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Carbonate carbon isotope evolution of seawater across the Ediacaran-Cambrian transition: evidence from the Keping area, Tarim Basin, NW China
Guo, Qingjun1,2; Deng, Yinan3; Hu, Jian4; Wang, Liyuan1,5
2017-11-01
Source PublicationGEOLOGICAL MAGAZINE
ISSN0016-7568
Volume154Issue:6Pages:1244-1256
Corresponding AuthorGuo, Qingjun(guoqj@igsnrr.ac.cn) ; Wang, Liyuan()
AbstractSedimentary rocks from the Ediacaran-Cambrian boundary record important biological, climatic and geotectonic changes during this time. To date, only few geochemical investigations on the upper Ediacaran - upper Cambrian rocks in the Tarim Basin have been carried out. Here, we report high-resolution delta C-13(carb) records from the Penglaiba, the Wushi phosphorite and the Dongergou sections from Ediacaran-Cambrian Series 3 in the Keping area of the Tarim Basin. The sections display several obvious delta C-13(carb) shifts; delta C-13(carb) values increased from 3 parts per thousand to 6.7 parts per thousand across the Qigebulage Formation. Moreover, a negative delta C-13(carb) shift across the Ediacaran-Cambrian boundary is apparent; delta C-13(carb) values decreased to a minimum of -9.8 parts per thousand in the Wushi phosphorite section (-7.7 parts per thousand in Dongergou section and -5.4 parts per thousand in Penglaiba section), followed by a positive carbonate carbon isotopic excursion across the Yuertusi Formation into the middle of the overlying Xiaoerbulak Formation. Furthermore, more or less invariable positive delta C-13(carb) values characterize the middle and upper Xiaoerbulak Formation. The most negative delta C-13(carb) value (-14.3 parts per thousand) occurred near the base of the Shayilik Formation, which is the absolute minimum value among the studied sections of the Cambrian Series 2 to Cambrian Series 3 transition in the world. The delta C-13 data from Keping, Tarim Basin are in good agreement with carbon isotope profiles recorded in South China, and these events may reflect the perturbation of the carbon cycle in the Tarim Basin during the Ediacaran-Cambrian and the Cambrian Series 2 - Cambrian Series 3 transitions.
KeywordEdiacaran-Cambrian transition Cambrian Series 2-3 carbon isotope Tarim Basin NW China
DOI10.1017/S0016756817000206
WOS KeywordMA YANGTZE PLATFORM ; SOUTH CHINA ; PHANEROZOIC SEAWATER ; BLACK SHALES ; C-ISOTOPE ; RECORD ; STRATIGRAPHY ; BOUNDARY ; SIBERIA ; OCEAN
Indexed BySCI
Language英语
Funding Project973 Program[2013CB835004] ; National Natural Science Foundation of China (NSFC)[41473018] ; National Natural Science Foundation of China (NSFC)[41625006] ; National Natural Science Foundation of China (NSFC)[41173008]
Funding Organization973 Program ; National Natural Science Foundation of China (NSFC)
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000413978800006
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61064
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGuo, Qingjun; Wang, Liyuan
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Guangzhou Marine Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China
4.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Guizhou 550002, Peoples R China
5.Fuzhou Univ, Coll Zijin Min, Fuzhou 350116, Fujian, Peoples R China
Recommended Citation
GB/T 7714
Guo, Qingjun,Deng, Yinan,Hu, Jian,et al. Carbonate carbon isotope evolution of seawater across the Ediacaran-Cambrian transition: evidence from the Keping area, Tarim Basin, NW China[J]. GEOLOGICAL MAGAZINE,2017,154(6):1244-1256.
APA Guo, Qingjun,Deng, Yinan,Hu, Jian,&Wang, Liyuan.(2017).Carbonate carbon isotope evolution of seawater across the Ediacaran-Cambrian transition: evidence from the Keping area, Tarim Basin, NW China.GEOLOGICAL MAGAZINE,154(6),1244-1256.
MLA Guo, Qingjun,et al."Carbonate carbon isotope evolution of seawater across the Ediacaran-Cambrian transition: evidence from the Keping area, Tarim Basin, NW China".GEOLOGICAL MAGAZINE 154.6(2017):1244-1256.
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