IOCAS-IR  > 海洋地质与环境重点实验室
Tectonic and paleoceanographic conditions during the formation of ferromanganese nodules from the northern South China Sea based on the high-resolution geochemistry, mineralogy and isotopes
Zhong, Yi1,2,3,4; Liu, Qingsong2,7; Chen, Zhong1; Javier Gonzalez, Francisco5; Hein, James R.6; Zhang, Jian3; Zhong, Lifeng8
2019-04-01
Source PublicationMARINE GEOLOGY
ISSN0025-3227
Volume410Pages:146-163
Corresponding AuthorChen, Zhong(chzhsouth@scsio.ac.cn)
AbstractDeep-water ferromanganese (Fe-Mn) nodules cumulate trace elements from the underlying sediment pore-water and seawater during the concentric mineral layers' growth process over millions of years. They can record long-term tectonic movements and paleoceanographic changes. To systematically ascertain paleoceanographic evolution of the deep South China Sea (SCS) since the last 3.2 Ma, we comprehensively investigated microstructure, mineralogy, geochemical element concentrations as well as Sr, Nd and Pb isotopic compositions in the Fe-Mn nodules nearby the Dongsha Islands in the northern SCS. Results indicate that these deposits were formed in a continental marginal environment by a mixture of diagenetic and hydrogenetic processes. Overall, the studied nodules can be divided into three stages with different microstructures and chemical compositions, which indicate different formation environments. Stage la is the innermost and oldest layer with a porous mottled texture, and has the lowest Mn/Fe ratio, Cu, Ni and Zn, which implies comparatively high oxidization conditions. In contrast, the Mn mineralogy of Stage 2 shows conditions similar to those of buserite formed under less oxidative conditions. Between Stage la and 2, Stage 1b represents a mixture of Stage la and 2 and has in homogeneous growth structures. Based on the Nd and Sr isotopic composition of the detrital phases and Pb isotopes, three potential terrigenous source regions including South China, Luzon and Taiwan that discharge into the northern SCS from 3.2 Ma to 1.06 Ma. After 1.06 Ma, the terrigenous fraction in the Fe-Mn deposits on the northern slope of the SCS is a two end-members mixture of fluvial input from Taiwan Islands and eolian dusts from the Chinese loess. Our study indicates that SCS bottom water variation occurred at similar to 3.2 Ma, 2.1 Ma, and 1.06 Ma, respectively, which could be attributed to global cooling and the influence of Luzon arc-forearc uplift.
KeywordPaleoceanography Closure of gateway Pacific Deep Water Radiogenic isotopes Northern Hemisphere Glaciation Northern South China Sea
DOI10.1016/j.margeo.2018.12.006
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41676056] ; National Natural Science Foundation of China[43176057] ; National Natural Science Foundation of China[41806063] ; National Natural Science Foundation of China[41874078] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2018KG05] ; State Key Laboratory of Marine Geology, Tongji University[MGK1826]
WOS Research AreaGeology ; Oceanography
WOS SubjectGeosciences, Multidisciplinary ; Oceanography
WOS IDWOS:000460716000012
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/155305
Collection海洋地质与环境重点实验室
Corresponding AuthorChen, Zhong
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China
5.Geol Survey Spain IGME, Marine Geol Dv, Madrid 28003, Spain
6.US Geol Survey, 2885 Mission St, Santa Cruz, CA 95060 USA
7.Qingdao Natl Oceanog Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
8.Sun Yat Sen Univ, Sch Marine Sci, Guangzhou 510006, Guangdong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhong, Yi,Liu, Qingsong,Chen, Zhong,et al. Tectonic and paleoceanographic conditions during the formation of ferromanganese nodules from the northern South China Sea based on the high-resolution geochemistry, mineralogy and isotopes[J]. MARINE GEOLOGY,2019,410:146-163.
APA Zhong, Yi.,Liu, Qingsong.,Chen, Zhong.,Javier Gonzalez, Francisco.,Hein, James R..,...&Zhong, Lifeng.(2019).Tectonic and paleoceanographic conditions during the formation of ferromanganese nodules from the northern South China Sea based on the high-resolution geochemistry, mineralogy and isotopes.MARINE GEOLOGY,410,146-163.
MLA Zhong, Yi,et al."Tectonic and paleoceanographic conditions during the formation of ferromanganese nodules from the northern South China Sea based on the high-resolution geochemistry, mineralogy and isotopes".MARINE GEOLOGY 410(2019):146-163.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhong, Yi]'s Articles
[Liu, Qingsong]'s Articles
[Chen, Zhong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhong, Yi]'s Articles
[Liu, Qingsong]'s Articles
[Chen, Zhong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhong, Yi]'s Articles
[Liu, Qingsong]'s Articles
[Chen, Zhong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.