Abstract: The magnetotelluric soundings reveal the existence of high conductivity layer in the middle crust and upper mantle in certain regions of North China and Northwest China. It has an important significance for studying the structures within crust and upper mantle, physical state of rocks, crustal seismicity and so on. This paper summarizes all the data of highly electrical conductivity layers in these regions and describes their distribution regularity and their conicidence with the tectonic characteristics and the temperature, gravity and wave velocity fields. Finally, the genetic mechanism of these layers and its relation to the continental shallow shocks are briefly discussed herein.

摘要： 本文根据大地电磁测深方法的探测,发现地壳和上地幔内存在几-几十欧姆·米的低阻层(高导层)事实,探讨高导层的分布特点与大地构造特征,高导层与其它地球物理场,高导层的成因机制及其与大陆浅源地震之间的关系。