Carbon isotope composition of the Lower Triassic marine carbonates, lower Yangtze Region, South China

doi:10.1007/s11430-006-0225-8

	Carbon isotope composition of the Lower Triassic marine carbonates, lower Yangtze Region, South China
	Zuo, JX ; Tong, JN ; Qiu, H ; Zhao, LS
	2006-03-01
Source Publication	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN	1006-9313
Volume	49 Issue:3 Pages:225-241
Abstract	Studies on three Lower Triassic sections located on the shallow water platform, the deep water slope and in the deep water basin in the Lower Yangtze Region, South China, show the similar trend of carbon isotope evolution. Biostratigraphic correlations among the Lower Triassic sections on the basis of standard conodont zones indicate that three negative shifts occurred in the Griesbachian, the Smithian and the late Spathian stages respectively, and one distinctly positive shift occurred in the early Spathian stage. Trend of carbon isotope evolution of the Lower Triassic reflects some significant changes in the global carbon cycle. Moreover, delta(13)C background values are intensively controlled by palaeogeographic environment. In general, delta(13)C values from deep-water slope carbonates are lighter than those from carbonate platform and heavier than those from deep-water basin carbonates. The positive carbon isotope excursion may be induced by a significant amount of organic carbon burial in marine sediments and increase in primary productivity. The large negative carbon isotope excursions during the Early Triassic in Lower Yangtze Region are interpreted to relate to volcano eruptions based on tuffaceous claystone interlayers observed near the Permian -Triassic boundary, the Incluan-Olenekian boundary and the Lower Triassic-Middle Triassic boundary.
Keyword	Lower Triassic carbon isotope compositions palaeogeography volcanic eruptions Lower Yangtze Region
DOI	10.1007/s11430-006-0225-8
Language	英语
WOS Keyword	MASS EXTINCTION ; SEQUENCE STRATIGRAPHY ; ZHEJIANG PROVINCE ; STABLE ISOTOPES ; MEISHAN SECTION ; BOUNDARY ; RECORD ; VOLCANISM ; EARTH ; PERTURBATION
WOS Research Area	Geology
WOS Subject	Geosciences, Multidisciplinary
WOS ID	WOS:000236874300001
Publisher	SCIENCE PRESS
Citation statistics	Cited Times:34[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.nigpas.ac.cn/handle/332004/551
Collection	中国科学院南京地质古生物研究所
Corresponding Author	Zuo, JX
Affiliation	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 2.Henan Inst Geol Survey, Zhengzhou 450007, Peoples R China 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 4.China Univ Geosci, Fac Chem Engn & Mat Sci, Wuhan 430074, Peoples R China
Recommended Citation GB/T 7714	Zuo, JX,Tong, JN,Qiu, H,et al. Carbon isotope composition of the Lower Triassic marine carbonates, lower Yangtze Region, South China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(3):225-241.
APA	Zuo, JX,Tong, JN,Qiu, H,&Zhao, LS.(2006).Carbon isotope composition of the Lower Triassic marine carbonates, lower Yangtze Region, South China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(3),225-241.
MLA	Zuo, JX,et al."Carbon isotope composition of the Lower Triassic marine carbonates, lower Yangtze Region, South China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.3(2006):225-241.

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