Acanthomorph Biostratigraphic Succession of the Ediacaran Doushantuo Formation in the East Yangtze Gorges, South China

CORC > 中国地质调查局 > 中国地质调查局

	Acanthomorph Biostratigraphic Succession of the Ediacaran Doushantuo Formation in the East Yangtze Gorges, South China
	Yin, CY (Yin Chongyu); Liu, PJ (Liu Pengju); Awramik, SM (Awramik, Stanley M.); Chen, SM (Chen Shouming); Tang, F (Tang Feng); Gao, LZ (Gao Linzhi); Wang, ZQ (Wang Ziqiang); Riedman, LA (Riedman, Leigh A.)
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2011
卷号	85 期号:2 页码:283-295
关键词	Acanthomorph biostratigraphic succession Ediacaran Doushantuo Formation the Yangtze Gorges South China
ISSN号	1000-9515
英文摘要	Large acanthomorphic acritarchs have been found in chert of the Ediacaran Doushantuo Formation at several localities in South China, including the East Yangtze Gorges of Hubei Province, Weng'an area of Guizhou Province, and elsewhere. However, their potential for biostratigraphic subdivision and correlation of Ediacaran successions is limited by facies control, taphonomic baises, and taxonomic probles. In the Yangtze Gorges, the Doushantuo Formation is generally subdivided into four lithologic members. However, in the Weng'an area, the Doushantuo Formation comprises just a lower and upper part separated by a mid-Doushantuo erosional surface. In the Yangtze Gorges at the Zhangcunping section, the Doushantuo succession is similar to that at Weng'an. So far, the correlation between the Yangtze Gorges and Weng'an area, and elsewhere has been an issue of debate. To resolve the debate, we selected eight sections in the Yangrze Gorges area and systemically samples chert nodules of the Doushantuo Formation, focusing in particular on the upper Doushantuo Formation. Our data confirm two different assemblages appering separately in the second and third members, which are seperated by a negative delta(13)C excursion (EN2). The lower assemblage is characterized by Tianzhushania and a diverse suite of large acanthomorphic acritarchs. The upper assemblage is distinguished from the lower assemblage, by (1) absence of Tianzhushania; (2) occurrence of abundant, 100-500 mu m, smooth-walled spherical microfossils; (3) occurrence of highly diverse acanthomorphic acritarchs including species extending from the second member and new forms in this member; (4) occurrence of unnamed new forms of protist; and (5) occurrence of the tubular microfossile Sinocyclocylicus guizhouensis. Since the Tianzhusania-dominated assemblage is not present in Australia, it seems that only the upper acanthomorph assemblage is present and thus the lower Doushantuo acanthomorph assemblage is missing in Australia.
学科主题	前寒武纪地质
WOS关键词	ANIMAL EMBRYOS ; PB AGES ; MICROFOSSILS ; FOSSILS ; ACRITARCHS ; CONSTRAINTS ; GUIZHOU ; CHRONOSTRATIGRAPHY ; DIVERSIFICATION ; PRESERVATION
WOS研究方向	Geology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000289845800003
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39431]
专题	中国地质调查局
作者单位	China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Yin, CY ,Liu, PJ ,Awramik, SM ,et al. Acanthomorph Biostratigraphic Succession of the Ediacaran Doushantuo Formation in the East Yangtze Gorges, South China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2011,85(2):283-295.
APA	Yin, CY .,Liu, PJ .,Awramik, SM .,Chen, SM .,Tang, F .,...&Riedman, LA .(2011).Acanthomorph Biostratigraphic Succession of the Ediacaran Doushantuo Formation in the East Yangtze Gorges, South China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,85(2),283-295.
MLA	Yin, CY ,et al."Acanthomorph Biostratigraphic Succession of the Ediacaran Doushantuo Formation in the East Yangtze Gorges, South China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 85.2(2011):283-295.