地学前缘 ›› 2025, Vol. 32 ›› Issue (4): 213-221.DOI: 10.13745/j.esf.sf.2025.4.57

• 智能地质填图 • 上一篇    下一篇

综合多源数据的蚀变矿物填图及其地质应用:以内蒙古新忽热地区为例

王瑶1,2(), 肖克炎1,2,*(), 唐瑞1,2, 李程1, 孔韫辉1   

  1. 1.成都理工大学 数学地质四川省重点实验室, 四川 成都 610059
    2.中国地质科学院 矿产资源研究所, 北京 100037
  • 收稿日期:2024-11-30 修回日期:2025-04-21 出版日期:2025-07-25 发布日期:2025-08-04
  • 通信作者: *肖克炎(1963—),男,研究员,长期从事矿产资源潜力评价和深部成矿预测研究。E-mail: kyanxiao@sohu.com
  • 作者简介:王 瑶(1994—),女,博士研究生,地质学专业,主要从事遥感矿产预测研究。E-mail: wywyao24@163.com
  • 基金资助:
    国家重点研发计划项目(2023YFC2906403);中国地质调查局地质调查项目(DD20243233)

Integrated multi-source data-driven alteration mineral mapping and its geological applications: A case study in the Xinhure area, Inner Mongolia

WANG Yao1,2(), XIAO Keyan1,2,*(), TANG Rui1,2, LI Cheng1, KONG Yunhui1   

  1. 1. Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China
    2. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
  • Received:2024-11-30 Revised:2025-04-21 Online:2025-07-25 Published:2025-08-04

摘要:

部分地形复杂的区域可以利用遥感技术进行矿产资源勘探。高光谱遥感技术具有高光谱分辨率和丰富的空间信息,可以有效地识别这些区域的地质特征和矿化异常信息,并广泛应用于地质填图和找矿。随着中国航天事业高质量发展,GF-5高光谱数据已用于蚀变矿物的精细识别,可结合多源信息评价相关研究区域的找矿潜力。本研究针对内蒙古新忽热地区浩尧尔忽洞金矿周围区域,利用GF-5高光谱数据进行蚀变矿物信息提取与分析,采用两种类间距离方法选择参考端员光谱,通过传统的光谱角匹配(SAM)方法完成蚀变信息填图。综合分析了岩性-构造-蚀变多源地学要素,形成蚀变矿物多源地学信息综合图。本研究成功提取出8种蚀变矿物,分别为高岭石、白云母、蒙脱石、明矾石、赤铁矿、钛铁矿、针铁矿、方解石,并绘制蚀变矿物分布图。将遥感蚀变信息与研究区现有典型矿区进行类比分析,进而验证了遥感蚀变信息在地质找矿上的适用性。综上所述,多源数据在蚀变矿物填图方面更具经济实用性,可为潜在成矿区找矿工作提供指导和参考。

关键词: 多源地学信息融合, GF-5, 蚀变矿物填图, 光谱优选

Abstract:

For regions with complex terrain, remote sensing technology can be utilized for mineral resource exploration. Hyperspectral remote sensing technology, characterized by high spectral resolution and rich spatial information, enables effective identification of geological features and mineralization anomalies in these areas, and has been widely applied in geological mapping and mineral prospecting. With the high-quality development of China’s aerospace industry, GF-5 hyperspectral data have been employed for the precise identification of alteration minerals. By integrating multi-source information, this approach facilitates the evaluation of prospecting potential in target regions. This study focuses on the area surrounding the Haoyao’erhudong gold deposit in Xinhure area, Inner Mongolia Autonomous Region. GF-5 hyperspectral data were used for alteration mineral information extraction and analysis. Two inter-class distance methods were adopted to select reference endmember spectra, and the traditional Spectral Angle Mapper (SAM) method was applied to complete alteration information mapping. A comprehensive analysis of lithology-structure-alteration multi-source geoscientific elements was conducted to generate an integrated map of alteration minerals. The study successfully extracted eight alteration minerals: kaolinite, muscovite, montmorillonite, alunite, hematite, ilmenite, goethite, and calcite, with corresponding distribution maps created. Comparative analysis between remotely sensed alteration information and existing typical mining zones in the study area validated the applicability of remote sensing-derived alteration data in geological prospecting. In conclusion, multi-source data integration demonstrates enhanced economic practicality in alteration mineral mapping, providing critical guidance and references for identifying potential mineralization zones.

Key words: multi-source geoscientific integration, GF-5, alteration mineral mapping, spectral optimization selection

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