CAJ | 학술논문

海拉尔盆地乌尔逊凹陷西部的边界断层-乌西断裂,对该凹陷的构造演化具有明显的控制作用.研究发现该断裂的生长发育有着明显的幕式演化特点:经历了分段连锁、宁静、活化和反转等4个演化阶段,每一阶段都有不同的构造和沉积特点.其中,分段连锁和活化阶段是凹陷的主要生长期,分段连锁阶段以发育张性断块构造样式为特征,活化阶段则以发育盖层滑脱型构造样式为主.乌西断裂的幕式演化对乌尔逊凹陷烃源岩演化、储盖系统的分布及含油气系统具有一定的控制作用.
해랍이분지오이손요함서부적변계단층-오서단렬,대해요함적구조연화구유명현적공제작용.연구발현해단렬적생장발육유착명현적막식연화특점:경력료분단련쇄、저정、활화화반전등4개연화계단,매일계단도유불동적구조화침적특점.기중,분단련쇄화활화계단시요함적주요생장기,분단련쇄계단이발육장성단괴구조양식위특정,활화계단칙이발육개층활탈형구조양식위주.오서단렬적막식연화대오이손요함경원암연화、저개계통적분포급함유기계통구유일정적공제작용.
Wuxi fault is the boundary fault of western Wuerxun depression in Hailar Basin,which plays an important role in tectonic evolution to the depression. The development of Wuxi fault presents Episodic evolution feature and undergoes four formation stages, including of the separate chain, motionlessness, activation and reverse. Separate chain and activation stages are the main growth periods of the depression. The separate chain stage is characterized by tensional block structural style while in the activation stages developde in cap decollement structural style. Episodic evolution of Wuxi fault plays the control role in source rock evolution, reservoir and cap distribution and petroleum system of Wuerxun depression.