Ediacaran delta C-13 chemostratigraphy of South China

doi:10.1016/j.chemgeo.2006.06.021

NIGPAS OpenIR

	Ediacaran delta C-13 chemostratigraphy of South China
	Zhou, Chuanming ; Mao, Shuhai
	2007-02-15
发表期刊	CHEMICAL GEOLOGY
ISSN	0009-2541
卷号	237 期号:1-2 页码:89-108
摘要	We report new delta C-13 chemostratigraphic data of the Ediacaran System in South China. Using litho- and biostratigraphic markers as independent calibrators, we combine new and previously published delta C-13 data to construct a composite delta C-13 profile for the Ediacaran System in South China. The composite curve shows, in chronostratigraphic order, 1) a negative 613 C excursion (EN 1) in the Doushantuo cap carbonate that overlies the Ghaub-age Nantuo diamictite; 2) a pronounced positive delta C-13 excursion (EP 1) in the lower Doushantuo Formation where Doushantuo-type acanthomorphic acritarchs, red algae, and animal embryos first appear; 3) a mild negative delta C-13 excursion (EN2) in the middle Doushantuo Formation; 4) a positive delta C-13 excursion (EP2) in the upper Doushantuo Formation where Doushantuo-type acanthomorphic acritarchs, micrometazoans, and stem group florideophyte red algae become abundant and diverse; 5) a pronounced negative delta C-13 excursion (EN3) near the uppermost Doushantuo Formation; 6) a strongly positive delta C-13 excursion (up to +6.3(parts per thousand) PDB; EP3) in the lower Dengying Formation; 7) a stable delta C-13 plateau (ca. + 2.5 parts per thousand PDB; EI) in the middle and upper Dengying Formation where abundant vendotaenid algae, macroscopic Ediacamn fossils, biomineralized animal tubes, and mostly horizontal animal traces occur; and 8) a -10 parts per thousand negative delta C-13 excursion (EN4) immediately below the Ediacaran-Cambrian boundary. The general pattern of this composite delta C-13 curve is robust, despite a considerable amount of variation among the 613C profiles of different sections. This composite delta C-13 curve provides a first-order chemostratigraphic framework for the subdivision and correlation of the Ediacaran System in South China. (c) 2006 Elsevier B.V. All rights reserved.
关键词	carbon isotopes chemostratigraphy Neoproterozoic Ediacaran South China
DOI	10.1016/j.chemgeo.2006.06.021
语种	英语
关键词[WOS]	PRECAMBRIAN-CAMBRIAN BOUNDARY ; NEOPROTEROZOIC DOUSHANTUO FORMATION ; SNOWBALL EARTH HYPOTHESIS ; EARLY ANIMAL EVOLUTION ; YANGTZE PLATFORM ; CARBON-ISOTOPE ; NORTHWESTERN CANADA ; MACKENZIE MOUNTAINS ; PROTEROZOIC STRATIGRAPHY ; MARINOAN GLACIATION
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000245073100006
出版者	ELSEVIER SCIENCE BV
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/19254
通讯作者	Mao, Shuhai
作者单位	1.Virginia Polytech Inst & State Univ, Dept Geosci, Blacksburg, VA 24061 USA 2.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Chuanming,Mao, Shuhai. Ediacaran delta C-13 chemostratigraphy of South China[J]. CHEMICAL GEOLOGY,2007,237(1-2):89-108.
APA	Zhou, Chuanming,&Mao, Shuhai.(2007).Ediacaran delta C-13 chemostratigraphy of South China.CHEMICAL GEOLOGY,237(1-2),89-108.
MLA	Zhou, Chuanming,et al."Ediacaran delta C-13 chemostratigraphy of South China".CHEMICAL GEOLOGY 237.1-2(2007):89-108.