地学前缘 ›› 2025, Vol. 32 ›› Issue (2): 357-370.DOI: 10.13745/j.esf.sf.2023.11.63

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河南桐柏围山城地区金矿找矿预测综合信息模型构建与靶区预测

张晓飞1,2(), 唐相伟3,*(), 庞振山1,2, 薛建玲1,2, 陈辉1,2, 王珺璐1,2, 隗含涛1,2, 雷晓力1,2   

  1. 1.中国地质调查局发展研究中心, 北京 100037
    2.自然资源部矿产勘查技术指导中心, 北京 100037
    3.河南省地质矿产勘查开发局第三地质矿产调查院, 河南 郑州 450000
  • 收稿日期:2023-09-12 修回日期:2023-11-07 出版日期:2025-03-25 发布日期:2025-03-25
  • 通信作者: *唐相伟(1982—),男,硕士,高级工程师,主要从事地质矿产勘查工作。E-mail: 48901860@qq.com
  • 作者简介:张晓飞(1985—),男,博士,高级工程师,主要从事区域地质矿产调查与找矿预测研究工作。E-mail: zhangxiaofei521125@163.com
  • 基金资助:
    中国地质调查局地质调查项目(DD20230355);中国地质调查局地质调查项目(DD20230356);中国地质调查局地质调查项目(DD20190570);国家自然科学基金项目(41802222);国家自然科学基金项目(42002102)

Comprehensive information model construction and target area prediction for gold prospecting in the Weishancheng area, Tongbai County, Henan

ZHANG Xiaofei1,2(), TANG Xiangwei3,*(), PANG Zhenshan1,2, XUE Jianling1,2, CHEN Hui1,2, WANG Junlu1,2, WEI Hantao1,2, LEI Xiaoli1,2   

  1. 1. Development and Research Centre, China Geological Survey, Beijing 100037, China
    2. Mineral Exploration Technical Guidance Center, Ministry of Natural Resources, Beijing 100037, China
    3. Third Institute of Geological and Mineral Exploration, Bureau of Geology and Mineral Exploration and Development of Henan Province, Zhengzhou 450000, China
  • Received:2023-09-12 Revised:2023-11-07 Online:2025-03-25 Published:2025-03-25

摘要:

寻找和发现隐伏矿和深部矿是矿产勘查界的科学前沿和研究热点。大比例尺找矿预测研究直接服务于矿产勘查工作,是实现科学找矿的重要途径。本文以成矿地质体找矿预测理论和方法为指导,以银洞坡金矿为重点研究对象,在系统梳理总结前人研究成果的基础上,构建以成矿地质体、成矿构造与成矿结构面和成矿作用特征标志为主要内容的找矿预测地质模型,以期为区域内金多金属矿大比例尺找矿预测工作提供思路和示范。本文厘定银洞坡金矿为与侵入岩浆地质作用有关的岩浆热液型矿床。成矿地质体为早白垩世中酸性隐伏岩体。成矿构造主要为褶皱成矿构造系统,成矿结构面主要为岩性界面(硅钙面)、褶皱成矿构造系统结构面或可能存在侵入成矿构造系统结构面。成矿作用宏观蚀变特征标志主要为硅化和黄铁绢英岩化,成矿元素形成近程Pb、Zn和Ag矿化,伴生Au矿化,远程Au矿化,伴生Pb、Zn和Ag矿化的分带特征。结合物化探等信息,建立了银洞坡金矿找矿预测综合信息模型,在围山城地区圈定找矿靶区5处,经钻探验证,取得找矿突破。

关键词: 银洞坡金矿, 岩浆热液, 成矿地质体, 找矿预测, 地质模型

Abstract:

The exploration and discovery of hidden and deep ore deposits represent a scientific frontier and a key research focus in the field of mineral exploration. Large-scale prospecting prediction is a critical approach to achieving scientific prospecting and directly supports mineral exploration efforts. Guided by the prospecting prediction theory and methodology of metallogenic geological bodies, this study focuses on the Yindongpo gold deposit as the primary research object. Building on a systematic review of previous research, a geological model for ore-prospecting prediction is constructed, emphasizing metallogenic geological bodies, metallogenic structures, metallogenic structural planes, and metallogenic characteristics. This model aims to provide a framework and demonstration for large-scale gold-polymetallic ore prediction in the region. The Yindongpo gold deposit is identified as a magmatic hydrothermal deposit associated with intrusive magmatic activity. The metallogenic geological body is a medium-acid concealed rock mass formed during the Early Cretaceous. The metallogenic structure is primarily a fold-related metallogenic structural system, while the metallogenic structural planes include lithologic interfaces (e.g., silica-calcium planes), fold-related structural planes, and potentially intrusive-related structural planes. The macro-alteration features of mineralization are dominated by silicification and pyrite-sericitization. Metallogenic elements exhibit near-range Pb, Zn, and Ag mineralization associated with Au, and remote Au mineralization associated with Pb, Zn, and Ag. By integrating geophysical and geochemical exploration data, a comprehensive information model for ore-prospecting prediction was developed. Five prospecting target areas were delineated, and subsequent drilling verification resulted in significant prospecting breakthroughs.

Key words: Yindongpo gold deposit, magmatic hydrothermal system, metallogenic geological body, prospecting prediction, geological model

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