinjiang |
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| Abstract:This work aims to explore the detection effectiveness of airborne transient electromagnetic (ATEM) measurements in the Huangtupo copper-zinc polymetallic deposit of Xinjiang. A 1:10000 ATEM survey was conducted in this deposit based on the significant electrical differences between the mineralized rocks and host rocks. The spatial distribution patterns of different electrical geological layers within 600 m depth in the mining area were identified, and the relationship between the inversion resistivity characteristics and the known ore bodies was analyzed. Results indicate that the ATEM measurement results are in good agreement with the known ore bodies. At the location of known massive copper ore body, the inversion resistivity was distinctly low, and the thickest part of the ore bodies corresponded to the lowest resistivity part in the inversion resistivity cross-section. At the location of known veinlet and disseminated copper-zinc ore bodies, the inversion resistivity was medium to high, with the ore bodies mostly located on the transitional resistivity zones. Combined with the ATEM response characteristics of the known ores, three favorable mineral exploration areas were delineated, which are favorable for searching for volcanic sedimentary sulfide type copper-zinc deposits. This study provides an efficient technical method for discovering similar copper-zinc polymetallic ores in the Huangtupo area of Xinjiang. |
| keywords:airborne transient electromagnetic method, inversion resistivity, copper-zinc polymetallic ore, favorable mineral exploration area, Huangtupo, Xinjiang |
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