中国地质调查2025，Vol.12Issue(3)：37-44,8.DOI:10.19388/j.zgdzdc.2024.213
综合电(磁)法在内蒙古希热哈达勘查区金多金属矿勘查的应用
Application of comprehensive electric(magnetic)method in the exploration of gold polymetallic deposits in Xirehada exploration area of Inner Mongolia
摘要
Abstract
Xirehada exploration area in Beishan of Inner Mongolia has great potential for gold polymetallic deposit prospecting.In order to identify the distribution characteristics of ore controlling elements such as geological struc-ture framework,faults,and rock masses in the area,and better guide the detailed survey work and delineate the prospecting target area,the authors applied comprehensive electrical(magnetic)methods such as induced polari-zation middle gradient,induced polarization sounding,and audio magnetotelluric sounding in the study area.The research results show that the anomalous features of the induced polarization gradient reflected the existence of four NWW oriented fault structures F1,F2,F3,and F4,and three related anomaly areas IP1,IP2,and IP3 were de-lineated.The anomalous features of the audio magnetotelluric sounding reflected the spatial distribution character-istics of the fault structures F1,F2,and F3 dipping to the northeast,and F4 dipping to the southwest.The in-duced polarization sounding further reflected the occurrence of the fault structure F3 and the burial depth charac-teristics of the favorable mineralization area.After verification by the trench engineering,a gold vein was identi-fied in IP2 anomaly area,and good prospecting results were achieved.A set of electric(magnetic)exploration methods for thick coverage areas was established,providing references for conducting induced polarization soun-ding in shallow saltpeter layers.The deep distribution characteristics of structures and ore bodies can be roughly inferred by comprehensive application of multiple geophysical methods.Meanwhile,the favorable areas for miner-al exploration were also reduced,providing basis for the geological drilling work in the future.关键词
激电中梯/激电测深/音频大地电磁测深/视电阻率/深部地质特征解译Key words
induced polarization middle graident/induced polarization sounding/audio magnetotelluric sounding/apparent resistivity/interpretation of deep geological features分类
天文与地球科学引用本文复制引用
陈强林,李怀远,吴文贤,胡俊峰..综合电(磁)法在内蒙古希热哈达勘查区金多金属矿勘查的应用[J].中国地质调查,2025,12(3):37-44,8.基金项目
中国地质调查局项目"战略性矿产勘查物探技术支撑(军民融合中心)(编号:DD20243091)"项目资助. （军民融合中心）
