NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Evolution of carbon isotope composition in potential global stratotype section and point at Luoyixi, South China, for the base of the unnamed global seventh stage of Cambrian System
Zuo Jingxun1,2; Peng Shanchi (彭善池)1; Zhu Xuejian (朱学剑)1; Qi Yuping ()祁玉平1; Lin Huanling (林焕令)1; Yang Xianfeng (杨显峰)1
2008-02-01
Source PublicationJOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES
ISSN1002-0705
Volume19Issue:1Pages:9-22
Abstract

This work deals with the evolution of carbon isotope composition in the Luoyixi Section, a candidate of the Global Standard Stratotype-section and Point (GSSP), defining the base of the as-yet-undefined seventh stage of Cambrian System fit the first appearance of the cosmopolitan agnostoid Lejopyge laevigata. This level is favored in a vote of International Subcommission on Cambrian Stratigraphy (ISCS) as the bioborizon for defining the base of a global stage. Two hundred and sixty-four samples for carbon and oxygen isotope analysis have been collected from the carbonate successions at an interval of 0.25 to 0.5 m in this section. Results of the carbon isotope data exhibit a remarkable disciplinarian trend. The pattern of the carbon isotope evolution is gently undulant with a relatively long period during the underlying Drumian Stage, and then the values of delta C-13 fluctuate sharply with a short period in provisional seventh stage. The onset of sharp fluctuation in the delta C-13 values begins at the proposed GSSP level, defining the base of the global seventh stage, where delta C-13 values change from a gentle trend to a sharp trend. Distinct covariant-relationships among delta C-13, delta O-18, and sea level fluctuations suggest that a warming change in paleoclimate took place during the early global seventh stage, which led to a positive shift in delta C-13 values.

KeywordCarbon Isotope Composition Global Seventh Stage Of Cambrian System Luoyixi Section Northwestern Hunan
Language英语
WOS KeywordMass Extinctions ; Sea-level ; Boundary ; Stratigraphy ; Seawater ; Record ; Event ; Chronostratigraphy ; Perturbation ; Dissociation
WOS Research AreaGeology
WOS SubjectGeology ; Geosciences, Multidisciplinary
WOS IDWOS:000253958200002
PublisherCHINA UNIV GEOSCIENCES
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/149
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorZuo Jingxun
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeontol & Stratig, Nanjing 210008, Peoples R China
2.Henan Inst Geol Survey, Ufa 450001, Russia
Recommended Citation
GB/T 7714
Zuo Jingxun,Peng Shanchi ,Zhu Xuejian ,et al. Evolution of carbon isotope composition in potential global stratotype section and point at Luoyixi, South China, for the base of the unnamed global seventh stage of Cambrian System[J]. JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES,2008,19(1):9-22.
APA Zuo Jingxun,Peng Shanchi ,Zhu Xuejian ,Qi Yuping ,Lin Huanling ,&Yang Xianfeng .(2008).Evolution of carbon isotope composition in potential global stratotype section and point at Luoyixi, South China, for the base of the unnamed global seventh stage of Cambrian System.JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES,19(1),9-22.
MLA Zuo Jingxun,et al."Evolution of carbon isotope composition in potential global stratotype section and point at Luoyixi, South China, for the base of the unnamed global seventh stage of Cambrian System".JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES 19.1(2008):9-22.
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