Detrital zircon U-Pb geochronology of the Siwalik Group of the Nepal Himalaya: implications for provenance analysis
文献类型：期刊论文
| 作者 | Baral, U (Baral, Upendra)1,3,4; Lin, D (Lin, Ding)3,4; Chamlagain, D (Chamlagain, Deepak)2; Baral, U |
| 刊名 | INTERNATIONAL JOURNAL OF EARTH SCIENCES
 |
| 出版日期 | 2016 |
| 卷号 | 105期号:3页码:921-939 |
| 关键词 | Magnetic Polarity Stratigraphy Foreland Basin Deposits India-asia Collision Surai-khola-siwaliks Main Central Thrust Western Nepal Tectonic Evolution Southern Tibet Isotopic Constraints Sedimentary Record |
| DOI | 10.1007/s00531-015-1198-7 |
| 文献子类 | Article |
| 英文摘要 | This paper deals with the provenance analysis of the Neogene foreland basin sediments of the Siwalik Group in the Nepal Himalaya. This study adopts the techniques of the optical petrography and detrital zircon U-Pb ages from two river sections: the Koshi Nadi in eastern Nepal and the Surai Khola in western Nepal Himalaya. The optical petrography data and resulting QFL plot show a "recycled orogeny" field for the studied sandstone samples, indicating northern lithotectonic units; Tethys Himalaya, Higher Himalaya and Lesser Himalaya as the source of the foreland basin sediments. The detrital zircon geochronological data set has clearly revealed that the cluster ages are younger than similar to 1000 Ma; however, the older grains (> 1000 Ma) are significantly fewer. The obtained age spectrum is similar to the Tethys Himalaya and the upper Lesser Himalaya, but the lower Lesser Himalayan rocks were not distinct, which indicates that sediments in the Neogene foreland basin of the Nepal Himalaya were primarily sourced from the Tethys Himalaya and upper Lesser Himalaya. The minor subordinate scattered peaks that roughly correspond to the age of the Higher Himalaya and lower Lesser Himalaya may indicate that a lower proportion of the sediments might have a link with the Higher Himalaya and lower Lesser Himalaya. Therefore, the provenance of the Siwalik Group in the Nepal Himalaya might have witnessed a mixed type of provenance similar to the northwestern Himalaya. |
| 学科主题 | 地质学 |
| 语种 | 英语 |
| WOS记录号 | WOS:000372612100012 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/7727]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Baral, U |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Tribhuvan Univ, Dept Geol, Tri Chandra Multiple Campus, Kathmandu, Nepal 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Baral, U ,Lin, D ,Chamlagain, D ,et al. Detrital zircon U-Pb geochronology of the Siwalik Group of the Nepal Himalaya: implications for provenance analysis[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2016,105(3):921-939. |
| APA | Baral, U ,Lin, D ,Chamlagain, D ,&Baral, U.(2016).Detrital zircon U-Pb geochronology of the Siwalik Group of the Nepal Himalaya: implications for provenance analysis.INTERNATIONAL JOURNAL OF EARTH SCIENCES,105(3),921-939. |
| MLA | Baral, U ,et al."Detrital zircon U-Pb geochronology of the Siwalik Group of the Nepal Himalaya: implications for provenance analysis".INTERNATIONAL JOURNAL OF EARTH SCIENCES 105.3(2016):921-939. |
入库方式： OAI收割
来源：青藏高原研究所
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