Geochronology of the Hongliuxia ductile shear zone and its constraint on the closure time of the Junggar Ocean
文献类型：期刊论文
| 作者 | Wu Qi1,2; Qu Xun3; Chang GuoHu1,2; Zhang Yong4; Dong LianHui3; Xu XingWang1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 28期号:8页码:2331-2339 |
| 关键词 | Kalamaili ophiolite Hongliuxia ductile shear zone Junggar Ocean Zircon SIMS U-Pb dating |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Kalamaili ophiolitic belt in East Junggar is one of the important ophiolitic belts in Xinjiang, the closure time of Junggar Ocean represented by the Kalamaili ophiolitic belt is still argued and unclear. Recently, we discovered that the Hongliuxia EW-trending schistosity zone cut the Kalamaili ophiolite belt is a dextral ductile shear zone, which was formed in collision process between the Yemaquan arc and the Junggar block. The foliated granite and granitic ultramylonite in the ductile shear zone in the Boerqiangji area are selected for zircon SIMS U-Pb dating. New results show that the foliated granite has a concordia age of about 348. 1 +/- 2. 8Ma with a Pb-206/U-238 weight average age of about 348. 2 +/- 2. 7Ma, and the granitic ultramylonite has a concordia age of 343. 2 +/- 2. 6Ma with a Pb-206/U-238 weight average age of about 343. 5 +/- 2. 6Ma. Zircons from the granitic ultramylonite are new formed by metamorphic recrystallization; their ages may represent formation time of the ductile shear zone. This indicates that the Hongliuxia ductile shear zone was formed at about 343 Ma BP, and that the Junggar ocean should be closed before 343 Ma BP, and the East Junggar was involved in collisional orogen at the end of Early Carboniferous. |
| WOS关键词 | EASTERN TIANSHAN MOUNTAINS ; XINJIANG NW CHINA ; A-TYPE GRANITES ; SOUTHERN ALTAIDS ; U-PB ; ZIRCON ; MINERALIZATION ; ACCRETIONARY ; SUBDUCTION ; TECTONICS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000308275200003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84738]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wu Qi |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Xinjiang Bur Geol & Mineral Resources, Urumqi 830000, Peoples R China 4.China Geol Survey, Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu Qi,Qu Xun,Chang GuoHu,et al. Geochronology of the Hongliuxia ductile shear zone and its constraint on the closure time of the Junggar Ocean[J]. ACTA PETROLOGICA SINICA,2012,28(8):2331-2339. |
| APA | Wu Qi,Qu Xun,Chang GuoHu,Zhang Yong,Dong LianHui,&Xu XingWang.(2012).Geochronology of the Hongliuxia ductile shear zone and its constraint on the closure time of the Junggar Ocean.ACTA PETROLOGICA SINICA,28(8),2331-2339. |
| MLA | Wu Qi,et al."Geochronology of the Hongliuxia ductile shear zone and its constraint on the closure time of the Junggar Ocean".ACTA PETROLOGICA SINICA 28.8(2012):2331-2339. |
入库方式： OAI收割
来源：地质与地球物理研究所
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