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A luminescence dating study of loess deposits from the Yili River basin in western China
文献类型：期刊论文
| 作者 | ChongYi, E.1,2,3; Lai, ZhongPing2 ; Sun, YongJuan2,4; Hou, GuangLiang1; Yu, LuPeng2,4; Wu, ChengYong1
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| 刊名 | QUATERNARY GEOCHRONOLOGY
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| 出版日期 | 2012-07-01 |
| 卷号 | 10页码:50-55 |
| 关键词 | Quartz Luminescence Dating Zeketai (Zkt) Loess Section Yili River BasIn Of XInjiang ProvInce In chIna Comparison With C-14 Ages Palaeoenvironmental Implications |
| 文献子类 | Article |
| 英文摘要 | The loess deposits surrounding the high mountainous regions of Central Asia play an important role in understanding environmental changes in Eurasia on orbital and sub-orbital timescales. However, problems with dating Central Asian loess have limited the interpretation of climatic and environmental data, especially on sub-orbital timescales. We selected a controversial loess section, Zeketai (ZKT, with a thickness of 23 m), in the Yili basin in Xinjiang Province in western China, to establish a detailed and systematic Optically Stimulated Luminescence (OSL) chronology. Quartz grains of 38-63 mu m were isolated from 15 samples and the single-aliquot regenerative-dose (SAR) protocol was employed for D-e determination. OSL ages are in stratigraphic order and range from 13.8 +/- 1 to 72 +/- 6 ka, suggesting continuous loess accumulation during the last glaciation. We compared these dating results with that of the previously published fine-grain sized quartz (4-11 mu m) using simplified multiple aliquot regenerative-dose (SMAR) protocol, and with the previous published radiocarbon dating (C-14) ages on snail shells. With the exception of three young samples from the upper 6 m of the section, the SMAR dating results are basically consistent with the results using the SAR protocol. Both the SMAR and SAR OSL ages are consistently older than the C-14 ages, and the radiocarbon date results should be used with caution since they appear to have been underestimated. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS关键词 | REGENERATIVE-DOSE PROTOCOL ; CENTRAL-ASIA ; GROWTH-CURVE ; UPPER PLEISTOCENE ; QUARTZ ; OSL ; TAJIKISTAN ; BOUNDARY ; PLATEAU ; RECORD |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000307195300009 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/5641]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 中国科学院青海盐湖研究所 |
| 作者单位 | 1.Qinghai Normal Univ, Coll Biol & Geog, Xining 810000, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Luminescence Dating Lab, Xining 810008, Peoples R China 3.Qinghai Normal Univ, Key Lab Qinghai Tibetan Plateau Environm & Resour, MOE, Xining 810000, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | ChongYi, E.,Lai, ZhongPing,Sun, YongJuan,et al. A luminescence dating study of loess deposits from the Yili River basin in western China[J]. QUATERNARY GEOCHRONOLOGY,2012,10:50-55. |
| APA | ChongYi, E.,Lai, ZhongPing,Sun, YongJuan,Hou, GuangLiang,Yu, LuPeng,&Wu, ChengYong.(2012).A luminescence dating study of loess deposits from the Yili River basin in western China.QUATERNARY GEOCHRONOLOGY,10,50-55. |
| MLA | ChongYi, E.,et al."A luminescence dating study of loess deposits from the Yili River basin in western China".QUATERNARY GEOCHRONOLOGY 10(2012):50-55. |
入库方式： OAI收割
来源：青海盐湖研究所
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