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Middle-Late Ordovician iron-rich nodules on Yangtze Platform, South China, and their palaeoenvironmental implications
Luan, Xiaocong (栾晓聪)1,2; Brett, Carlton E.3; Zhan, Renbin (詹仁斌)1,2; Jin, Jisuo4; Wu, Rongchang (吴荣昌)1,2; Gong, Fangyi1,2
2018-10-01
Source PublicationLETHAIA
ISSN0024-1164
Volume51Issue:4Pages:523-537
Abstract

Iron-rich nodules occur on the Yangtze Platform, South China, especially along the marginal area, during the late Middle and early Late Ordovician (Darriwilian-Sandbian). Based on the study of samples from the Daling section, Anhui Province, these nodules include: (1) oncoids; (2) coated bioclasts; and (3) coated micritic intraclasts, all of which potentially have a similar biological origin. The nodule-bearing strata were deposited in a midouter ramp setting, indicating sediment starvation and open marine conditions, possibly combined with anoxia in deeper basinal areas and cool water upwelling during the formation of the nodules, rather than terrestrial input or local tectonic movement. The widespread distribution of iron-rich nodules at this time was probably favoured by high sea level and cooling climate, conditions that simultaneously favoured the evolutionary radiations of the GOBE in South China. Thus, these nodules form a time-specific signature of a critical time in the evolution of the marine ecosystem in the context of local environmental background along the marginal Yangtze Platform.

KeywordCoated Grain Great Ordovician Biodiversification Event Microfacies Analysis Oncoid Red Nodules
DOI10.1111/let.12271
Language英语
WOS KeywordBahariya Depression ; Ooidal Ironstones ; Western Desert ; Anti-atlas ; Biodiversification ; Diversification ; Radiation ; Bacterial ; Morocco ; Basin
Funding ProjectNational Natural Science Foundation of China (NSFC)[41290260] ; National Natural Science Foundation of China (NSFC)[41521061] ; National Natural Science Foundation of China (NSFC)[41672008] ; National Natural Science Foundation of China (NSFC)[J1210006] ; IGCP Project[653]
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000443400300006
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; IGCP Project
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16956
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorLuan, Xiaocong (栾晓聪)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
4.Western Univ, Dept Earth Sci, London, ON N6A 5B7, Canada
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Luan, Xiaocong ,Brett, Carlton E.,Zhan, Renbin ,et al. Middle-Late Ordovician iron-rich nodules on Yangtze Platform, South China, and their palaeoenvironmental implications[J]. LETHAIA,2018,51(4):523-537.
APA Luan, Xiaocong ,Brett, Carlton E.,Zhan, Renbin ,Jin, Jisuo,Wu, Rongchang ,&Gong, Fangyi.(2018).Middle-Late Ordovician iron-rich nodules on Yangtze Platform, South China, and their palaeoenvironmental implications.LETHAIA,51(4),523-537.
MLA Luan, Xiaocong ,et al."Middle-Late Ordovician iron-rich nodules on Yangtze Platform, South China, and their palaeoenvironmental implications".LETHAIA 51.4(2018):523-537.
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