Characteristics of Tectonic Deformation and Mechanisms for the Active Maxianshan-Xinglongshan Fault System in the Lanzhou Area

作     者：Yuan Daoyang, Liu Xiaofeng, Zheng Wenjun, Liu Xiaolong and Liu BaichiLanzhou Institute of Seismology, China Seismological Bureau, Lanzou 730000, China 

作者机构：Lanzhou Institute of Seismology China Seismological Bureau Lanzou 730000 China 

出 版 物：《Earthquake Research in China》 (中国地震研究（英文版）)

年 卷 期：2003年第17卷第4期

页      面：315-323页

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：TheresearchprojectisoneoftheStateKeyBasicResearchandDevelopmentProgram (G19980 4 0 70 1 0 4 )andoneofKeyResearchProjectsduringthe 9thFive YearPlanofGansuProvince .ContributionNo .LC2 0 0 30 0 2  LanzhouInstituteofSeismology  ChinaSeismologicalBureau 

主　　题：Lanzhou Maxianshan-Xinglongshan mountains Active fault system Tectonic deformation 

摘      要：A detailed investigation permitted us to obtain quantitative data concerning fine geometric structures of 4 faults of the active Maxianshan-Xinglongshan fault system and the latest movement along them. Of them the northern Maxianshan border fault is a large-scale, strongly active Holocene reverse sinistral strike-slip fault, the other 3 faults, the southern Maxianshan border fault and the southern Xinglongshan border and the northern Xinglongshan border faults are the accompanying active late-Pleistocene thrust faults, which are incorporated into the main strike-slip fault, the northern Maxianshan border fault at depth. It is the most important earthquake-controlling fault in the Lanzhou area, the fault influences and constrains the seismic activity in the area.