Middle Eocene-Oligocene anatexis and exhumation of the Greater Himalayan Sequence in central Nepal
文献类型：期刊论文
| 作者 | Xu, Zhiqin5,6; Wang, Qin6; Dong, Hanwen5; Cao, Hui5; Li, Guangwei6; Liang, Fenghua5; Rai, Santa Man4; Kylander-Clark, Andrew3; Adhikari, Santosh2; Ji, Shaocheng1 |
| 刊名 | TERRA NOVA
 |
| 出版日期 | 2021-09-12 |
| 页码 | 12 |
| ISSN号 | 0954-4879 |
| DOI | 10.1111/ter.12551 |
| 英文摘要 | We present structural analysis and zircon and monazite geochronology of the Greater Himalayan Sequence (GHS) in the Kali Gandaki valley, central Nepal. Although the foliation is moderately NE-dipping, the upper GHS shows a top-to-WNW shear sense, whereas the lower GHS developed top-to-SW ductile shear zones. Quartz fabrics from mylonitic gneisses indicate deformation temperature from >650 degrees C to similar to 450 degrees C. Monazite from the GHS recorded anatexis at "near peak" conditions from similar to 43 to 28 Ma and exhumation near the sillimanite-kyanite transition at 25-21 Ma. Ages of zircon rims constrain the onset of exhumation. From the upper GHS to the Main Central Thrust zone, pervasive deformation and anticlockwise rotation of the lineation from the orogen-parallel to orogen-perpendicular direction suggest exhumation of the GHS by general shear from similar to 31 to 21 Ma. A two-stage exhumation model is proposed to explain the diffuse strain distribution and anatexis during early crustal thickening. |
| WOS关键词 | ANNAPURNA-DHAULAGIRI HIMALAYA ; MAIN CENTRAL THRUST ; TECTONIC EVOLUTION ; OROGEN-PARALLEL ; WESTERN NEPAL ; METAMORPHIC CORE ; DEFORMATION ; CONSTRAINTS ; EXTENSION ; RANGE |
| 资助项目 | National Natural Science Foundation of China[40921001] ; National Natural Science Foundation of China[41872224] ; Geological Survey of China[1212010818094] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000695093300001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Survey of China ; Geological Survey of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Survey of China ; Geological Survey of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Survey of China ; Geological Survey of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Survey of China ; Geological Survey of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102636]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, Zhiqin; Wang, Qin |
| 作者单位 | 1.Ecole Polytech Montreal, Dept Genies Civil Geol & Mines, Montreal, PQ, Canada 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 3.Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA 4.Tribhuvan Univ, Dept Geol, Trichandra Campus, Kathmandu, Nepal 5.Chinese Acad Geol Sci, Inst Geol, Beijing, Peoples R China 6.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Zhiqin,Wang, Qin,Dong, Hanwen,et al. Middle Eocene-Oligocene anatexis and exhumation of the Greater Himalayan Sequence in central Nepal[J]. TERRA NOVA,2021:12. |
| APA | Xu, Zhiqin.,Wang, Qin.,Dong, Hanwen.,Cao, Hui.,Li, Guangwei.,...&Ji, Shaocheng.(2021).Middle Eocene-Oligocene anatexis and exhumation of the Greater Himalayan Sequence in central Nepal.TERRA NOVA,12. |
| MLA | Xu, Zhiqin,et al."Middle Eocene-Oligocene anatexis and exhumation of the Greater Himalayan Sequence in central Nepal".TERRA NOVA (2021):12. |
入库方式： OAI收割
来源：地质与地球物理研究所
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