| 程华,李水平,白德胜,曹杰,孙进,谢彦军,荆鹏,宋永利.河南省嵩县九仗沟—东湾金矿区深部地球物理特征与找矿预测[J].矿产勘查,2024,15(4):600-611 |
| 河南省嵩县九仗沟—东湾金矿区深部地球物理特征与找矿预测 |
| Deep geophysical characteristics and prospecting prediction of Jiuzhanggou-Dongwan gold mining area， Songxian County， Henan Province |
| 投稿时间：2023-03-14 修订日期：2023-07-10 |
| DOI：10.20008/j.kckc.202404010 |
| 中文关键词: 深部地球物理探测 断裂构造 找矿预测 九仗沟—东湾矿区 河南省 |
| 英文关键词: deep geophysical exploration fault prospecting prediction Jiuzhanggou-Dongwan mining area Henan Province |
| 基金项目:本文受河南省地矿局财政规划地质科研项目（豫地矿勘查〔2022〕04号）资助。 |
|
| 摘要点击次数: 1110 |
| 全文下载次数: 297 |
| 中文摘要: |
| 深部金属矿探测是目前资源勘查的重要课题和方向，地球物理方法探测深度大、分辨率高，是深部金属矿探测最有效的手段之一。河南省嵩县九仗沟—东湾矿区处于熊耳山—外方山矿集区内的蛮峪—店房金矿带之北段，目前九仗沟—东湾矿区已发现的金矿床主要为500 m以浅深度，深部（500～2000 m）找矿勘查工作基本为空白。为了查明九仗沟—东湾矿区深、边部成矿潜力，实现接替资源找矿突破，在九仗沟—东湾矿区主矿段南北两端延伸方向上，布设EH-4双源大地电磁测深和大功率激电测深剖面。以九仗沟—东湾金矿床为背景，在分析地质背景、岩石物理性质基础上，综合区域重磁资料、物探剖面反演结果，分析各物探方法异常特征，厘清了研究区内与金矿有关的F1构造破碎蚀变带深部空间分布特征等信息，揭示了研究区内深部F1构造带附近的中低电阻、高极化区为找矿有利部位，根据此特征在500～2000 m深度范围内确定了4个深部预测找矿靶区，为下一步找矿勘查提供了相关依据。研究方法和成果为区域上开展同类型金矿床的深部找矿工作提供了思路和方向，具有重要的指导和实践意义。 |
| 英文摘要: |
| Deep exploration of metal ore has attracted widespread interests in the field of resource exploration and the exploration results achieved by geophysical methods have large depth and high resolution. Geophysical methods are one of the most effective methods for deep exploration of metal ore. Jiuzhanggou-Dongwan mining area in Songxian County， Henan Province is located in the northern section of the Manyu-Dianfang gold belt in the Xiong'er mountain-Waifangshan mining cluster. The gold deposits found in the Jiuzhanggou-Dongwan mining area are mainly shallow depths of 500 m and it has not been investigated to explore more deep （500~2000 m） meta ore. In order to identify the potential of the deep and marginal parts of the Jiuzhanggou-Dongwan mining area， EH-4 dual-source geodetic electromagnetic bathymetry and high-power excitation bathymetry profiles were laid in the direction of the extension of the north and south ends of the main ore section of the Jiuzhanggou-Dongwan mining area. Considering the Jiuzhanggou-Dongwan gold deposit， the abnormal characteristics of each geophysical method were analyzed by integrating regional heavy magnetic data and geophysical profile inversion results based on the analysis of geological background and petrophysical properties. This paper clarifies the deep spatial distribution characteristics of F1 tectonic fracture alteration zone related to gold deposits in the study area. The medium and low resistivity and high polarization zone near the deep F1 tectonic zone in the study area were revealed as favorable parts for prospecting. Four deep predictive prospecting targets were determined in the depth range of 500~2000 m according to the above feature. It provides a relevant basis for the next step of prospecting and exploration. The research methods can also be used for the deep prospecting of the same type of gold deposits， which has important guidance and practical significance. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |