Petrogenesis of the middle Jurassic appinite and coeval granitoids in the Eastern Hebei area of North China Craton
文献类型：期刊论文
| 作者 | Fan, Wenbo1,2; Jiang, Neng1,2; Xu, Xiyang1,2; Hu, Jun1,2; Zong, Keqing3 |
| 刊名 | LITHOS
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 278页码:331-346 |
| 关键词 | Appinite Granite Magma mixing Subduction zone magmas Hydration of lithospheric mantle |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2017.01.030 |
| 文献子类 | Article |
| 英文摘要 | An integrated study of zircon UPb ages and HfO isotopic compositions, whole rock elemental and SrNd isotope geochemistry was conducted on three lithologically diverse middle Jurassic plutons from the Eastern Hebei area of the North China Craton (NCC), in order to reveal both their petrogenesis and possible tectonic affinity. The three plutons have consistent magmatic zircon UPb ages from 167 +/- 1 Ma to 173 +/- 1 Ma. The Nianziyu pluton has typical characteristics of appinite with low SiO2 (43.752.6%), high Ca, Mg, Fe and H2O contents. It possesses subduction-related trace element patterns, enriched NdHf isotopic signatures as well as elevated zircon delta O-18 values (6.27.2), arguing for an enriched mantle source metasomatized by fluids related to subduction. The Shuihutong monzogranites have high silica (SiO2 = 75.475.9%) and alkali contents, low Ca contents and striking negative Ba, Sr and Eu anomalies. Samples from the pluton have more evolved NdHf isotopic values and are considered to be most likely derived from anatexis of ancient lower continental crust. Hybridization between mantle- and ancient lower crust-derived magmas is proposed for the mafic microgranular enclave-bearing Baijiadian granitoids, which are characterized by variable epsilon(Nd(t)) and epsilon(Hf(t)) values. Integrated with the regional geologic history, we suggest that the formation of the three middle Jurassic plutons were related to the subduction of the Paleo-Pacific ocean plate beneath the NCC. Their petrogenetic differences reflect complex magmatic processes in subduction settings involving melting of multiple sources, possible partly facilitated by fluid metasomatism and water-rich magma injection, accompanied with various degrees of magma mixing. The appearance of middle Jurassic appinitic rocks leads us to propose that the NCC destruction and lithosphere thinning were facilitated and controlled by the weakening of the lithospheric mantle after hydration because of the subduction of the paleo-Pacific ocean plate. The lower crust of the craton was also reactivated at the same time due to the subduction. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | SINO-KOREAN CRATON ; A-TYPE GRANITES ; U-PB AGE ; HF-ISOTOPE ANALYSIS ; TECTONIC IMPLICATIONS ; LITHOSPHERIC MANTLE ; LU-HF ; SOUTHEASTERN AUSTRALIA ; MESOZOIC MAGMATISM ; ZIRCON MEGACRYSTS |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000399258500023 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China(41573032) ; National Natural Science Foundation of China(41573032) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; National Natural Science Foundation of China(41573032) ; National Natural Science Foundation of China(41573032) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; National Natural Science Foundation of China(41573032) ; National Natural Science Foundation of China(41573032) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; National Natural Science Foundation of China(41573032) ; National Natural Science Foundation of China(41573032) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) ; State Key Research Project of Chinese Ministry of Science and Technology(2016YFC0600103) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/39143]  |
| 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 | Jiang, Neng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Geosci, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Wenbo,Jiang, Neng,Xu, Xiyang,et al. Petrogenesis of the middle Jurassic appinite and coeval granitoids in the Eastern Hebei area of North China Craton[J]. LITHOS,2017,278:331-346. |
| APA | Fan, Wenbo,Jiang, Neng,Xu, Xiyang,Hu, Jun,&Zong, Keqing.(2017).Petrogenesis of the middle Jurassic appinite and coeval granitoids in the Eastern Hebei area of North China Craton.LITHOS,278,331-346. |
| MLA | Fan, Wenbo,et al."Petrogenesis of the middle Jurassic appinite and coeval granitoids in the Eastern Hebei area of North China Craton".LITHOS 278(2017):331-346. |
入库方式： OAI收割
来源：地质与地球物理研究所
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