Integrated study of the Doushantuo Formation in northwestern Hunan Province: Implications for Ediacaran chemostratigraphy and biostratigraphy in South China

doi:10.1016/j.precamres.2022.106699

	Integrated study of the Doushantuo Formation in northwestern Hunan Province: Implications for Ediacaran chemostratigraphy and biostratigraphy in South China
	Shi, Hongyi 3,4,5; Ouyang, Qing 2,4,5; Zhou, Chuanming 3,4,5; Xiao, Shuhai 1; Chen, Zhe 3,4,5; Guan, Chengguo 4,5
刊名	PRECAMBRIAN RESEARCH
	2022-08-01
卷号	377 页码:22
关键词	Ediacaran Period Yangtze Block Acanthomorphic acritarch Carbon isotopic profile Shuram excursion Facies change
ISSN号	0301-9268
DOI	10.1016/j.precamres.2022.106699
通讯作者	Ouyang, Qing(qouyang@nigpas.ac.cn)
英文摘要	The Ediacaran Doushantuo Formation in South China documents profound biological and environmental changes after the Neoproterozoic global glaciations. However, since the geological records of these changes are scattered in various lithofacies, the establishment of the co-evolutionary pattern of life and environment largely relies on regional stratigraphic correlation. A negative delta C-13 excursion in the upper Doushantuo Formation in the shelf-margin facies has been correlated with different delta C-1(3) chemostratigraphic features in the Doushantuo Formation in the shelf-lagoon facies: either with EN3 (widely regarded as equivalent to the Shuram excursion in Oman) or with EN2, which occur respectively in the upper and middle Doushantuo Formation in the Yangtze Gorges area of South China. Here we report new litho-, chemo-, and biostratigraphic data of the Douoshantuo Formation at the Caojunba section in shelf-margin facies, where the lithostratigraphic sequence and carbon isotopic profile resemble those at other shelf-margin sections, e.g., the Yangjiaping and Zhongling sections. Diverse microfossils including nine genera and eighteen species of acanthomorphic acritarchs are found from the upper Doushantuo Formation at Caojunba, which represent to date the first report of the upper Doushantuo acritarch assemblage from the shelf-margin facies in South China. The newly recovered microfossil assemblage includes Hocosphaeridium anozos, H. scaberfacium, Tanarium conoideum, and clustered leiospheres, and these taxa support the stratigraphic correlation of upper Doushantuo Formation between shelf-margin and shelf-lagoon facies. This correlation indicates that the interval with negative delta(13) C values in the upper Doushantuo Formation of shelf-margin facies is likely equivalent to EN3. This correlation also suggests that the delta C-13 profiles of the EN3/Shuram excursion interval in different facies in South China have various expressions (e.g., stratigraphic range, magnitude), making its regional and continental correlations more challenging. On the other hand, the discovery of acritarch assemblage characteristic of the upper Doushantuo Formation in the Yangtze Gorges area from shelf-margin facies confirms their potential as an independent stratigraphic tool in the subdivision and correlation of Ediacaran strata.
资助项目	Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41902006] ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[41972005] ; National Key R & D Program of China[2017YFC0603101] ; State Key Laboratory of Biogeology and Environmental Geology[GBL22106] ; National Science Foundation[EAR-2021207]
WOS关键词	YANGTZE GORGES AREA ; UPPER SLOPE SECTION ; ACANTHOMORPHIC ACRITARCHS ; SHURAM EXCURSION ; CARBON ; MICROFOSSILS ; PLATFORM ; EVOLUTION ; OXIDATION ; MARGIN
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000832717900001
资助机构	Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Key R & D Program of China ; State Key Laboratory of Biogeology and Environmental Geology ; National Science Foundation
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/41099]
专题	中国科学院南京地质古生物研究所
通讯作者	Ouyang, Qing
作者单位	1.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA 2.China Univ Geosci Wuhan, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China 5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Shi, Hongyi,Ouyang, Qing,Zhou, Chuanming,et al. Integrated study of the Doushantuo Formation in northwestern Hunan Province: Implications for Ediacaran chemostratigraphy and biostratigraphy in South China[J]. PRECAMBRIAN RESEARCH,2022,377:22.
APA	Shi, Hongyi,Ouyang, Qing,Zhou, Chuanming,Xiao, Shuhai,Chen, Zhe,&Guan, Chengguo.(2022).Integrated study of the Doushantuo Formation in northwestern Hunan Province: Implications for Ediacaran chemostratigraphy and biostratigraphy in South China.PRECAMBRIAN RESEARCH,377,22.
MLA	Shi, Hongyi,et al."Integrated study of the Doushantuo Formation in northwestern Hunan Province: Implications for Ediacaran chemostratigraphy and biostratigraphy in South China".PRECAMBRIAN RESEARCH 377(2022):22.