时间域瞬变电磁法重叠回线装置剖面测量异常表示和判读

用时间域瞬变电磁法重叠回线装置剖面测量，具有较大的探测深度和较强的分辨能力，在高阻围岩条件下几乎没有地形引起的假异常，在电阻率相对于围岩较低的隐伏金属矿体中可探测到明显的V／I高值异常，是一种有效的物探方法，但对异常的表示和场源体的判读需要不断深化，结合黔西北赫章县地区亚都隐伏铅锌矿的TEM勘查实例，对异常的表示和判读进行了探讨和总结。

The Study of Anomaly Representation and Interpretation Problem with Overlapped Loop System Profiling Survey of Time Domain Transient Electromagnetic Method

Overlapped loop system profiling survey of time domain transient electromagnetic method is adopted to have a strong detection in depth and a high resolution. It almost did not have false anomaly induced by terrain under the condition of high resolution surround- ing rock. We can detect obvious VII high value anomaly on buried metal ore--body, which has low resistance compared with surrounding rock. It is an effective geophysical method. But it must be deepened on anomaly representation and interpretation of source body. This paper summarizes the experience and introduces anomaly representation and interpretation with TEM exploration case history of Yadu buried lead and zinc deposit in northwest of Guizhou.