干旱区生态环境知识资源中心(Arid): Optical dating of Holocene paleosol development and climate changes in the Yili Basin, arid central Asia

Arid

DOI	10.1177/0959683619831432
	Optical dating of Holocene paleosol development and climate changes in the Yili Basin, arid central Asia
	Wang, Leibin 1; Jia, Jia 2; Zhao, Hui 3; Liu, Hao 4; Duan, Yanwu 4; Xie, Haichao 4; Zhang, David D.1; Chen, Fahu4,5
通讯作者	Wang, Leibin ; Jia, Jia
来源期刊	HOLOCENE
ISSN	0959-6836
EISSN	1477-0911
出版年	2019
卷号	29 期号:6 页码:1068-1077
英文摘要	Optically stimulated luminescence (OSL) dating was conducted on the K-feldspar and quartz fractions of a Holocene loess-paleosol sequence in the Yili Basin, in the core area of arid central Asia (ACA). Age overestimation using the post-IR IR (pIR(50)IR(170)) signals from feldspar was observed for paleosols, because of poor bleaching prior to deposition. Therefore, a reliable age framework for the studied section was established using OSL dating of coarse-grained quartz, combined with a Bacon age model. A total of 18 OSL ages were obtained from a 2.5-m-loess/paleosol sequence with age range of 17.4-0.4 ka. Magnetic and grain-size proxies were used to reconstruct environmental changes during the studied interval, and the results indicate that paleosol development commenced at ~6 ka in the Yili Basin, which is consistent with previous studies in the Xinjiang region. Dust accumulation rates (DARs) and end-member analysis (EMA) of the grain-size frequency distributions were used to infer variations in the Westerlies during the Holocene, and the results suggest that the Westerlies were the main source of excess moisture in ACA during the studied interval.
英文关键词	Arid central Asia K-feldspar pIRIR dating loess-paleosol sequence quartz optically 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:000485295500011
WOS关键词	CHINESE LOESS ; GRAIN-SIZE ; QUARTZ OSL ; ILI BASIN ; FLUVIAL SEDIMENTS ; K-FELDSPARS ; LUMINESCENCE ; XINJIANG ; DEPOSITS ; DUST
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
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/2XILL650/216132
作者单位	1.Guangzhou Univ, Ctr Climate & Environm Changes, Sch Geog Sci, Guangzhou 510006, Guangdong, Peoples R China; 2.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Zhejiang, Peoples R China; 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Beijing, Peoples R China; 4.Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou, Gansu, Peoples R China; 5.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Leibin,Jia, Jia,Zhao, Hui,et al. Optical dating of Holocene paleosol development and climate changes in the Yili Basin, arid central Asia[J]. 兰州大学, 中国科学院西北生态环境资源研究院,2019,29(6):1068-1077.
APA	Wang, Leibin.,Jia, Jia.,Zhao, Hui.,Liu, Hao.,Duan, Yanwu.,...&Chen, Fahu.(2019).Optical dating of Holocene paleosol development and climate changes in the Yili Basin, arid central Asia.HOLOCENE,29(6),1068-1077.
MLA	Wang, Leibin,et al."Optical dating of Holocene paleosol development and climate changes in the Yili Basin, arid central Asia".HOLOCENE 29.6(2019):1068-1077.