Arid
DOI10.1177/0959683614523804
Dry early Holocene revealed by sand dune accumulation chronology in Bayanbulak Basin (Xinjiang, NW China)
Long, Hao1,2; Shen, Ji1; Tsukamoto, Sumiko2; Chen, Jianhui3; Yang, Linhai4; Frechen, Manfred2
通讯作者Long, Hao
来源期刊HOLOCENE
ISSN0959-6836
EISSN1477-0911
出版年2014
卷号24期号:5页码:614-626
英文摘要

Understanding the Holocene climate changes (especially moisture variation) and their mechanisms in the semiarid-arid Central Asia (SCA) is very important, as water availability is crucial for sustainable developments in this area. This study presents chronostratigraphy of an aeolian sedimentary sequence from Bayanbulak Basin (Xinjiang, NW China), aiming to infer the Holocene moisture history in the SCA. Luminescence dating technique was selected to construct the age framework of the study section. Since the luminescence signal intensity of quartz from the samples was too low to be detected, feldspar was used as an alternative dosimeter. A newly developed post-infrared (IR) IR-stimulated luminescence (IRSL) (pIRIR) dating protocol on K-feldspar was applied to determine the ages of samples. A set of tests on luminescence characteristics was performed and demonstrate that this method is suitable and the resultant ages are reliable. Combined with the stratigraphic investigation on the sand dune/palaeosol section, the results imply a very dry climatic condition characterized by sand dune accumulation at similar to 9-8 kyr, and a wet interval of 5-1.6 kyr when a soil layer was formed. This moisture variation pattern is consistent with that inferred from many lacustrine records in the SCA, suggesting a widespread dry period at 11-8 kyr. The present results appear to challenge a new stalagmite delta O-18 sequence, located nearby to Bayanbulak Basin, which instead suggested a humid early Holocene.


英文关键词Asian monsoon Holocene moisture variation luminescence dating sand dune semiarid-arid Central Asia Westerlies
类型Article
语种英语
国家Peoples R China ; Germany
收录类别SCI-E
WOS记录号WOS:000337290800009
WOS关键词ARID CENTRAL-ASIA ; NORTHERN CHINA ; BOSTEN LAKE ; MOISTURE EVOLUTION ; INDIAN MONSOON ; LUMINESCENCE ; FELDSPAR ; NEBRASKA ; DYNAMICS ; RECORDS
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/2XILL650/182409
作者单位1.Chinese Acad Sci NIGLAS, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China;
2.LIAG, Hannover, Germany;
3.Lanzhou Univ, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China;
4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Beijing 100864, Peoples R China
推荐引用方式
GB/T 7714
Long, Hao,Shen, Ji,Tsukamoto, Sumiko,et al. Dry early Holocene revealed by sand dune accumulation chronology in Bayanbulak Basin (Xinjiang, NW China)[J]. 兰州大学, 中国科学院西北生态环境资源研究院,2014,24(5):614-626.
APA Long, Hao,Shen, Ji,Tsukamoto, Sumiko,Chen, Jianhui,Yang, Linhai,&Frechen, Manfred.(2014).Dry early Holocene revealed by sand dune accumulation chronology in Bayanbulak Basin (Xinjiang, NW China).HOLOCENE,24(5),614-626.
MLA Long, Hao,et al."Dry early Holocene revealed by sand dune accumulation chronology in Bayanbulak Basin (Xinjiang, NW China)".HOLOCENE 24.5(2014):614-626.
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