干旱区生态环境知识资源中心(Arid): Formation age of Jiudong Sandy Land, in the western Hexi Corridor, NW China

Arid

DOI	10.1016/j.quaint.2019.02.026
	Formation age of Jiudong Sandy Land, in the western Hexi Corridor, NW China
	Chen, Dianbao; Pan, Baotian; Hu, Xiaofei; Wang, Ying; Pan, Xumin; Wang, Wei; Zhang, Jian; Pang, Hongli
通讯作者	Chen, Dianbao
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2019
卷号	513 页码:47-55
英文摘要	Jiudong Sandy Land in the western Hexi Corridor is one of the dust source regions of the Chinese Loess Plateau and is highly sensitive to climate change. Determination of when this sandy land formed would help resolve major questions about the desertification history of inland Asia; however, until now, this has been hindered by the lack of depositional records. Here, we report the results of optically stimulated luminescence (OSL) dating, grain size and grain surface analyses from a new drill core obtained from Jiudong Sandy Land. Our aims are to constrain its age of formation. Analysis of sedimentary facies reveals that the sediments in the lower part of the core (35.2-16.7 m) were deposited by fluvial processes, but that the sediments in the upper part consist primarily of aeolian sand. The OSL dating results indicate that the transition from fluvial to aeolian facies occurred at similar to 89.8 +/- 7.6 ka. Combined with various loess-based environmental proxies from Jiudong Basin, the new lithoand chronostratigraphic evidence reported in this study indicates that the age of similar to 89.8 +/- 7.6 ka represents the formation age of the Jiudong Sandy Land.
英文关键词	Facies analysis Scanning electron microscopy Optically stimulated luminescence Jiudong sandy land
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000469328000006
WOS关键词	EAST-ASIAN MONSOON ; NORTHWEST CHINA ; TENGGER DESERT ; DRILL CORE ; LOESS ; EVOLUTION ; QUARTZ ; SHAN ; PLEISTOCENE ; CHRONOLOGY
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218237
作者单位	Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Dianbao,Pan, Baotian,Hu, Xiaofei,et al. Formation age of Jiudong Sandy Land, in the western Hexi Corridor, NW China[J]. 兰州大学,2019,513:47-55.
APA	Chen, Dianbao.,Pan, Baotian.,Hu, Xiaofei.,Wang, Ying.,Pan, Xumin.,...&Pang, Hongli.(2019).Formation age of Jiudong Sandy Land, in the western Hexi Corridor, NW China.QUATERNARY INTERNATIONAL,513,47-55.
MLA	Chen, Dianbao,et al."Formation age of Jiudong Sandy Land, in the western Hexi Corridor, NW China".QUATERNARY INTERNATIONAL 513(2019):47-55.