Tectonic settings and accretionary orogenesis of the West Qinling Terrane, northeastern margin of the Tibet Plateau
文献类型：期刊论文
| 作者 | Yan Zhen1; Wang ZongQi2; Li JiLiang3; Xu ZhiQin1; Deng JinFu4 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-06-01 |
| 卷号 | 28期号:6页码:1808-1828 |
| 关键词 | Accretion orogen Active continental margin Ophiolitic melange Accretionary arc West Qinling Terrane |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The West Qinling Terrane, which was formed and superimposed on the Early Paleozoic orogen and plunged into the Qilian and Kunlun orogenic belts, is a typical accretionary orogen and characterized by a plurality of ophiolitic melanges, large-scale shear zones, Mesozoic volcanic-magmatism, and abundant porphyry-skarn deposits, showing a inverted triangular shape in the geological map of the Tibet Plateau and adjacent area. The ages of these ophiolitic melange and island-arc related volcanic and granitoid rocks with calc-alkaline geochemial affinities are younger to the south, implying a southward retreat of the trench during the evolution of the Tethys. Detrital framework and source area of Triassic sandstone samples suggest that deposition in an active continental margin which is originated from the accretionary complex and arc rocks in the northern margin of the Tethys. Petrological assemblage, petrogeochemistry and isotope geochemistry of these arc-related volcanic-granitoid rocks and porphyry-skarn deposits in the West Qinling Terrane are very similar to that of the East Kunlun and South Qinling. These facts indicate that East Kunlun, West Qinling and Qilian orogenic belts should have united and an EW-trending magmatic arc should also formed in the Triassic. Hf isotopic data of the zircons and geochemistry of the arc-related granitoids suggest that some magmatism should be derived from the melting of the subduction-accretion complex. |
| WOS关键词 | DETRITAL ZIRCON PROVENANCE ; SONGPAN-GANZI COMPLEX ; CENTRAL CHINA ; QINGHAI PROVINCE ; EAST KUNLUN ; FORE-ARC ; GEOLOGICAL CHARACTERISTICS ; PALEOZOIC EVOLUTION ; CONTINENTAL-CRUST ; SOUTHERN MARGIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000305817000008 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84612]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yan Zhen |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.China Univ Geosci, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan Zhen,Wang ZongQi,Li JiLiang,et al. Tectonic settings and accretionary orogenesis of the West Qinling Terrane, northeastern margin of the Tibet Plateau[J]. ACTA PETROLOGICA SINICA,2012,28(6):1808-1828. |
| APA | Yan Zhen,Wang ZongQi,Li JiLiang,Xu ZhiQin,&Deng JinFu.(2012).Tectonic settings and accretionary orogenesis of the West Qinling Terrane, northeastern margin of the Tibet Plateau.ACTA PETROLOGICA SINICA,28(6),1808-1828. |
| MLA | Yan Zhen,et al."Tectonic settings and accretionary orogenesis of the West Qinling Terrane, northeastern margin of the Tibet Plateau".ACTA PETROLOGICA SINICA 28.6(2012):1808-1828. |
入库方式： OAI收割
来源：地质与地球物理研究所
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