• 责任者：Li Hongqiang (Lithosphere Research Center ; Institute of Geology ; CAGS ; Beijing 100037 ; China) ; Gao Rui
• 刊名：Chinese Journal of Geophysics
• 出版年：2013
• 卷期：56(11)
• 关键词：深地震测深 ; deep seismic sounding ; 莫霍间断面 ; Mohorovicic discontinuity ; 六盘山 ; Liupan Mountains
• 页码：p.3811-3818
• 图表：5 illus., 16 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

     Based on near-vertical reflection principle and the low frequency characteristics of the data, the Moho depth variation along the survey line across Liupanshan Mountain was observed by using deep seismic reflection. For obtaining the profile, a series of processing techniques including both pre-stack and post-stack have been used, such as statics, denoising, stack in common receiver domain and so on. There are both undulating and offsets of the depth of Moho along the survey. The depth of Moho beneath the Ordos block, which lies to the east of Liupanshan Mountain, becomes deeper from east to west with gentle undulations. The offset of Moho close to the eastern frontier of the Liupanshan Mountain may be caused by the strike- slipping of the crust. The depth of Moho beneath the northeastern margin of Qinghai-Xizang plateau becomes deeper from west to east and indicates the features caused by convergence and shortening in this area. The complex structure of Moho along the survey revealed the characteristics of compressing from two opposite sides followed by lateral strike-slipping of the crust.