Arid
DOI10.1016/j.quageo.2012.04.005
A combined luminescence and radiocarbon dating study of the Ili loess, Central Asia
Song, Yougui1; Li, Chuanxiang1; Zhao, Jingdong2; Cheng, Peng1; Zeng, Mengxiu1
通讯作者Song, Yougui
会议名称13th International Conference on Luminescence and Electron Spin Resonance Dating (LED)
会议日期JUL 10-14, 2011
会议地点Torun, POLAND
英文摘要

Similar to the loess in the Chinese Loess Plateau (CLP), the loess deposits in the Hi basin of Central Asia arid area play an important role in understanding the climate and environmental changes. However, in contrast to the intensively investigated loess deposits in the CLP, the Ili loess is still insufficiently known and poorly understood. The geochronology study of the Ili loess remains controversial. In order to examine the potential of optically stimulated luminescence (OSL) dating for the Ili loess, we carry out a combined luminescence and radiocarbon dating study on a 6.9 m loess section in the south margin of the Ili basin. Polymineral fine grains were investigated by post infrared (IR) OSL using a Multiple-Aliquot Regenerative-dose (MAR) protocol. Radiocarbon dating of organic carbon were carried in a 3 Megavolt (MV) multi-element Accelerator Mass Spectrometry (AMS). The results indicate that the OSL ages are in agreement with the observed stratigraphy in the field, which is well correlated with that of the CLP, but the AMS C-14 ages are much younger than the OSL and assumed stratigraphical ages. Thus, the OSL dating technique may provide an absolute chronology in this loess section. Further methodological approaches and more samples analysis will lead to the improvement of this chronology for high-resolution paleoclimatic interpretation. (c) 2012 Elsevier B.V. All rights reserved.


英文关键词Luminescence dating Radiocarbon dating Ili loess Central Asia
来源出版物QUATERNARY GEOCHRONOLOGY
ISSN1871-1014
EISSN1878-0350
出版年2012
卷号10
页码2-7
出版者ELSEVIER SCI LTD
类型Article;Proceedings Paper
语种英语
国家Peoples R China
收录类别SCI-E ; CPCI-S
WOS记录号WOS:000307195300002
WOS关键词CHINESE LOESS ; TASHKENT REGION ; DEPOSITS ; PALEOSOL ; QUARTZ ; SHAN ; AGES ; XIAN
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/300430
作者单位1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710075, Peoples R China;
2.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Song, Yougui,Li, Chuanxiang,Zhao, Jingdong,et al. A combined luminescence and radiocarbon dating study of the Ili loess, Central Asia[C]:ELSEVIER SCI LTD,2012:2-7.
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