The equivalent dose of different grain size quartz fractions from lakeshore sediments in the arid region of north China
文献类型：期刊论文
| 作者 | Fan, Yu-Xin2; Zhao, Hui1,2; Chen, Fa-Hu2 |
| 刊名 | QUATERNARY GEOCHRONOLOGY
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 5期号:2-3页码:205-211 |
| 关键词 | Equivalent dose OSL SAR Grain size Quartz Lakeshore sediments Arid region |
| ISSN号 | 1871-1014 |
| DOI | 10.1016/j.quageo.2009.05.012 |
| 通讯作者 | Zhao, Hui(hzhao@lzb.ac.cn) |
| 英文摘要 | Equivalent dose (D(e)) values were measured by using medium aliquots of different grain size quartz fractions of five lakeshore sediments from the arid region of north China. There are two different relationships between De values and grain sizes of these five samples. The first relationship is that the D(e) values obtained from various grain sizes are in agreement within 1 delta errors. The second relationship is that D(e) values are similar to each other for fractions between 125 and 300 pm, while the D(e) value of the 63-90 mu m fraction is 40 similar to 55% smaller than others. For example, the D(e) values obtained for sample #3 are 20.15 +/- 1.19 Gy, 19.80 +/- 0.83 Gy and 20.93 +/- 1.06 Gy for fractions of 90-125, 125-150 and 250-300 mu m respectively, but are 10.79 +/- 0.84 Gy for the 63-90 mu m fraction. The second relationship can't be interpreted by previous studies of both dosimetry and heterogeneous bleaching. It is deduced for sample #2, #3 and #6 that fine particles (<90 mu m) intruded after the dominant sedimentation. Comparison of OSL ages from different grain size fractions of sample #2 with a radiocarbon age from the same lithologic layer supports that fractions coarser than 125 pm yield more reliable burial ages, while the fraction finer than 90 pm yields underestimated ages for some lakeshore sediments from this arid region. (C) 2009 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI ; ISTP |
| WOS关键词 | OPTICALLY STIMULATED LUMINESCENCE ; POLYMINERAL FINE GRAINS ; LATE QUATERNARY ; SINGLE ; ATTENUATION ; ALIQUOT ; RATES ; LAKE |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000276666900024 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556385 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, Hui |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, CAEP, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Yu-Xin,Zhao, Hui,Chen, Fa-Hu. The equivalent dose of different grain size quartz fractions from lakeshore sediments in the arid region of north China[J]. QUATERNARY GEOCHRONOLOGY,2010,5(2-3):205-211. |
| APA | Fan, Yu-Xin,Zhao, Hui,&Chen, Fa-Hu.(2010).The equivalent dose of different grain size quartz fractions from lakeshore sediments in the arid region of north China.QUATERNARY GEOCHRONOLOGY,5(2-3),205-211. |
| MLA | Fan, Yu-Xin,et al."The equivalent dose of different grain size quartz fractions from lakeshore sediments in the arid region of north China".QUATERNARY GEOCHRONOLOGY 5.2-3(2010):205-211. |
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来源：寒区旱区环境与工程研究所
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