Meta-analysis of the DOUNCE event (Shuram/Wonoka excursion): Pattern variation, causal mechanism, and global correlation

doi:10.1016/j.earscirev.2024.105000

NIGPAS OpenIR

	Meta-analysis of the DOUNCE event (Shuram/Wonoka excursion): Pattern variation, causal mechanism, and global correlation
通讯作者	Zhu, Maoyan(myzhu@nigpas.ac.cn)
	Zhang, Yinggang 1; Zhu, Maoyan1,2
	2025-02-01
发表期刊	EARTH-SCIENCE REVIEWS (IF:7.491[JCR-2017],9.452[5-Year])
ISSN	0012-8252
卷号	261 页码:18
摘要	The DOUNCE (DOUshantuo Negative Carbon isotope Excursion) was marked by a significant shift in delta C-13(carb) from similar to + 5 parts per thousand down to similar to - 12 parts per thousand in the upper part of the Ediacaran Doushantuo Formation of South China. As an equivalent event of the Shuram/Wonoka anomaly, the DOUNCE event is the largest negative delta C-13(carb) excursion in geological history and denotes a global ocean oxygenation event. Consequently, it has been widely used as a chemostratigraphic tool for correlating the Ediacaran strata globally. Nonetheless, the DOUNCE exhibits variable stratigraphic expressions across sections and depositional environments, raising questions about its representation as a primary indicator of the Ediacaran seawater delta C-13 value. Such variability casts doubt on the reliability of the DOUNCE for global correlation, and its implications for the carbon cycle, oceanic oxygenation, and biological evolution during the Ediacaran period. To elucidate the DOUNCE event as a synchronous global occurrence and a chemostratigraphic tool, we have compiled the "DOUNCEraq", a global-scale database comprising 9375 valid delta C-13(carb) analyses from 156 sections/boreholes documenting the DOUNCE/Shuram/Wonoka event. Our meta-analysis of DOUNCEraq highlights the global scope of the DOUNCE event and reveals the presence of an instant rise stage post the abrupt delta C-13(carb) decline as an inherent feature of the DOUNCE pattern. Moreover, it also emphasizes the impacts of palaeolatitude, palaeocontinent, water depth, and lithology on the DOUNCE's pattern and variability: (1) lower pre-DOUNCE delta C-13(carb) values and smaller shift magnitudes within 30-0 degrees N compared to the southern hemisphere; (2) compared to the shallower sections, deep-water sections exhibit lower pre-DOUNCE and DOUNCE nadir delta C-13(carb) values with smaller shift magnitudes relative to shallower sections; (3) dolostones demonstrate lower pre-DOUNCE values, higher values at the DOUNCE nadirs, and smaller shift magnitudes compared to limestones. Such local impacts on the DOUNCE pattern provide important constraints on the causes of the DOUNCE event and could be explained within the DOC-oxidation hypothesis via regulating oxidants supply. Overall, the present meta-analysis enhances our understanding of the DOUNCE's global stratigraphic expressions and provides important constraints on the DOUNCE causes.
关键词	Carbon isotope excursion Shuram/Wonoka event Ediacaran Chemostratigraphy Quantitative analysis
DOI	10.1016/j.earscirev.2024.105000
收录类别	SCI
语种	英语
关键词[WOS]	CARBON-ISOTOPE EXCURSION ; EDIACARAN YANGTZE PLATFORM ; SOUTH CHINA ; DOUSHANTUO FORMATION ; JOHNNIE FORMATION ; DEATH-VALLEY ; OCEAN REDOX ; INTEGRATED CARBON ; LANTIAN FORMATION ; SHURAM
资助项目	National Key Research and Develop-ment Program of China[2022YFF0800100] ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[42402312] ; China Postdoctoral Science Foundation[2023M733592] ; Jiangsu Funding Program for Excellent Post-doctoral Talent
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001375981100001
项目资助者	National Key Research and Develop-ment Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Jiangsu Funding Program for Excellent Post-doctoral Talent
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44685
专题	中国科学院南京地质古生物研究所
通讯作者	Zhu, Maoyan
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Zhang, Yinggang,Zhu, Maoyan. Meta-analysis of the DOUNCE event (Shuram/Wonoka excursion): Pattern variation, causal mechanism, and global correlation[J]. EARTH-SCIENCE REVIEWS,2025,261:18.
APA	Zhang, Yinggang,&Zhu, Maoyan.(2025).Meta-analysis of the DOUNCE event (Shuram/Wonoka excursion): Pattern variation, causal mechanism, and global correlation.EARTH-SCIENCE REVIEWS,261,18.
MLA	Zhang, Yinggang,et al."Meta-analysis of the DOUNCE event (Shuram/Wonoka excursion): Pattern variation, causal mechanism, and global correlation".EARTH-SCIENCE REVIEWS 261(2025):18.