Exploration on Lintong-Chang’an Fault for Its Activities since Quaternary Period
详细信息
- 责任者：Li Xiaoni (Earthquake Administration of Shanxi Province ; Xi’an 710068 ; China) ; Feng Xijie
- 刊名：Northwestern Seismological Journal
- 出版年：2012
- 卷期：34(4)
- 关键词：活动断层 ; active faults ; 陕西 ; Shaanxi Province
- 页码：p.398-404
- 图表：3 illus., 1 table, 24 refs.
- 分类号：0300
- issnNo：ISSN1000-0844
- isbnNo：CN62-1048/P
摘要
Lintong-Chang’an fault is an important active fault near Xi’an City. In this paper, the activity of the fault is discussed by using high-resolution shallow seismic reflection, composite drilling and dating methods. The result shows that some layers in Quaternary were offseted and the dislocated distances decrease from deep layer to upper one,means a continual longtime active of the fault.The geological sections of composite drilling shows that sand and clay layers of Middle Plaistocene were cut and the displacements are in 8.7～2.5 m. All of this prove that active rate of the fault decreased from Early to Late Pleistocene Epoch.