摘要
介绍了广域电磁法的基本原理、特点及广域视电阻率的定义。在内蒙古自治区某银铅锌矿进行了实验勘探工作,解释和推断了地电异常,并和可控源音频大地电磁法的效果进行了对比。研究结果表明:广域电磁法可以用较小的发收距获得较大的探测深度,勘探效率和精度较高,用于寻找深部金属矿的效果明显。
This paper describes the basic principles and characteristics of the wider field electromagnetic method and the definition of apparent resistivity of the wider field.Exploration work was carried out in a silver,lead and zinc ore deposit of Inner Mongolia,including the deduction and interpretation of the anomaly.The result compared with CSAMT shows that the wider field electromagnetic method can achieve a larger exploration depth as well as higher exploration efficiency and precision with a smaller distance between transmitting and receiving.Hence the method has obvious effect in search for deep metallic ore deposits.
出处
《物探与化探》
CAS
CSCD
北大核心
2011年第6期743-746,共4页
Geophysical and Geochemical Exploration
基金
国家自然科学基金项目(40827002)
关键词
广域视电阻率
广域电磁法
深部找矿
银铅锌矿
wide field electromagnetic apparent resistivity
wide field electromagnetic method
deep prospecting
silver
lead and zinc ore deposit
