Formation of the Jurassic South China Large Granitic Province: Insights from the genesis of the Jiufeng pluton
文献类型：期刊论文
| 作者 | Huang, Hui-Qing1,2,3,4; Li, Xian-Hua3; Li, Zheng-Xiang1,2; Li, Wu-Xian5 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2015-04-24 |
| 卷号 | 401页码:43-58 |
| 关键词 | Large Granitic Province Zircon Oxygen Isotopes South China Flat-slab Mesozoic |
| DOI | 10.1016/j.chemgeo.2015.02.019 |
| 文献子类 | Article |
| 英文摘要 | The magma source and thermal regime for the formation of Large Granitic Provinces (LGPs) have been the subjects of much debate. As mineralogical, geochemical and isotopic variations of plutonic rocks preserve records of crustal thermal evolution, the Jiufeng pluton was comprehensively studied to gain insights into material and heat sources and tectonic process in the formation of the South China LGP. SIMS zircon U-Pb analyses of a biotite granite (158.9 +/- 1.3 Ma), three two-mica granites (stage I: 159.7 +/- 1.2 Ma, stage II: 158.6 +/- 1.2 Ma and 156.8 +/- 1.2 Ma) and a muscovite granodiorite (159.0 +/- 4.4 Ma) of the Jiufeng pluton suggest that they are coeval and were emplaced in a short period of no more than 5.3 m.y. Limited variations in whole-rock Nd isotope (epsilon Nd(t) = -12.6 to -9.5) and zircon Hf-O isotopes (epsilon Hf(t) = - 12.0 to -6.3, delta O-18 = 6.8 parts per thousand - 9.4 parts per thousand) suggest that the Jiufeng pluton was mainly derived from melting of a common metasedimentary source, possibly with a minor basaltic contribution. We consider the geochemical variations of the Jiufeng pluton are primarily a result of incremental assembly of magma batches produced from rapid step-like transition from fluid-saturated to fluid-absent melting of the source. The muscovite granodiorite, with high Na2O (>3.80 wt.%; K2O/Na2O = similar to 1), is interpreted to have been produced by fluid-saturated melting at low temperature (similar to 650 degrees C). High P2O5 (0.09-0.17 wt.%), zircon saturation temperature (T-Zr = 769-816 degrees C) and La/Yb ratios (8.4-55.8) of the stage II two-mica granite support its formation from high-temperature (>800 degrees C) biotite-dehydration melting, whereas lower P2O5 (<0.02wt.%), T-Zr (685-742 degrees C) and La/Yb (<3) of the stage I two-mica granite suggest its generation at lower temperature, likely by muscovite-dehydration melting. We propose that extensive emplacement of basaltic melts in the lower crust most likely drove the rapid increase of mid-crustal (similar to 20 km) temperature (similar to 50 degrees C/m.y.) and widespread crustal melting for the formation of the Jurassic South China LGP. Therefore, formation of the LGP signifies prominent crustal growth as well as crustal reworking in an intraplate setting and was likely a response to flat-slab delamination and foundering. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS关键词 | S-TYPE GRANITES ; LACHLAN FOLD BELT ; A-TYPE GRANITES ; U-PB ZIRCON ; ISOTOPIC MIXING MODEL ; SLAB SUBDUCTION MODEL ; I-TYPE GRANITES ; HF-O ISOTOPES ; SOUTHEASTERN CHINA ; CONTINENTAL-CRUST |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000352086900004 |
| 资助机构 | Chinese Ministry of Science and Technology(2012CB416702) ; Chinese Ministry of Science and Technology(2012CB416702) ; Chinese Ministry of Science and Technology(2012CB416702) ; Chinese Ministry of Science and Technology(2012CB416702) ; University Central Scientific Services ; University Central Scientific Services ; University Central Scientific Services ; University Central Scientific Services ; Chinese Ministry of Science and Technology(2012CB416702) ; Chinese Ministry of Science and Technology(2012CB416702) ; Chinese Ministry of Science and Technology(2012CB416702) ; Chinese Ministry of Science and Technology(2012CB416702) ; University Central Scientific Services ; University Central Scientific Services ; University Central Scientific Services ; University Central Scientific Services |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62580]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Curtin Univ, ARC Ctr Excellence Core Crust Fluid Syst CCFS, Perth, WA 6845, Australia 2.Curtin Univ, Inst Geosci Res TIGeR, Dept Appl Geol, Perth, WA 6845, Australia 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.Univ Newcastle, Sch Environm & Life Sci, NSW Inst Frontiers Geosci, Callaghan, NSW 2308, Australia 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Hui-Qing,Li, Xian-Hua,Li, Zheng-Xiang,et al. Formation of the Jurassic South China Large Granitic Province: Insights from the genesis of the Jiufeng pluton[J]. CHEMICAL GEOLOGY,2015,401:43-58. |
| APA | Huang, Hui-Qing,Li, Xian-Hua,Li, Zheng-Xiang,&Li, Wu-Xian.(2015).Formation of the Jurassic South China Large Granitic Province: Insights from the genesis of the Jiufeng pluton.CHEMICAL GEOLOGY,401,43-58. |
| MLA | Huang, Hui-Qing,et al."Formation of the Jurassic South China Large Granitic Province: Insights from the genesis of the Jiufeng pluton".CHEMICAL GEOLOGY 401(2015):43-58. |
入库方式： OAI收割
来源：地质与地球物理研究所
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