The Deep Structure of the Western Boundary Belt of the Songliao Basin
详细信息
- 责任者：Liu Cai (Geo-Exploration Science and Technology Institute ; Jilin University ; Changchun 130026 ; China) ; Yang Baojun
- 刊名：Chinese Journal of Geophysics
- 出版年：2011
- 卷期：54(2)
- 关键词：深部构造 ; deep-seated structure ; 大地电磁测深 ; telluric electromagnetic sounding ; 松辽平原 ; Songliao Plain
- 页码：p.401-406
- 图表：4 illus., 30 refs.
- 分类号：1600
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Based on the understanding obtained from the wide-angle seismic velocity distribution, this paper uses the 2D geoelectrical distribution along a section (about 470 km, 42 survey points) of magnetotelluric sounding carried out near the western boundary of Songliao Basin to describe the detailed deep structure feature of the west boundary. Compared with the Manzhouli-Suifenhe geoscience transect, the similar result is that the fault structure of the west boundary shows that the Nenjiang fault as the west boundary of the basin stacks together with the Heihe-Hegenshan suture zone near the earth’s surface, and the two faults separate down several kilometers, and the fault of the suture zone tends to the west through the crust, but the Nenjiang fault tends to the east and is perhaps within the crust. The established geological-geophysical interpretation model provides the feasible geological construction process of the western boundary.