Luminescence dating of a fluvial sequence using different grain size fractions and implications on Holocene flooding activities in Weihe Basin, central
文献类型：期刊论文
| 作者 | He, Zhong1,2,4; Long, Hao2; Yang, Linhai3; Zhou, Jie1 |
| 刊名 | QUATERNARY GEOCHRONOLOGY
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 49页码:123-130 |
| ISSN号 | 1871-1014 |
| 关键词 | OSL dating Fluvial sequence Flooding activities Weihe Basin Chinese Loess Plateau |
| DOI | 10.1016/j.quageo.2018.05.007 |
| 通讯作者 | Long, Hao(longhao@niglas.ac.cn) |
| 英文摘要 | Palaeoflood reconstruction is of great importance to extend the flooding records and improve the understanding of their relationships with climatic change and geomorphologic evolution. As a large active rift basin in central China, Weihe Basin subsided and infilled in response to the uplift of the Tibetan Plateau and Asian monsoon variations. Many rivers drain out the erodible Chinese Loess Plateau with tremendous detritus and then build up considerable fluvial sequences. Scarcity of organic material and potential poor bleaching make the fluvial deposits difficult to date with radiocarbon and optically stimulated luminescence (OSL) technique, and as a result hinder the palaeoflood reconstruction. This study attempts to compare OSL ages resulted from different grain size fractions of quartz, and then cross-checks with independent radiocarbon ages, aiming to choose proper method to reconstruct the chronology of a fluvial sequence from the valley bank of Shichuan River, a tributary of Weihe River. The results show that the coarse quartz grains experienced better bleaching than fine quartz grains, and the comparison with AMS C-14 ages further confirms the efficient bleaching of the coarse quartz grains before burial. The sufficient bleaching of the coarse fraction could be attributed to sediment source from the upstream mountainous areas and long-distance transportation. Finally, five palaeoflood events were identified at the times of approximately 2.3-2.6 ka, 3.7-3.9 ka, 4.1-4.7 ka, 6.2-6.8 ka, and 8.9-9.2 ka, corresponding to the periods with intensified rainstorm and vegetation degradation associated with climatic deterioration. This study provides a regional evidence to improve our understanding of the response of river system evolution to climate change. |
| 收录类别 | SCI ; ISTP |
| WOS关键词 | MIDDLE YELLOW-RIVER ; CHINESE LOESS PLATEAU ; HYDRO-CLIMATIC EVENTS ; SLACKWATER DEPOSITS ; PALEOFLOOD HYDROLOGY ; LATE PLEISTOCENE ; VALLEY ; REACHES ; MONSOON ; QUARTZ |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000454376300020 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558210 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Long, Hao |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil & Water Conservat, Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci NIGLAS, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Zhong,Long, Hao,Yang, Linhai,et al. Luminescence dating of a fluvial sequence using different grain size fractions and implications on Holocene flooding activities in Weihe Basin, central[J]. QUATERNARY GEOCHRONOLOGY,2019,49:123-130. |
| APA | He, Zhong,Long, Hao,Yang, Linhai,&Zhou, Jie.(2019).Luminescence dating of a fluvial sequence using different grain size fractions and implications on Holocene flooding activities in Weihe Basin, central.QUATERNARY GEOCHRONOLOGY,49,123-130. |
| MLA | He, Zhong,et al."Luminescence dating of a fluvial sequence using different grain size fractions and implications on Holocene flooding activities in Weihe Basin, central".QUATERNARY GEOCHRONOLOGY 49(2019):123-130. |
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来源：寒区旱区环境与工程研究所
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