Isochron dating of sediments using luminescence of K-feldspar grains
文献类型：期刊论文
| 作者 | Li, Bo1; Li, Sheng-Hua1; Wintle, Ann G.2; Zhao, Hui3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
 |
| 出版日期 | 2008-06-26 |
| 卷号 | 113期号:F2页码:15 |
| ISSN号 | 0148-0227 |
| DOI | 10.1029/2007JF000900 |
| 通讯作者 | Li, Bo() |
| 英文摘要 | A new method for dating well-bleached sediments is presented, with results for thirteen samples from China. The method uses an isochron constructed from the measurement of natural radiation doses received by potassium-feldspar grains in a range of grain sizes using the infrared stimulated luminescence (IRSL) signal. The age of deposition of the sediment is calculated from this isochron and from the internal dose rate to the grains from (40)K and (87)Rb in the crystal lattice. This procedure appears to overcome age underestimation due to anomalous fading, a phenomenon that has precluded conventional luminescence dating of K-feldspars and would be applicable to K-feldspars for which the natural dose is beyond the linear dose response region. Also, since the isochron IRSL method is reliant on only the internal dose rate, it overcomes problems related to (1) changes in past dose rate due to postdepositional migration of radionuclides, (2) changes in water content as water-lain sediments dry out, (3) spatial heterogeneity in the gamma dose rate, and (4) uncertainties in the cosmic ray dose rate during the period of sample burial. |
| 收录类别 | SCI |
| WOS关键词 | MU US DESERT ; OPTICALLY STIMULATED LUMINESCENCE ; BETA-DOSE ATTENUATION ; SINGLE-ALIQUOT OSL ; DUNE SANDS ; CHINA ; QUARTZ ; IRSL ; THERMOLUMINESCENCE ; DEPOSITS |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000257311700002 |
| 出版者 | AMER GEOPHYSICAL UNION |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556132 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Bo |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong 999077, Hong Kong, Peoples R China 2.Univ Wales, Inst Geog & Earth Sci, Aberystwyth SY23 3DB, Dyfed, Wales 3.Chinese Acad Sci, Key Lab Desert & Desertificat, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Bo,Li, Sheng-Hua,Wintle, Ann G.,et al. Isochron dating of sediments using luminescence of K-feldspar grains[J]. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,2008,113(F2):15. |
| APA | Li, Bo,Li, Sheng-Hua,Wintle, Ann G.,&Zhao, Hui.(2008).Isochron dating of sediments using luminescence of K-feldspar grains.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,113(F2),15. |
| MLA | Li, Bo,et al."Isochron dating of sediments using luminescence of K-feldspar grains".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 113.F2(2008):15. |
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来源：寒区旱区环境与工程研究所
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