Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jseaes.2017.11.017 |
Optical dating of eolian deposits since the last interglacial along the northern margin of the Chinese Loess Plateau | |
Lu, Tongyan1; Sun, Jimin2,3; Gong, Zhijun4 | |
通讯作者 | Lu, Tongyan |
来源期刊 | JOURNAL OF ASIAN EARTH SCIENCES
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ISSN | 1367-9120 |
EISSN | 1878-5786 |
出版年 | 2018 |
卷号 | 155页码:154-163 |
英文摘要 | Understanding the chronology of eolian sand-loess-paleosol sequences along the northern margin of the Chinese Loess Plateau (CLP) is crucial for comprehending climate change and the advance and retreat of the adjacent Mu Us desert. In this study, a sand-loess-soil sequence from the northern margin of the CLP was studied by applying the single aliquot regenerative (SAR) protocol to quartz grains, and the multi-elevated-temperature post-IR IRSL (MET-pIRIR) protocol to K-feldspar grains. For equivalent dose (D-c) determination, 63-90 mu m quartz and K-feldspar grains were used. Our results indicate that the MET-pIRIR ages of K-feldspar grains in this sequence range from 94.4 +/- 7.0 ka to 148.3 +/- 13.3 ka for the last interglacial paleosol (S1); for the upper part of the section, quartz-based SAR-OSL dating was used, yielding ages spanning from 5.8 +/- 0.4 ka to 35.9 +/- 4.1 ka. After cross-checking these results with previously-reported isochron OSL and TL ages, the reliability of the METpIRIR protocol when applied to the last interglacial paleosol was confirmed. Based on a new OSL chronology of the Shimao profile, the studied eolian deposits can be broadly correlated with the last glacial-interglacial cycle, but their dating also points to sedimentary hiatuses occurring at 94.4 ka, 35.9 ka and 5.8 ka, due most probably to strong wind erosion caused by intensified cold-dry winter monsoonal circulations during the last glacial maxima. |
英文关键词 | OSL Quartz K-feldspar SAR MET-pIRIR |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000428006300014 |
WOS关键词 | FINE-GRAINED QUARTZ ; DOSE-RESPONSE CURVES ; MET-PIRIR SIGNALS ; MU US DESERT ; K-FELDSPAR ; LUMINESCENCE SIGNALS ; RESOLUTION OSL ; SIZED QUARTZ ; PROTOCOL ; HOLOCENE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | 中国科学院地质与地球物理研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/210652 |
作者单位 | 1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China; 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China; 3.Univ Chinese Acad Sci, Beijing, Peoples R China; 4.East China Univ Technol, Sch Earth Sci, Nanchang, Jiangxi, Peoples R China |
推荐引用方式 GB/T 7714 | Lu, Tongyan,Sun, Jimin,Gong, Zhijun. Optical dating of eolian deposits since the last interglacial along the northern margin of the Chinese Loess Plateau[J]. 中国科学院地质与地球物理研究所,2018,155:154-163. |
APA | Lu, Tongyan,Sun, Jimin,&Gong, Zhijun.(2018).Optical dating of eolian deposits since the last interglacial along the northern margin of the Chinese Loess Plateau.JOURNAL OF ASIAN EARTH SCIENCES,155,154-163. |
MLA | Lu, Tongyan,et al."Optical dating of eolian deposits since the last interglacial along the northern margin of the Chinese Loess Plateau".JOURNAL OF ASIAN EARTH SCIENCES 155(2018):154-163. |
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