中文摘要：

在在 Keping 的上面的 Neoproterozoic 的碳酸盐的 C 同位素分析， Xinjiang 显示 Qigebrak 形成和上面的 Sugaitbrak 形成主要记录积极 C 同位素价值，和一次不同积极旅行发生在 theQigebrak 的更低的部分形成。在在 QigebrakFormation 之间的边界有三次否定旅行并且寒武纪，最高、最低上面的 Sugaitbrak 形成。这些人物在三峡的区域上面的 Neoproterozoic 类似于那些，它建议 UpperSugaitbrak 形成和 Qigebrak 形成能分别地与 theDoushantuo 形成和 Dengying 形成的中间、上面的部分被相关。在上面的 Sugaitbrak 形成的顶的否定旅行在 Doushantuo 形成的顶对应于那，当在 Sugaitbrak 形成的底部的否定旅行能在 Quruqtagh 区域在 theHangelchaok diamictites 的顶在三峡的区域和那在 Doushantuo 形成的中间的部分与那被相关时。

英文摘要：

C-isotope analysis of the carbonates in the Upper Neoproterozoic in Keping, Xinjiang indicates that the Qigebrak Formation and the Upper Sugaitbrak Formation mainly record positive C-isotope values, and a distinct positive excursion occurs in the lower part of the Qigebrak Formation. There are three negative excursions in the boundary between the Qigebrak Formation and the Cambrian, the uppermost and lowermost Upper Sugaitbrak Formation. These characters resemble those of the Upper Neoproterozoic in the Three-Gorge area, which suggests that the Upper Sugaitbrak Formation and Qigebrak Formation can be correlated with the middle and upper parts of the Doushantuo Formation and Dengying Formation, respectively. The negative excursion at the top of the Upper Sugaitbrak Formation corresponds to that at the top of the Doushantuo Formation, while the negative excursion at the bottom of the Sugaitbrsk Formation can be correlated with that at the middle part of the Ooushantuo Formation in the Three-Gorge area and that at the top of the Hangelchaok diamictites in the Quruqtsgh area.