The nature of subduction system in the Neoarchean: Magmatic records from the northern Yangtze Craton, South China
文献类型：期刊论文
| 作者 | Zhang, Shao-Bing3,4; Zheng, Yong-Fei3,4; Wu, Peng3; He, Qiang3; Rong, Wei3; Fu, Bin1; Yang, Yue-Heng2; Liang, Ting3 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 347页码:18 |
| 关键词 | Neoarchean Plate subduction Warm subduction Intermittent subduction The Yangtze Craton |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2020.105834 |
| 英文摘要 | The 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. |
| WOS关键词 | ZIRCON U-PB ; ARCHEAN CONTINENTAL-CRUST ; A-TYPE GRANITES ; HF ISOTOPIC COMPOSITIONS ; STYLE PLATE-TECTONICS ; TRACE-ELEMENT ; IN-SITU ; YUDONGZI COMPLEX ; HIGH-PRECISION ; LU-HF |
| 资助项目 | Natural 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] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000561218200028 |
| 出版者 | ELSEVIER |
| 资助机构 | 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 ; 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 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/97672]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Zhang, Shao-Bing |
| 作者单位 | 1.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 4.USTC, CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：地质与地球物理研究所
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