1前言层序地层学概念提供了一种框架，在这种框架中，可以预测沿平缓陆架剖面反映可容空间突变和渐变的碎屑沉积响应。在这种总体框架内部，盆地边缘或者具有陆架－陆坡坡折、或具有斜坡剖面形态。海平面下降越过陆架一斜坡坡折将引发深水浊积岩沉积作用，而斜坡边缘发育海遇时 1 INTRODUCTION The concept of sequence stratigraphy provides a framework in which the sediment response to sedimentation that characterizes catastrophic space changes and gradients along a gentle shelf profile can be predicted. Within this general framework, the basin margin either has a shelf-slope slope or has a slope profile. Decreasing sea level over a slope slope of the shelf will trigger sedimentation of turbidites in the deep water,