Pluton incremental growth by multi-stage magma pulsations: Evidence from the Fangshan pluton, North China Craton
文献类型：期刊论文
| 作者 | Zhang, Zhe-Kun3; Ling, Ming-Xing3; Zhang, Li-Peng2; Sun, Sai-Jun2; Sun, Weidong1,2
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| 刊名 | TECTONOPHYSICS
 |
| 出版日期 | 2022-09-05 |
| 卷号 | 838页码:16 |
| 关键词 | Zircon U-Pb geochronology Trace elements Hf isotopes Incremental magmatism |
| ISSN号 | 0040-1951 |
| DOI | 10.1016/j.tecto.2022.229480 |
| 通讯作者 | Ling, Ming-Xing(mxling@ecut.edu.cn) |
| 英文摘要 | The Fangshan intrusive suite is a composite pluton in the North China Craton that resulted from incremental assembly of small magma batches. The pluton consists of four intrusive units with abundant mafic enclaves. Here we clarify its crystallisation history through zircon U-Pb dating, which indicates prolonged crystallisation of each intrusive unit at upper-crustal levels between 132.5 and 128.7 Ma. The magmas were episodically extracted from a deep storage area and ascended to the final intrusion level at a palaeo-depth of 10-16 km. Zircon trace element and Hf isotopic compositions and Ti-in-zircon temperature of the four intrusive units and mafic enclaves show significant differences and suggest that their crystallisation occurred in isotopically and chemically diverse magma batches. These magma batches formed in the lower crust from the mingling and mixing of various proportions of residual melts, derived from the fractional crystallisation of mafic magmas, with crustal partial melts at high temperatures. Four type of zircons were observed in mafic enclaves based on a simple textural classification, including antecrysts (type 1), xenocrysts (type 2 and type 3), and recrystallised zircon (type 4). Type 1 zircons were not formed at the emplacement level and are "antecrystic", having formed at a deeper, hotter level and been entrained into the ascending melts. Most type 2 zircons were captured from coarse-grained monzonite, and a very small number of grains were sourced from porphyritic granodiorite. Type 3 zircons display a core-rim texture, illustrating that xenocrysts may successively grow in mafic melts. Type 4 zircons display patchy zoning that represents a disequilibrium texture, manifested by the replacement of U-Th-REE-rich zircon by U-Th-REE-poor zircon, which occurred in response to magma mixing between mafic and felsic melts. This study shows that zircon chemistry coupled with detailed textural analyses can provide a powerful tool to elucidate the complex evolution of a magmatic system. |
| 资助项目 | Natural Science Foundation of China[42173024] ; National Key Research and Development Program of China[2021YFC2901705] ; Jiangxi Double Thousand Plan ; State Key Laboratory of Nuclear Resources and Environment[2020Z03] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000893932900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/180982]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Ling, Ming-Xing |
| 作者单位 | 1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 3.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhe-Kun,Ling, Ming-Xing,Zhang, Li-Peng,et al. Pluton incremental growth by multi-stage magma pulsations: Evidence from the Fangshan pluton, North China Craton[J]. TECTONOPHYSICS,2022,838:16. |
| APA | Zhang, Zhe-Kun,Ling, Ming-Xing,Zhang, Li-Peng,Sun, Sai-Jun,&Sun, Weidong.(2022).Pluton incremental growth by multi-stage magma pulsations: Evidence from the Fangshan pluton, North China Craton.TECTONOPHYSICS,838,16. |
| MLA | Zhang, Zhe-Kun,et al."Pluton incremental growth by multi-stage magma pulsations: Evidence from the Fangshan pluton, North China Craton".TECTONOPHYSICS 838(2022):16. |
入库方式： OAI收割
来源：海洋研究所
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