Fake age hiatus in a loess section revealed by OSL dating of calcrete nodules
文献类型：期刊论文
| 作者 | Zhang, Junjie1; Li, Sheng-Hua1; Sun, Jimin2,3; Hao, Qingzhen2,3 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2018-04-15 |
| 卷号 | 155页码:139-145 |
| 关键词 | OSL ages Chinese Loess Plateau Age hiatus Calcrete nodules Dose rate |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2017.11.016 |
| 文献子类 | Article |
| 英文摘要 | Optically stimulated luminescence (OSL) dating on potassium feldspar has been performed with high resolution in the Luochuan section in the Chinese Loess Plateau. An age hiatus of similar to 15 ka is found at the top of L2 layer within the loess/paleosol sequences. The age of the potassium feldspar from the calcrete nodules along the S1/L2 boundary is significantly older than those of the paleosol and loess samples lying above and below the boundary. The age overestimation of the potassium feldspar from calcrete nodules is caused by the underestimation of the dose rate, because accretion of carbonates could dilute the radioactivity. The age hiatus at the top of L2 also resulted from the underestimation of the dose rates of four loess samples beneath this hiatus. These four loess samples have high CaO concentrations. Ages of these samples are overestimated in the similar way as the nodules, but with smaller degrees. All results suggest that the accretion of carbonates happened after the loess deposition. |
| WOS关键词 | CHINESE LOESS ; K-FELDSPAR ; PALEOCLIMATIC IMPLICATIONS ; PLATEAU ; LUOCHUAN ; LUMINESCENCE ; VEGETATION ; SEQUENCES ; DEPOSITS ; GRAINS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000428006300012 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Research Grant Council of the Hong Kong SAR, China(7033/12P ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; 1730711) ; 1730711) ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; 1730711) ; 1730711) ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; 1730711) ; 1730711) ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; Research Grant Council of the Hong Kong SAR, China(7033/12P ; 1730711) ; 1730711) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/82934]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li, Sheng-Hua |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, POB 9825, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Junjie,Li, Sheng-Hua,Sun, Jimin,et al. Fake age hiatus in a loess section revealed by OSL dating of calcrete nodules[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,155:139-145. |
| APA | Zhang, Junjie,Li, Sheng-Hua,Sun, Jimin,&Hao, Qingzhen.(2018).Fake age hiatus in a loess section revealed by OSL dating of calcrete nodules.JOURNAL OF ASIAN EARTH SCIENCES,155,139-145. |
| MLA | Zhang, Junjie,et al."Fake age hiatus in a loess section revealed by OSL dating of calcrete nodules".JOURNAL OF ASIAN EARTH SCIENCES 155(2018):139-145. |
入库方式： OAI收割
来源：地质与地球物理研究所
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