摘要
以地震剖面解释为基础,认识纵向上不同时期发育的断裂体系组合规律和构造特征;在分析构造特征的基础上,将乌尔逊凹陷北部划分为上部、中部和下部构造层,并阐述各构造层的构造特征。通过制作乌尔逊凹陷北部构造演化史剖面,认为盆地的演化分为三个构造旋回、五个演化阶段,并认为乌尔逊凹陷是由三期盆地叠合而成,即早期裂陷盆地、中期断陷盆地、晚期凹陷盆地。
Structural layer in the North Orxon Depression, Hailar Basin may be divided into upper, middle and lower parts based on seismological data. The structural evolution of the basin may be divided into three cycles and five stages. And the Orxon Depression is a superimposed basin of rifting basin in the early, fault basin in the middle and depression basin.
出处
《四川地质学报》
2009年第4期396-399,共4页
Acta Geologica Sichuan
关键词
构造层
构造特征
演化史
叠合盆地
乌尔逊凹陷
structural layer
structural feature
evolutionary history
superimposed basin
Orxon depression
