Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating

doi:10.1002/gj.3129

	Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating
	Du, Jinhua 3; Luo, Dan 1; Song, Yougui 1,2; Guo, Xiaohua 2; Fu, Chaofeng 3; Cheng, Peng 1; Kang, Shugang 1
刊名	GEOLOGICAL JOURNAL
	2018-07-01
卷号	53 期号:11 页码:417-426
关键词	Ams C-14 Ili Basin Late Quaternary Loess Osl Reliability Of Ages Tianshan Mountains
DOI	10.1002/gj.3129
文献子类	Article
英文摘要	Reliable chronologies are prerequisites when interpreting proxy records in terrestrial archives of Quaternary climate and environmental change. Optically stimulated luminescence (OSL) dating and accelerator mass spectrometry radiocarbon dating (AMS C-14) are commonly used to date late Quaternary loess deposits in the Chinese Loess Plateau, but the range and reliability of the two methods in Central Asia are still debated. In this study, we investigate both fine-grained quartz OSL and AMS C-14 dating of a late Quaternary loess section located at the northern piedmont of the South Tianshan Mountains in Central Asia and discuss the reliability of the two radiometric dating methods. The results show that the OSL and AMS C-14 ages are generally consistent with the stratigraphic sequence when the ages are younger than 25cal ka BP, which means that both can be used to establish a reliable chronology in the Ili Basin. But beyond this age, the OSL dating method seems to be a more reliable approach. The results also supported previous dates based on medium-grained quartz OSL dating of the Ili loess in the southern piedmont of the North Tianshan Mountains. Radiocarbon ages older than 25cal ka BP should be treated with caution, and attention must be paid to the influence of pedoturbation on OSL signals in the Central Asian loess. Multiple dating approaches for mutual authentication and exploring new dating materials are suggested in further loess chronological research. These findings will be helpful in establishing a reliable timescale and in reconstructing high-resolution environmental change in Central Asia.
WOS关键词	TERRESTRIAL GASTROPOD SHELLS ; REGENERATIVE-DOSE PROTOCOL ; CENTRAL-ASIA ; ILI BASIN ; DUST ACCUMULATION ; NW CHINA ; OSL CHRONOLOGY ; QUARTZ OSL ; LUMINESCENCE ; DEPOSITS
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000439782900033
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5080]
专题	地球环境研究所_古环境研究室
通讯作者	Song, Yougui
作者单位	1.Chinese Acad Sci, Inst Earth & Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 2.Baylor Univ, Dept Geosci, Geoluminescence Dating Res Lab, Waco, TX 76798 USA 3.Changan Univ, Sch Geosci & Land Resources, Minist Educ China, Key Lab Western Mineral Resources & Geol Engn, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Du, Jinhua,Luo, Dan,Song, Yougui,et al. Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating[J]. GEOLOGICAL JOURNAL,2018,53(11):417-426.
APA	Du, Jinhua.,Luo, Dan.,Song, Yougui.,Guo, Xiaohua.,Fu, Chaofeng.,...&Kang, Shugang.(2018).Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating.GEOLOGICAL JOURNAL,53(11),417-426.
MLA	Du, Jinhua,et al."Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating".GEOLOGICAL JOURNAL 53.11(2018):417-426.