摘要
断层泥是影响断层封闭性的主要因素之一。对正断层的形成机理进行了动力学和运动学分析,从时间和空间上探讨了正断层上、下盘的应力分布特征及其断层泥的分布规律。分析认为,断层泥受控于断层的特征规律,属于断层形成发育过程的伴生现象。而正断层的上盘为主动盘,下盘为被动盘,正断层中的断层泥则随正断层的生长表现为剪薄、拉长、涂抹和拖曳的动态发育演化过程,断层泥主要形成在正断层上盘一定宽度的范围内。
Fault gouge is one of the main influence factors to the fault sealing.Dynamics and kinematics analyses are conducted on the mechanism of normal fault formation.From the time domain and space domain,the stress distribution of upthrow and downthrow blocks and the fault gouge distribution of normal fault are discussed.The study shows that the fault gauge is controlled by the fault and associated with the fault.The upthrow block is an active block and the downthrow block is a passive block.With the growth of normal fault,the fault gouge in the normal fault occurs in forms of thinning,elongate,smear and dragging as dynamic evolution process,and shapes to a certain width of the upthrow block of the normal fault.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2011年第2期137-140,共4页
Xinjiang Petroleum Geology
基金
国家科技重大专项(2008ZX05006-002)
关键词
正断层
力学分析
断层泥
构造物理模拟
normal fault
mechanics analysis
fault gouge
tectonophysics modeling
