前陆盆地构造作用的沉积响应

The Sedimentary Response to the Tectonism in Foreland Basin

前陆盆地与造山带具有良好的耦合性,可以用盆山耦合的思想来研究前陆盆地与构造事件的响应关系。逆冲构造运动对盆地的可容纳空间产生了深刻的影响,从而对盆地充填和层序叠置样式起重要的控制作用。整个前陆盆地区域具有两个阶段的盆地发展过程,第一个沉积阶段与冲断带附近的载荷侵位引起的构造沉降密切相关,第二个阶段发生于冲断带的侵蚀期,导致了盆地的再次沉积。前陆盆地不同的沉积层序是不同的构造事件的沉积响应。

There are excellent coupling between foreland basin and orogenic belt. Study shows that thrust tectonic events could produce profound influences to basinal accommodation, hence control the basinal fillings and the stratigraphic superposed forms. There are two stages during the development of foreland basin. The first stage is closely interrelated with the subsidence caused by loading emplacement, and the second stage appears the erosion phase of the trust belt which may cause the continued sedimentation. The different depositional sequences reflect the different tectonic events which are the sedimentary responses of different tectonic movements.