Abstract: The Geoscience Transect passes through the China-Kroea Platform and its southern and northern borders in the southeast-northwest direction from Xiangshui, Jiangsu to Modula, Nei Mongol. This paper deals with the result of seismic refraction sounding along the geoscience transect. In combination with a part of magnetotelluric sounding, gravity and magnetic data, the crustal structure, tectonic features and the dynamic process of evolution of eight geotectonic units on the transect are revealed rerpectively. The deep structural background for the seismic activity along the transect is also discussed in this paper.

Key words: Seismic refraction sounding, Low-velocity zone, Jiangsu, Nei Mongol, Crust-mantle transition zone, China-Korea Platform

摘要： 江苏响水—内蒙古满都拉地学断面呈东南—西北向斜跨中朝地台及其南北两缘。本文是论述断面的地震折射测深结果,结合部分大地电磁测深和重、磁资料,对断面通过的八个地质构造单元,分别阐述它们的地壳结构、构造特征及其动力学演化过程。并同时探讨了沿断面区域的地震活动的深部结构、构造背景。

关键词: 地震折射测量, 低速度带, 江苏, 内蒙古, 壳慢过渡带, 中朝地台