摘要
目前有关渤海湾盆地构造形成机制的解释主要有两种 :伸展 +走滑观点和伸展 +拉分观点 .这些观点从现有的断层成因模式或应力分析原理出发 ,强调多种应力方式或多期构造应力场的作用 ,动力学机制的解释比较复杂 .研究表明 ,盆地边界几何条件 (包括裂陷边界几何形态、边界断层的剖面几何形态及性质 )和裂陷伸展方向是决定裂陷盆地伸展构造形成特征的关键因素 ,而砂箱模拟实验是研究裂陷盆地构造形成过程和机制的重要方法 .
At present,the explanations about the tectonic formative mechanism of bohaiwan basin mostly emphasize the action of manifold stress fashion or many periodical tectonic stress field,including extension + slip and extension + pull-apart. Based on the cause of formation of fault and the theory of rock distortion on the condition of microdistortion,these explanations are only speculations,and it isn't succinct about the explanation of dynamics mechanism. Indicated form the sandbox experiments,boundary geometry condition and rift extensional direction are the key factors that control the formative characters and distribution of the rift basin. Some evidences indicate that the complicated tectonic visage of bohaiwan basin is related to the complicated geometry conformation of the basin boundary. Sandbox experiments may provide revelation and bases for the embed studies of the Cenozoic tectonic cause of formation and dynamics mechanism of the bohaiwan basin.
出处
《地球物理学进展》
CSCD
2000年第1期98-107,共10页
Progress in Geophysics
