IGGCAS OpenIR  > 岩石圈演化国家重点实验室
The nature of subduction system in the Neoarchean: Magmatic records from the northern Yangtze Craton, South China
Zhang, Shao-Bing1,2; Zheng, Yong-Fei1,2; Wu, Peng1; He, Qiang1; Rong, Wei1; Fu, Bin3; Yang, Yue-Heng4; Liang, Ting1
2020-09-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume347Pages:18
AbstractThe Neoarchean is an important era during which plate tectonics began to operate widely on Earth. The style of plate tectonics in the Neoarchean should be different but poorly constrained. Here we report geochemical studies on felsic to mafic igneous rocks from the northern Yangtze Craton, which record a subduction at ca. 2.65-2.70 Ga with distinctive magmatic and geodynamic features from modern subduction system. The metaigneous rocks of felsic composition, trondhjemite gneisses (TTG), from the northern margin show high sodic contents, positive Eu anomalies, high (La/Yb)cn and Sr/Y ratios, low Yb and Y contents. The metaigneous rocks of mafic-intermediate composition from the northern margin are mainly calc-alkaline and show less fractionated REE patterns. They have similar zircon U-Pb ages of 2651 +/- 30 Ma to 2703 +/- 9 Ma, similar chondritic zircon epsilon(Hf)(t) values and whole-rock epsilon(Nd)(t) values of -1.6 to 3.4. Their zircon delta O-18 values are mostly 4.6-6.6 parts per thousand, similar to or slightly higher than normal mantle values. Additionally, they all record a metamorphic event at ca. 2.47-2.50 Ga. The potassic granites from the interior are A-type in geochemistry and show similar zircon U-Pb ages and epsilon(Hf)(t) values to the metaigneous rocks in the northern margin but obviously lower zircon delta O-18 values from 3.6 parts per thousand to 5.4 parts per thousand. The two types of rocks exhibit quartz delta O-18 values of 12.0-15.2 parts per thousand and 3.5-8.2 parts per thousand, respectively. The trondhjemite gneisses and calc-alkaline metaigneous rocks were derived from partial melting of the subducted crust and the metasomatized mantle wedge, respectively. The A-type granites are the products of high temperature magmatism in an extensional setting in response to the contemporaneous subduction. This demonstrates the development of a subduction system in the northern Yangtze Craton during 2.65-2.70 Ga. The contemporaneous development of both slab-derived and mantle wedge-derived magmatism is suggested as a feature of the Neoarchean subduction system that is distinguished from the modern ones. The lack of TTG magmatism at 2.50-2.65 Ga but the reburst of TTG and metamorphism at 2.47-2.50 Ga imply that the subduction in the Neoarchean is intermittent.
KeywordNeoarchean Plate subduction Warm subduction Intermittent subduction The Yangtze Craton
DOI10.1016/j.precamres.2020.105834
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
WOS KeywordZIRCON U-PB ; ARCHEAN CONTINENTAL-CRUST ; A-TYPE GRANITES ; HF ISOTOPIC COMPOSITIONS ; STYLE PLATE-TECTONICS ; TRACE-ELEMENT ; IN-SITU ; YUDONGZI COMPLEX ; HIGH-PRECISION ; LU-HF
Language英语
Funding ProjectNatural Science Foundation of China[41572168] ; Natural Science Foundation of China[41973002] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB41000000] ; Fundamental Research Funds for the Central Universities[WK2080000128]
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000561218200028
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/97672
Collection岩石圈演化国家重点实验室
Corresponding AuthorZhang, Shao-Bing
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China
2.USTC, CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
3.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Shao-Bing,Zheng, Yong-Fei,Wu, Peng,et al. The nature of subduction system in the Neoarchean: Magmatic records from the northern Yangtze Craton, South China[J]. PRECAMBRIAN RESEARCH,2020,347:18.
APA Zhang, Shao-Bing.,Zheng, Yong-Fei.,Wu, Peng.,He, Qiang.,Rong, Wei.,...&Liang, Ting.(2020).The nature of subduction system in the Neoarchean: Magmatic records from the northern Yangtze Craton, South China.PRECAMBRIAN RESEARCH,347,18.
MLA Zhang, Shao-Bing,et al."The nature of subduction system in the Neoarchean: Magmatic records from the northern Yangtze Craton, South China".PRECAMBRIAN RESEARCH 347(2020):18.
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
[Zhang, Shao-Bing]'s Articles
[Zheng, Yong-Fei]'s Articles
[Wu, Peng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Shao-Bing]'s Articles
[Zheng, Yong-Fei]'s Articles
[Wu, Peng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Shao-Bing]'s Articles
[Zheng, Yong-Fei]'s Articles
[Wu, Peng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

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