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

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