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Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating
Song, Yougui1,3; Luo, Dan1; Du, Jinhua2; Kang, Shugang1; Cheng, Peng1; Fu, Chaofeng2; Guo, Xiaohua3
2018-07-01
Source PublicationGEOLOGICAL JOURNAL
Volume53Issue:11Pages:417-426
SubtypeArticle
AbstractReliable 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.
KeywordAms C-14 Ili Basin Late Quaternary Loess Osl Reliability Of Ages Tianshan Mountains
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/gj.3129
WOS KeywordTERRESTRIAL GASTROPOD SHELLS ; REGENERATIVE-DOSE PROTOCOL ; CENTRAL-ASIA ; ILI BASIN ; DUST ACCUMULATION ; NW CHINA ; OSL CHRONOLOGY ; QUARTZ OSL ; LUMINESCENCE ; DEPOSITS
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000439782900033
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5080
Collection古环境研究室
Corresponding AuthorSong, Yougui
Affiliation1.Chinese Acad Sci, Inst Earth & Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China
2.Changan Univ, Sch Geosci & Land Resources, Minist Educ China, Key Lab Western Mineral Resources & Geol Engn, Xian, Shaanxi, Peoples R China
3.Baylor Univ, Dept Geosci, Geoluminescence Dating Res Lab, Waco, TX 76798 USA
Recommended Citation
GB/T 7714
Song, Yougui,Luo, Dan,Du, Jinhua,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 Song, Yougui.,Luo, Dan.,Du, Jinhua.,Kang, Shugang.,Cheng, Peng.,...&Guo, Xiaohua.(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 Song, Yougui,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.
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