Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating | |
Du, Jinhua3; Luo, Dan1; Song, Yougui1,2; Guo, Xiaohua2; Fu, Chaofeng3; Cheng, Peng1; Kang, Shugang1 | |
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. |
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