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| Syn-collisional felsic magmatism and continental crust growth: A case study from the North Qilian Orogenic Belt at the northern margin of the Tibetan Plateau | |
| Chen, Shuo1,2,3; Niu, Yaoling1,2,4; Xue, Qiqi5 | |
| 2018-05-01 | |
| Source Publication | LITHOS
 |
| ISSN | 0024-4937 |
| Volume | 308Pages:53-64 |
| Corresponding Author | Chen, Shuo(chenshuo528@foxmail.com) ; Niu, Yaoling(yaoling.niu@durham.ac.uk) |
| Abstract | The abundant syn-collisional granitoids produced and preserved at the northern Tibetan Plateau margin provide a prime case for studying the felsic magmatism as well as continental crust growth in response to continental collision. Here we present the results from a systematic study of the syn-collisional granitoids and their mafic magmatic enclaves (MMEs) in the Laohushan (LHS) and Machangshan (MCS) plutons from the North Qilian Orogenic Belt (NQOB). Two types of MMEs from the LHS pluton exhibit identical crystallization age (similar to 430 Ma) and bulk-rock isotopic compositions to their host granitoids, indicating their genetic link. The phase equilibrium constraints and pressure estimates for amphiboles from the LHS pluton together with the whole rock data suggest that the two types of MMEs represent two evolution products of the same hydrous andesitic magmas. In combination with the data on NQOB syn-collisional granitoids elsewhere, we suggest that the syn-collisional granitoids in the NQOB are material evidence of melting of ocean crust and sediment. The remarkable compositional similarity between the LHS granitoids and the model bulk continental crust in terms of major elements, trace elements, and some key element ratios indicates that the syn-collisional magmatism in the NQOB contributes to net continental crust growth, and that the way of continental crust growth in the Phanerozoic through syn-collisional felsic magmatism (production and preservation) is a straightforward process without the need of petrologically and physically complex processes. (C) 2018 Elsevier B.V. All rights reserved. |
| Keyword | Mafic magmatic enclaves Cumulate Amphibole Syn-collisional granodiorite Crust growth |
| DOI | 10.1016/j.lithos.2018.03.001 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606401] ; NSFC[41630968] ; NSFC[41130314] ; NSFC[41776067] ; UCAS Joint PhD. Training Program[UCAS[2015]37] |
| WOS Research Area | Geochemistry & Geophysics ; Mineralogy |
| WOS Subject | Geochemistry & Geophysics ; Mineralogy |
| WOS ID | WOS:000446791000004 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/160408 |
| Collection | 中国科学院海洋研究所 |
| Corresponding Author | Chen, Shuo; Niu, Yaoling |
| Affiliation | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England 5.China Univ Geosci, Sch Earth Sci & Mineral Resources, Beijing 100083, Peoples R China |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Chen, Shuo,Niu, Yaoling,Xue, Qiqi. Syn-collisional felsic magmatism and continental crust growth: A case study from the North Qilian Orogenic Belt at the northern margin of the Tibetan Plateau[J]. LITHOS,2018,308:53-64. |
| APA | Chen, Shuo,Niu, Yaoling,&Xue, Qiqi.(2018).Syn-collisional felsic magmatism and continental crust growth: A case study from the North Qilian Orogenic Belt at the northern margin of the Tibetan Plateau.LITHOS,308,53-64. |
| MLA | Chen, Shuo,et al."Syn-collisional felsic magmatism and continental crust growth: A case study from the North Qilian Orogenic Belt at the northern margin of the Tibetan Plateau".LITHOS 308(2018):53-64. |
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