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| DOI | 10.1016/j.gr.2015.02.017 |
| Early Tertiary deformation of the Zhongba-Gyangze Thrust in central southern Tibet | |
| Wang, Hou-Qi; Ding, Lin; Cai, Fu-Long; Xu, Qiang; Li, Shun; Fu, Jia-Jun; Lai, Qing-Zhou; Yue, Ya-Hui; Li, Xin | |
| 通讯作者 | Wang, HQ (通讯作者) |
| 发表日期 | 2017 |
| ISSN | 1342-937X |
| EISSN | 1878-0571 |
| 起始页码 | 235 |
| 结束页码 | 248 |
| 卷号 | 41 |
| 英文摘要 | As the boundary thrust between India and Asia in southern Tibet, the Zhongba-Gyangze Thrust (ZGT) emplaced the Yarlung Zangbo Suture Zone (YZSZ) units in the hanging wall southward onto Tethyan Himalaya sequences (THS) of the northern Indian continental margin in the footwall. Detailed field investigation, electron backscatter diffraction (EBSD) analysis, detrital zircon U-Pb geochronology and Ar-40-Ar-39 thermochronology were conducted to understand the evolution of the ZGT in Sangsang area, central southern Tibet. The shear zone of ZGT is located within the sedimentary-matrix melange of YZSZ that is mainly composed of matrix of blueschist with meta pelagic-hemipelagic siliceous and siliciclastic rocks and blocks of basalt, limestone and sandstone. Penetrative F1 foliation and kink band structure were recorded within the matrix both on outcrop and under microscope. Strong lattice preferred orientation (LPO) fabric initiated by the low-temperature (350-450 degrees C) (010)[ 001] slip system was detected by EBSD in the sodic amphiboles of the blueschist. The 40Ar-39Ar ages of the phengites from blueschist and sericites from the phyllite in the shear zone indicate that the activity of ZGT occurred between 71 and 60 Ma. In the THS, a newly documented younger unit preserving detrital zircons from the southern Asian margin lies above the Triassic-Cretaceous sequences that carries only detrital zircons from the Indian continent. This unit is dated to be similar to 61 Ma by the detrital zircon ages, similar to the Sangdanlin Formation and representing the Yarlung Zangbo Foreland Basin (YZFB) system. The ZGT had probably been active due to the initial India-Asia collision and acted as the frontal thrust controlling the development of YZFB. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| 关键词 | ZIRCON U-PBYARLUNG-TSANGPO SUTUREFORE-ARC BASINSUBDUCTION-ACCRETION PROCESSESASIA CONTINENTAL COLLISIONHF ISOTOPIC CONSTRAINTSLHASA TERRANEFACIES ARCHITECTURECRETACEOUS STRATATETHYAN HIMALAYA |
| 英文关键词 | Initial India-Asia collision; Yarlung Zangbo Suture Zone; Zhongba-Gyangze Thrust; EBSD; Ar-40-Ar-39 dating |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000397873300016 |
| 来源期刊 | GONDWANA RESEARCH
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258924 |
| 推荐引用方式 GB/T 7714 | Wang, Hou-Qi,Ding, Lin,Cai, Fu-Long,et al. Early Tertiary deformation of the Zhongba-Gyangze Thrust in central southern Tibet[J]. 中国科学院青藏高原研究所,2017,41. |
| APA | Wang, Hou-Qi.,Ding, Lin.,Cai, Fu-Long.,Xu, Qiang.,Li, Shun.,...&Li, Xin.(2017).Early Tertiary deformation of the Zhongba-Gyangze Thrust in central southern Tibet.GONDWANA RESEARCH,41. |
| MLA | Wang, Hou-Qi,et al."Early Tertiary deformation of the Zhongba-Gyangze Thrust in central southern Tibet".GONDWANA RESEARCH 41(2017). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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