Crustal melting in a protracted hot setting in the Altai Orogen (NW China): Evidence from Permian leucogranite dykes in the metamorphic belt
文献类型：期刊论文
| 作者 | Hu, Guohui2,4; Wang, Wei-(RZ)2,4; Xiao, Wenjiao1,5; Wei, Chunjing6; Zhao, Yue2; Liu, Jiangnan2,3 |
| 刊名 | LITHOS
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 384页码:16 |
| 关键词 | Leucogranite Metamorphic belt Zircon and monazite U-Pb dating Crustal melting Altai orogen |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2020.105962 |
| 英文摘要 | Numerous leucogranite dykes, and spatially associated high-grade metamorphic rocks, arewell-preserved in the Chinese Altai orogenic belt. Integrated petrological, geochronological, and geochemical results of the leucogranite dykes are presented to decipher their petrogenesis and constrain the tectono-thermal setting of the Altai orogen. The leucogranite dykes have high SiO2 (71.9-81.2 wt%) and Al2O3 contents (11.1-15.7 wt%), and low CaO, MgO and TiO2 contents, with a total alkali content (K2O + Na2O) of 4.55-9.88 wt%. All leucogranites show weakly to strongly peraluminous S-type granite affinities with A/CNK ratios of 1.0-2.2. Trace element concentrations indicate a characteristic high Rb content, low Ba and Sr contents, and Rb/Sr ratios of 0.43-35.8. They exhibit nearly flat REE patterns with strong negative Eu anomalies on chondrite-normalized REE patterns. Considering their low zircon saturation temperatures (682-758 degrees C) and low eNd(t) values (-12.4 to -2.7), as well as the presence of Al-rich minerals (muscovite and garnet), we infer that the leucogranites were low-temperature granites and generatedmainly by fluid-absent muscovite dehydration melting ofmetasediments. LA-ICPMS zircon and monazite U-Pb dating suggests crystallization ages of 279-267Ma, which places these leucogranite dykes in temporal association with the ultrahigh- to high-grade metamorphic rocks and implies a prolonged heat budget in the region. Together with contemporary magmatic activities and metamorphism in the Chinese Altai orogen, the generation of the leucogranite dykes may have been attributed to long-lasting high heat flow in the early Permian, most likely related to the assembly of the Junggar plate and the Chinese Altai. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | PALEOZOIC TECTONIC EVOLUTION ; I-TYPE PLUTONISM ; S-TYPE GRANITES ; ZIRCON U-PB ; CONTINENTAL-CRUST ; CONSTRAINTS ; ACCRETIONARY ; PETROGENESIS ; TEMPERATURE ; MAGMATISM |
| 资助项目 | National Natural Science Foundation of China[41672062] ; National Natural Science Foundation of China[41888101] ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS)[JYYWF201819] ; National Key R&D Program of China[2017YFC0601206] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS)[XDB18020203] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000652195000007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; Fundamental Research Funds of the Chinese Academy of Geological Sciences (CAGS) ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101194]  |
| 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 | Wang, Wei-(RZ) |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 3.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 4.Minist Nat Resources, Key Lab Paleomagnetism & Tecton Reconstruct, Beijing 100081, Peoples R China 5.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 6.Peking Univ, Sch Earth & Space Sci, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Guohui,Wang, Wei-,Xiao, Wenjiao,et al. Crustal melting in a protracted hot setting in the Altai Orogen (NW China): Evidence from Permian leucogranite dykes in the metamorphic belt[J]. LITHOS,2021,384:16. |
| APA | Hu, Guohui,Wang, Wei-,Xiao, Wenjiao,Wei, Chunjing,Zhao, Yue,&Liu, Jiangnan.(2021).Crustal melting in a protracted hot setting in the Altai Orogen (NW China): Evidence from Permian leucogranite dykes in the metamorphic belt.LITHOS,384,16. |
| MLA | Hu, Guohui,et al."Crustal melting in a protracted hot setting in the Altai Orogen (NW China): Evidence from Permian leucogranite dykes in the metamorphic belt".LITHOS 384(2021):16. |
入库方式： OAI收割
来源：地质与地球物理研究所
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