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Geochemical constraints on the petrogenesis of granitoids in the East Kunlun Orogenic belt, northern Tibetan Plateau: Implications for continental crust growth through syn-collisional felsic magmatism
文献类型：期刊论文
| 作者 | Huang, Hui1,2,3; Niu, Yaoling1,2,3,4; Nowell, Geoff1; Zhao, Zhidan2,3; Yu, Xuehui2,3; Zhu, Di-Cheng2,3; Mo, Xuanxue2,3; Ding, Shuo2,3 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2014-03-26 |
| 卷号 | 370页码:1-18 |
| 关键词 | East Kunlun Enclaves Cumulate Syn-collisional granitoids Crust growth Paleo-Tethyan |
| 通讯作者 | Huang, H (reprint author), Univ Durham, Dept Earth Sci, Durham DH1 3LE, England. |
| 英文摘要 | Early Triassic syn-collisional granitoids with mafic magmatic enclaves (MMEs) crop out along the entire East Kunlun Orogenic belt (EKOB) at the northern margin of the Tibetan Plateau. They are andesitic in composition and enriched in light rare earth elements (LREEs) with a flat heavy REE (HREE) pattern. Their average composition resembles that of the bulk continental crust. The enclosed MMEs have the same mineralogy as their host granitoids, but contain a greater mode of mafic minerals (amphibole and biotite), and thus have higher HREE abundances. Zircon U-Pb dating shows that both the granitoid hosts and MMEs have the same crystallization age of similar to 250 Ma and indistinguishable bulk rock Sr-Nd-Pb-Hf isotope compositions (I-Sr of 0.7080-0.7116, varying Pb-206/Pb-204(i) of 18.53-19.32, essentially constant epsilon(Nd(t)) of -5.3 to -2.1 and a small range of positive epsilon(Hf(t)), mostly 1.7-5.2). The complete isotopic overlapping between the granitoid hosts and the MMEs is understood to reflect that the MMEs are disintegrated cumulates formed at an early stage of the granitoid magma evolution within the same magmatic system. The isotopic data set reveals that the granitoids are variably evolved melts produced by partial melting of the subducted Paleo-Tethyan oceanic crust with terrigenous sediments under amphibolite-facies conditions in response to the continental collision. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Geochemistry & Geophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332530000001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/23816]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 作者单位 | 1.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England 2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China 3.China Univ Geosci, Sch Earth Sci & Mineral Resources, Beijing 100083, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Hui,Niu, Yaoling,Nowell, Geoff,et al. Geochemical constraints on the petrogenesis of granitoids in the East Kunlun Orogenic belt, northern Tibetan Plateau: Implications for continental crust growth through syn-collisional felsic magmatism[J]. CHEMICAL GEOLOGY,2014,370:1-18. |
| APA | Huang, Hui.,Niu, Yaoling.,Nowell, Geoff.,Zhao, Zhidan.,Yu, Xuehui.,...&Ding, Shuo.(2014).Geochemical constraints on the petrogenesis of granitoids in the East Kunlun Orogenic belt, northern Tibetan Plateau: Implications for continental crust growth through syn-collisional felsic magmatism.CHEMICAL GEOLOGY,370,1-18. |
| MLA | Huang, Hui,et al."Geochemical constraints on the petrogenesis of granitoids in the East Kunlun Orogenic belt, northern Tibetan Plateau: Implications for continental crust growth through syn-collisional felsic magmatism".CHEMICAL GEOLOGY 370(2014):1-18. |
入库方式： OAI收割
来源：海洋研究所
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