塔里木板块西北缘石炭纪时期为一典型的被动大陆边缘,通过对本区石炭纪沉积层序及相对海平面变化研究,识别出不同类型的层序界面(SB1,SB2),并据此划分了4个二级沉积层序—超层序(Supersequence)和8个三级沉积层序(Sequence),且在区域上或全球范围内基本上可以对比。但由于所在大地构造位置不同,其沉积背景条件差异很大,因而在不同地区可以形成不同样式、不同数量的沉积层序,海平面变化表现形式也存在差别。 The Carboniferous epoch of the northwestern margin of the Tarim plate is a typical passive continental margin. Based on the study of the Carboniferous sedimentary sequence and relative sea level change in the study area, different types of sequence boundaries (SB1 and SB2) are identified, and 4 Second-order sedimentary sequences - Supersequence and eight third-order sedimentary sequences are basically comparable on a regional or global scale. However, due to the different tectonic positions of the tectonic setting, the sedimentary background conditions are very different. Therefore, different patterns and different depositional sequences can be formed in different regions, and there are also differences in sea level change manifestations.