大地电磁测深法在大地构造研究中的一个应用实例

AN EXAMPLE OF APPLYING THE TELLURIC ELECTRO MAGNETIC SOUNDING IN STUDY OF TECTONIC FRAMEWORK

通过对ＨＱ—１３线（安徽灵壁—上海奉贤）大地电磁测深工作，对下扬子盆地地下电性特征进行了研究，认为该盆地具有纵向上分层和横向上分块的特点。通过对华北地台与下扬子盆地两个构造单元的电性差异，地壳结构的分析与研究，修正了郯庐断裂为分界的看法，提出了两个构造单元之间接触关系的新观点──双沟推覆带。

Studies of telluric electro magnetic sounding in HQ 13 line from Lingbi of Anhui to Fengxian of Shanghai, and of electrical property characteristics under the lower Yangtze basin were undertaken to consider that the basin is characterized by layering vertically and blocking horizontally. Based on analyses and studies of electrical property contrast and earth crust texture in the two structure units in North China platform and lower Yangtze basin,authors corrected the boundary of the Tan Lu deep fracture,and proposed a new point of view in contact relationship mappe structure belt between the two structure units.