C-isotope composition and correlation of the Upper Neoproterozoic in Keping area, Xinjiang

查看全文 作　　者：HE XiuBin, XU Bei & YUAN ZhiYun The Key Laboratory of Orogenic Belts and Crustal Evolution, Peking University;Ministry of Education of China School of Earth and Space Sciences, Peking University, Beijing 100871, China

出　　处：《Chinese Science Bulletin》索引2007年第52卷第4期,共8页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 40572133 and 40032010). 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 Sugaitbrak Formation can be correlated with that at the middle part of the Doushantuo Formation in the Three-Gorge area and that at the top of the Hangelchaok diamictites in the Quruqtagh area. 关键词：新疆柯坪地区晚震旦世 C同位素成分冰川作用

相关文献

参考文献（1）
引证文献（8）
耦合文献（14）

参考文献(1)

引证文献(8)

耦合文献(14)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

C-isotope composition and correlation of the Upper Neoproterozoic in Keping area, Xinjiang

参考文献(1)

引证文献(8)

耦合文献(14)

用户提示