OSL dating of a mega-dune in the eastern Lake Qinghai basin (northeastern Tibetan Plateau) and its implications for Holocene aeolian activities
文献类型：期刊论文
| 作者 | Yang, LinHai1,2; Long, Hao2; Cheng, HongYi3; He, Zhong4,5; Hu, Guangyin1 |
| 刊名 | QUATERNARY GEOCHRONOLOGY
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 49页码:165-171 |
| 关键词 | Lake Qinghai basin Holocene Aeolian sediments OSL dating |
| ISSN号 | 1871-1014 |
| DOI | 10.1016/j.quageo.2018.02.005 |
| 通讯作者 | Long, Hao(longhao@niglas.ac.cn) |
| 英文摘要 | Aeolian sediments are widely distributed in the Lake Qinghai basin of the northeastern Tibetan Plateau (TP), but the history of aeolian activities in the basin is indistinct, and the underlying impacting factors are still poorly understood. In this study, depositional history of a mega-dune from the eastern Lake Qinghai basin was determined by optically stimulated luminescence (OSL) dating. The results show that nearly 30 m thick of sands accumulated during the interval of 7.6 ka, followed by soil formation during the last similar to 5 ka. Together with previously published OSL ages of aeolian sediments, the Holocene aeolian activity in the Lake Qinghai basin was reconstructed as following: (1) The temporary aeolian activity appears to be characterized with a pattern of strengthened intensity during the first half of Holocene but relatively lowered intensity with a gradual decreasing trend afterward; (2) The interval of 7-6 ka in the middle Holocene witnessed a transition from dune activation towards stabilization; (3) A very low sand accumulation rate during the period of 5-3 ka and the contemporaneous extensive palaeosol development imply the least aeolian activity at that period. We inferred that the Holocene aeolian activity in the Lake Qinghai basin was mainly controlled by sediment supply, which was in turn modulated by the lake-level change of Lake Qinghai. Large amounts of sand were available, when the lake level dropped and then beach sands could exposure for deflation. |
| WOS关键词 | HORQIN DUNEFIELD ; CLIMATIC-CHANGE ; NORTHERN CHINA ; GONGHE BASIN ; LUMINESCENCE ; EVOLUTION ; CHRONOLOGY ; DEPOSITS ; AREA ; SEDIMENTATION |
| 资助项目 | National Key Research and Development Program of China[2016YFC0500902] ; National Key Research and Development Program of China[2016YFA0600502] ; National Science Foundation of China[41472144] ; National Science Foundation of China[41401109] ; National Science Foundation of China[41472156] ; Youth Innovation Promotion Association CAS[2015251] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000454376300026 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key Research and Development Program of China ; National Science Foundation of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/51291]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Long, Hao |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, 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.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Gansu, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, LinHai,Long, Hao,Cheng, HongYi,et al. OSL dating of a mega-dune in the eastern Lake Qinghai basin (northeastern Tibetan Plateau) and its implications for Holocene aeolian activities[J]. QUATERNARY GEOCHRONOLOGY,2019,49:165-171. |
| APA | Yang, LinHai,Long, Hao,Cheng, HongYi,He, Zhong,&Hu, Guangyin.(2019).OSL dating of a mega-dune in the eastern Lake Qinghai basin (northeastern Tibetan Plateau) and its implications for Holocene aeolian activities.QUATERNARY GEOCHRONOLOGY,49,165-171. |
| MLA | Yang, LinHai,et al."OSL dating of a mega-dune in the eastern Lake Qinghai basin (northeastern Tibetan Plateau) and its implications for Holocene aeolian activities".QUATERNARY GEOCHRONOLOGY 49(2019):165-171. |
入库方式： OAI收割
来源：地理科学与资源研究所
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