依据起源于被动大陆边缘海相盆地的层序地层学基本原理，对缺乏地形坡折的柴达木盆地第四系进行了层序地层研究。
The Quaternary of Qaidam basin, being lack of topographic break, was studied based on the theory of sequence stratigraphy, which originated from marine basins in passive continental margin.
大型坳陷湖盆中存在与海相盆地中陆坡相似的坡折带。
The slope belts developed in large depressed lake basins are similar to continental slopes in marine basins.
层序IV，在陆坡和岛弧地区都有分布，但是在海槽盆地内部区域缺失该层序，为上新世沉积物。
We found that sequence IV, which is Pliocene sediments, only exists in the slope and island arc slope and not distributes in the trough basin.
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