综合物探方法在黄土梁金矿外围找矿中的应用
DOI:
作者:
作者单位:

河北省地质调查院

作者简介:

通讯作者:

中图分类号:

基金项目:


Applicability Eevaluation of Ccomprehensive Ggeophysical Pprospecting Mmethods for Ggold Eexploration in Huangtuliang
Author:
Affiliation:

Hebei Institute of Geological Survey

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    黄土梁金矿是我国冀西北地区重要的蚀变岩型金矿床,赋矿围岩为海西晚期正长岩,受近东西向构造控制,其外围具有良好的成矿地质条件。在外围地区开展了高精度磁法、激电测深和AMT测量。结果表明,高精度磁法对构造带的识别效果显著,往往呈现尖峰状低磁异常;激电测深对角闪斜长变粒岩、斑状花岗岩、蚀变岩与正长岩的识别效果良好,蚀变岩呈现低阻、中高极化、中低磁性的特征,易于区分,对寻找金矿体具有重要指导意义;AMT对断裂带的识别效果较好,断裂带往往位于视电阻率梯度带附近。在此基础上,建立了黄土梁式金矿的地球物理找矿方法组合——高精度磁法测量+激电测深+AMT(CSAMT),及黄土梁式金矿床的地球物理找矿模型,为本区同类型矿床勘查提供了借鉴。

    Abstract:

    The Huangtuliang gold deposit is an important altered rock-type gold deposit in northwestern Hebei Province, China. The host rock is late Hercynian syenite, controlled by near-east-west trending structures, and the surrounding area has favorable metallogenic geological conditions. High-precision magnetic surveys, induced polarization (IP) sounding, and audio-frequency magnetotelluric (AMT) measurements were conducted in the surrounding area.The results show that the high-precision magnetic method has a significant effect on identifying structural zones, which often present spiky low magnetic anomalies; induced polarization sounding has a good effect on distinguishing amphibole plagioclase leptynite, porphyritic granite, altered rocks and syenite. Altered rocks show the characteristics of low resistivity, medium-high polarization and medium-low magnetism, which are easy to differentiate, and have important significance for prospecting gold ore bodies;Audio Magnetotellurics has a good performance in identifying fault zones, which are usually located near the apparent resistivity gradient zones. Based on these findings, a combination of geophysical prospecting methods for the Huangtuliang gold deposit was established, which included high-precision magnetic survey、induced polarization method and AMT (CSAMT). At the same time, a geophysical mineral exploration model for Huangtuliang-type gold deposit were established, providing a reference for the exploration of similar deposits in this region.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2025-11-03
  • 最后修改日期:2026-01-17
  • 录用日期:2026-02-06
  • 在线发布日期:
  • 出版日期: