地质通报2025，Vol.44Issue(9)：1662-1672,11.DOI:10.12097/gbc.2024.07.033
胶西北石墨矿覆盖区金矿综合物探找矿方法和应用效果
Comprehensive geophysical exploration methods and application effects for gold deposits in the graphite covered area of Northwest Jiaodong
摘要
Abstract
[Objective]Zhaoping metallogenic belt is an important ore conducting structure in the northwestern region of Jiaodong,with superior geological conditions for mineralization.In the Nanshu area of the Zhaoping metallogenic belt,gold deposits are hidden beneath graphite deposits.Due to the extremely low electrical resistivity of graphite deposits,some electromagnetic signals from electromagnetic methods are shielded from penetrating downwards,resulting in electromagnetic signals stopping at the graphite deposit site and making it impossible to detect gold deposits hidden beneath graphite deposits.In order to clarify the deep occurrence and mineralization characteristics of the gold deposits in Nanshu area and better guide the next step of gold exploration in the area,feasible and effective geophysical exploration methods need to be selected.[Methods]This article aims to comprehensively analyze and study deep gold deposits in graphite ore extremely low resistance shielding areas through the use of conventional gravity magnetic method and new technologies such as wide area electromagnetic method,microseismic natural source surface wave method,and spectral induced polarization method.[Results]A comprehensive geophysical fine prospecting method for gold deposits in graphite ore-covered areas was optimized.The planar and deep spatial distribution characteristics of the Zhaoping metallogenic belt from the perspective of multi-source data fusion were determined,and the locations of induced polarization anomalies for gold deposits were delineated.[Conclusions]Through drilling and analysis,the accuracy of the inferred location of the gold induced polarization anomaly has been verified,achieving a new breakthrough in deep mineral exploration in extremely low resistance shielding areas.关键词
招平成矿带/金矿/南墅地区/极低阻屏蔽区/综合物探/矿产勘查工程/胶西北Key words
Zhaoping metallogenic belt/gold mine/Nanshu/extremely low-resistance shielding area/comprehensive geophysical exploration/mineral exploration engineering/Northwest Jiaodong分类
天文与地球科学引用本文复制引用
郭国强,胡东宁,方磊,刘维涛,刘锋,陈治国,姚铮,王润生,王冉,陈方博,高晓丰,张大明..胶西北石墨矿覆盖区金矿综合物探找矿方法和应用效果[J].地质通报,2025,44(9):1662-1672,11.基金项目
山东省重点研发计划项目《金属深部协同探测技术装备》(编号:2023CXGC011001)、山东省省级地质勘查项目《招平带金矿资源潜力调查及深部远景预测研究》(编号:鲁勘字(2016)73号)、《山东省莱州市朱桥地区可控源音频大地电磁测深勘查》(编号:鲁勘字(2012)12号)、《胶东金矿深部协同三维精细探测技术研究与找矿预测》(编号:鲁勘字(2024)68号) Supported by Shandong Provincial Key Research and Development Program Project(No.2023CXGC011001)and Shandong Provincial Geological Exploration Projects(Nos.Lukanzi(2016)73,Lukanzi(2012)12,Lukanzi(2024)68) （编号:2023CXGC011001）
