Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.palaeo.2013.11.003 |
Quartz and K-feldspar optical dating chronology of eolian sand and lacustrine sequence from the southern Ulan Buh Desert, NW China: Implications for reconstructing late Pleistocene environmental evolution | |
Li, Guoqiang1; Jin, Ming1; Wen, Lijuan1; Zhao, Hui2; Madsen, David1; Liu, Xiaokang1; Wu, Duo1; Chen, Fahu1 | |
通讯作者 | Li, Guoqiang |
来源期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY |
ISSN | 0031-0182 |
EISSN | 1872-616X |
出版年 | 2014 |
卷号 | 393页码:111-121 |
英文摘要 | The Ulan Buh Desert (UBD), in southwestern Inner Mongolia, is one of the main dune fields and dust source areas in northern China. In the southern UBD, consisting primarily of high pyramidal and complex sand dunes, the process of desert evolution remains unclear due to a lack of depositional records and adequate age controls. In this study, we present the stratigraphic record of a 120.5 m deep core (WL12ZK-1) collected in this sandy desert region. A 22.6 m thick deposit of lacustrine clay/silty clay bracketed between 37 m (top) and 54.7 m (bottom) thick layers of eolian sand, provides evidence of a desert-lake-desert sequence in the southern UBD. Quartz Optical Stimulated Luminescence (OSL) and K-feldspar multi-elevated-temperature post-IR IRSL (Met-pIRIR) dating technologies were employed to provide a chronology for this sequence. Internal checks of the quartz OSL dating indicate that the quartz single-aliquot regenerative-dose protocol is appropriate for equivalent dose determination and that the quartz ages younger than 60 ka are acceptable. The reliability of the K-feldspar ages is confirmed by both internal checks and an age-temperature plot. The combined stratigraphy and chronology indicate a sand desert landscape developed in the southern UBD at least similar to 232 ka ago, and that a paleolake was present beginning sometime before similar to 155 ka and lasting until similar to 87 ka, with several possible lake level fluctuations. Desert landforms developed synchronously in the southern and northern UBD after the paleolake regressed. A combination of tectonic activity and climate change may be responsible for this sequence. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Ulan Buh Desert China Pleistocene Arid landscape evolution Optical stimulated luminescence dating |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000331024900009 |
WOS关键词 | EAST-ASIAN MONSOON ; SINGLE-ALIQUOT ; TENGGER DESERT ; QINGHAI LAKE ; LUMINESCENCE ; GRAINS ; OSL ; SEDIMENTS ; PROTOCOL ; LOESS |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
来源机构 | 兰州大学 ; 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184088 |
作者单位 | 1.Lanzhou Univ, Res Sch Arid Environm & Climate Change, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China; 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Guoqiang,Jin, Ming,Wen, Lijuan,et al. Quartz and K-feldspar optical dating chronology of eolian sand and lacustrine sequence from the southern Ulan Buh Desert, NW China: Implications for reconstructing late Pleistocene environmental evolution[J]. 兰州大学, 中国科学院西北生态环境资源研究院,2014,393:111-121. |
APA | Li, Guoqiang.,Jin, Ming.,Wen, Lijuan.,Zhao, Hui.,Madsen, David.,...&Chen, Fahu.(2014).Quartz and K-feldspar optical dating chronology of eolian sand and lacustrine sequence from the southern Ulan Buh Desert, NW China: Implications for reconstructing late Pleistocene environmental evolution.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,393,111-121. |
MLA | Li, Guoqiang,et al."Quartz and K-feldspar optical dating chronology of eolian sand and lacustrine sequence from the southern Ulan Buh Desert, NW China: Implications for reconstructing late Pleistocene environmental evolution".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 393(2014):111-121. |
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