Palaeodunes intercalated in loess strata from the western Chinese Loess Plateau: Timing and palaeoclimatic implications

ISL OpenIR > 青海盐湖研究所知识仓储

	Palaeodunes intercalated in loess strata from the western Chinese Loess Plateau: Timing and palaeoclimatic implications
	Long, Hao 1,2,3; Lai, ZhongPing1 ; Fuchs, Markus 2; Zhang, JingRan 1,3; Yang, Linhai 1
	2012-06-14
发表期刊	QUATERNARY INTERNATIONAL
卷号	263 页码:37-45
摘要	Dune systems represent important palaeoenvironmental archives and therefore provide valuable information on past climate conditions of dryland regions. This study reports on several palaeodunes (thickness ca. 10-20 m) intercalated in thick loess accumulations, located in the Lanzhou area of the western Chinese Loess Plateau. The intercalated dune sands are well-sorted and have a typical aeolian dune structure, with distinct cross-bedded sand layers. The chronology for these palaeodunes and the related loess sediments was established by quartz optically stimulated luminescence (OSL) dating of 19 samples. The dating results indicate that sand dune accumulation occurred at ca. 35-25 ka, which implies a period of increased aridity during dune formation. This interpretation is in contrast to previously retrieved data from lake archives of the nearby deserts (e.g. Tengger and Badain Jaran desert), indicating a humid episode during marine isotope stage 3 (MIS 3). The previously proposed humid MIS 3a may not be universal over all of northwest China. (C) 2011 Elsevier Ltd and INQUA. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5586
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Luminescence Dating Grp, Xining 810008, Qinghai, Peoples R China 2.Univ Bayreuth, Inst Geog, D-95440 Bayreuth, Germany 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Long, Hao,Lai, ZhongPing,Fuchs, Markus,et al. Palaeodunes intercalated in loess strata from the western Chinese Loess Plateau: Timing and palaeoclimatic implications[J]. QUATERNARY INTERNATIONAL,2012,263:37-45.
APA	Long, Hao,Lai, ZhongPing,Fuchs, Markus,Zhang, JingRan,&Yang, Linhai.(2012).Palaeodunes intercalated in loess strata from the western Chinese Loess Plateau: Timing and palaeoclimatic implications.QUATERNARY INTERNATIONAL,263,37-45.
MLA	Long, Hao,et al."Palaeodunes intercalated in loess strata from the western Chinese Loess Plateau: Timing and palaeoclimatic implications".QUATERNARY INTERNATIONAL 263(2012):37-45.