Relationship between Detachment Surface and Seismicity in Xining Basin

详细信息   

• 责任者：Zhang Junlong (Institute of Earthquake Science ; CEA ; Beijing 100036 ; China) ; Tian Qinjian
• 刊名：Earthquake
• 出版年：2008
• 卷期：28(1)
• 关键词：平衡剖面 ; balanced cross section ; 滑脱构造 ; decollement ; 青海 ; Qinghai
• 页码：p.114-120
• 图表：4 illus., 1 table, 34 refs.
• 分类号：0500
• issnNo：ISSN1000-3274
• isbnNo：CN11-1893/P

摘要

The space features of the detachment surfaces show the tectonic connection between the shallow secondary faults and the regional deep faults. In the Xining Basin, the Tertiary stratum deformation occurs along the direction of NW under action of the regional compressional stress along the direction of NNE. The authors consider that the deformation pattern of the sediment cover in the basin is mainly folded, and surges along the bottom of the sediment cover. Based on the analysis above, it is concluded that the shallow detachment surfaces in Xining Basin has no background for the strong shock occurrence.