中文摘要：

藏北高原的柴达木盆地保存有完整的新生代沉积地层,通过对柴西茫崖凹陷背斜北东翼长尾台剖面详细的野外测量,结合室内薄片鉴定,研究了该剖面岩石组构、沉积构造、沉积相、岩石组合特征,划分了各组基本层序,分析了其旋回特征。最后,系统总结新生代地层的整体沉积演化特征,试图通过这些特征来揭示该地区整个新生代的沉积环境演化。

英文摘要：

Qaidam basin in northern Tibetan Plateau has preserved intact Cenozoic strata.Based on field survey of the Changweitai section along the northeast limb of the Mangya depression anticlinorium in combination with thin section analysis,the authors studied the lithology,facies and rock combination characteristics.Then through the basic sequence analysis,the cycle characteristics of each formation were revealed.Finally,the holistic sedimentary evolution characteristics of the Cenozoic strata were summarized,with the purpose of revealing the evolution of the regional Cenozoic sedimentary environment.