摘要
EH4电导率成像系统是音频大地电磁探测系统之一,该方法多应用于大地构造、石油、水文、地热和工程等领域,在金属矿找矿领域中应用尚不成熟。本文概述了EH4电导率成像系统的方法原理、数据采集和后期数据处理方法。用该测量系统对西藏山南和新疆阿勒泰两个铜矿区的岩性、构造、含矿地质体位置进行了解释,其结果与钻探结果基本吻合。尤其是对于新疆铜矿区规模较小的矿体赋存位置-断裂破碎带,EH4系统能够对此有很好的解释,说明EH4测量系统是金属矿找矿的一种有效的方法。
The EH4 electrical conductivity imaging system, which is one of the Audio-frequency Magnetotellurics systems, has been widely applied some fields such as geotectonic study, petroleum, hydrology, geothermal and engineering, while less in the work of metal ore search. This paper presents briefly the method principle,data acquisition and data processing method of this system. It has been applied to two cooper districts in Shannan Prefecture of Tibet and Ahay Prefecture of Xinjiang to interpret their lithology, structure and locations of ore-bearing geological bodies,which are largely in accordance with drilling results. Especially for smaller copper mining area in Ahay Prefecture of Xinjiang orebody occurrence location-fractured zone, EH4 system can have a good explanation. It shows that the EH4 measurement system is an effective method for metal ore prospecting.
出处
《地质与勘探》
CAS
CSCD
北大核心
2016年第4期695-702,共8页
Geology and Exploration
基金
国家自然科学基金项目(412772366)
中国地质调查局地调项目(1212011220279)资助
关键词
EH4音频大地电磁法
数据处理
金属找矿
EH4, audio-frequency magnetotelluric method, data processing, prospecting of metallic ore
