干旱区生态环境知识资源中心(Arid): Variations in the sensitivity of the optically stimulated luminescence from quartz in the Xifeng section: A spatiotemporal comparison across the Chinese Loess Plateau since the last interglaciation

Arid

DOI	10.1016/j.quageo.2022.101353
	Variations in the sensitivity of the optically stimulated luminescence from quartz in the Xifeng section: A spatiotemporal comparison across the Chinese Loess Plateau since the last interglaciation
	Li, Jiao; Yang, Li-Rong
通讯作者	Yang, LR
来源期刊	QUATERNARY GEOCHRONOLOGY
ISSN	1871-1014
EISSN	1878-0350
出版年	2022
卷号	72
英文摘要	The sensitivity of the optically stimulated luminescence (OSL) from quartz is thought to be mainly influenced by source rock (crystallization temperature and quartz defect types) and depositional history (irradiation/bleaching cycles). In this study, the OSL sensitivity of quartz of different grain sizes from loess (L1) and paleosol (S1) layers at the Xifeng section of the Chinese Loess Plateau was analyzed. The OSL sensitivity of the samples from the Xifeng section shows a distinct difference between glacial and interglacial cycles, which is consistent with the patterns observed from magnetic susceptibility (MS) and grain sizes. The highest OSL sensitivity is observed in S1, which is twelve times the lowest sensitivity observed in L1. Moreover, the contribution of the fast component of quartz OSL from the paleosol accounts for more than 90% of the total OSL signal. In contrast, the middle and slow components contribute more in loess, and a significant variation among different aliquots was observed.Comparison of the data obtained from loess sections from different regions, including Xifeng, Luochuan, Jingyuan and Shimao, show significant differences in the magnitudes of OSL sensitivity but a similar pattern between glacial and interglacial periods. The results of this study suggest that, except for the wildfire model proposed to interpret the high OSL sensitivity in paleosol (Zhang, 2018), the shift of wind pattern of westerly wind (i.e., transporting dim source from North Tibetan Plateau and northwesterly wind (i.e., transporting bright source from Alxa Arid Lands and the subsequent mixture from the different sources may partially contribute to the different OSL sensitivities observed for Xifeng and Luochuan. In contrast, the OSL sensitivity of Shimao samples from L1 was affected by the input from the Mu Us Desert, and those of Jingyuan may affected by the contribution from the Yellow River.
英文关键词	Quartz Optically stimulated luminescence sensitivity (OSL Sensitivity) Chinese loess plateau Loess-paleosol Provenance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000818446400003
WOS关键词	NORTHERN CHINA ; MONSOON VARIATIONS ; LUOCHUAN SECTION ; SOURCE AREA ; PROVENANCE ; SEDIMENTS ; GRAINS ; OSL ; DEPOSITS ; DUST
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394091
推荐引用方式 GB/T 7714	Li, Jiao,Yang, Li-Rong. Variations in the sensitivity of the optically stimulated luminescence from quartz in the Xifeng section: A spatiotemporal comparison across the Chinese Loess Plateau since the last interglaciation[J],2022,72.
APA	Li, Jiao,&Yang, Li-Rong.(2022).Variations in the sensitivity of the optically stimulated luminescence from quartz in the Xifeng section: A spatiotemporal comparison across the Chinese Loess Plateau since the last interglaciation.QUATERNARY GEOCHRONOLOGY,72.
MLA	Li, Jiao,et al."Variations in the sensitivity of the optically stimulated luminescence from quartz in the Xifeng section: A spatiotemporal comparison across the Chinese Loess Plateau since the last interglaciation".QUATERNARY GEOCHRONOLOGY 72(2022).