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
发表期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN	1006-9313
卷号	49 期号:3 页码:225-241
摘要	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.
关键词	Lower Triassic carbon isotope compositions palaeogeography volcanic eruptions Lower Yangtze Region
DOI	10.1007/s11430-006-0225-8
语种	英语
关键词[WOS]	MASS EXTINCTION ; SEQUENCE STRATIGRAPHY ; ZHEJIANG PROVINCE ; STABLE ISOTOPES ; MEISHAN SECTION ; BOUNDARY ; RECORD ; VOLCANISM ; EARTH ; PERTURBATION
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000236874300001
出版者	SCIENCE PRESS
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/551
专题	中国科学院南京地质古生物研究所
通讯作者	Zuo, JX
作者单位	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
推荐引用方式 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.