SHRIMP U-Pb dating of zircons from granitoid bodies in the Songpan-Ganzi terrane and its implications.
文献类型：期刊论文
| 作者 | Hu, JM; Meng, QR; Shi, YR; Qu, HJ |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2005-05-01 |
| 卷号 | 21期号:3页码:867-880 |
| 关键词 | Songpan-ganzi Terrane Granitoid Zircon Shrimp U-pb Dating |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Songpan-Ganzi terrane is in general a triangular fold belt, bounded on the north, southeast and east by the eastern Kunlun-western Qinling tectonic belt, the Jinsha river tectonic belt and the Ungmenshan tectonic belt, respectively. It is mainly composed of Triassic turbidite, which is intruded by many granitoid bodies. It is obvious that the composition, sources and time of the granitic magma are very important for studing the basement and tectonic evolution of the Songpan-Ganzi terrane. This paper reports some SHRIMP U-Pb dating results for zircons from granitoids in the Songpan-Ganzi terrane. The dating results are as follows: (1) The granitoid intrusions occurred in the Late Triassic and Early Jurassic; (2) The earl-stage magmatism was nearly simultaneous with the folding of Triassic strata, suggesting that the magatis m might have related with a large detachment under the Triassic strata; (3) Some of the crystal zircons contain rounded or unregular cores in shape, and it is thought that the rounded zircons were captured from the wall rocks during the upwelling of the granitic magma or detrital zircons from partial melting of the lower crust. Based on the SHRIMP dating, the core zircons yield ages of the Periman, early Paleozoic, late Paleozoic, and early Proterozoic, respectively. The present of Proterozoic detrital zircons indicate that the Songpan-Ganzi terrane is presumably floored with Precambrian basement rocks. |
| WOS关键词 | S-TYPE GRANITES ; TIBETAN PLATEAU ; SOUTH CHINA ; FOLD BELT ; EVOLUTION ; NORTH ; ROCKS ; MODEL ; SHAN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000231179000026 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64981]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Hu, JM |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Beijing SHRIMP Ctr, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, JM,Meng, QR,Shi, YR,et al. SHRIMP U-Pb dating of zircons from granitoid bodies in the Songpan-Ganzi terrane and its implications.[J]. ACTA PETROLOGICA SINICA,2005,21(3):867-880. |
| APA | Hu, JM,Meng, QR,Shi, YR,&Qu, HJ.(2005).SHRIMP U-Pb dating of zircons from granitoid bodies in the Songpan-Ganzi terrane and its implications..ACTA PETROLOGICA SINICA,21(3),867-880. |
| MLA | Hu, JM,et al."SHRIMP U-Pb dating of zircons from granitoid bodies in the Songpan-Ganzi terrane and its implications.".ACTA PETROLOGICA SINICA 21.3(2005):867-880. |
入库方式： OAI收割
来源：地质与地球物理研究所
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