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DOI	10.1016/j.palaeo.2020.109881
	Quartz optically stimulated luminescence dating of loess in Tajikistan and its paleoclimatic implications for arid Central Asia since the Lateglacial
	Yang S.; Li D.; Liu N.; Zan J.; Liu W.; Kang J.; Murodov A.; Fang X.
发表日期	2020
ISSN	0031-0182
卷号	556
英文摘要	Thick and widespread loess deposits in southern Tajikistan provide insight into the regional climatic changes in arid Central Asia (ACA) during the Quaternary. However, because of the lack of robust chronological constraints, the environmental implications of these deposits are not yet fully understood. Here, we report a detailed medium-grained quartz optically stimulated luminescence (OSL) dating analysis on a loess sequence deposited since the Lateglacial in southern Tajikistan. The single-aliquot regeneration (SAR) and standardized growth curve (SGC) methods were used for equivalent dose determination. Quartz OSL measurements showed that both the SAR and SGC methods can be used for equivalent dose determination for Tajik loess. On the basis of the obtained OSL ages, we reconstructed the dust accumulation rates and mass accumulation rates. Our results show that the dust flux continued to decline whereas the precipitation increased stepwise after the end of the Last Glacial Maximum. Changes in the dust flux and precipitation in ACA were sensitive to the gradual warming since the Lateglacial. © 2020 Elsevier B.V.
英文关键词	Aeolian; Dust flux; Last Glacial Maximum; Magnetic susceptibility; Mass accumulation rates; Medium-grained quartz
语种	英语
scopus关键词	accumulation rate; climate variation; growth curve; Last Glacial Maximum; late glacial; loess; luminescence dating; paleoclimate; quartz; Central Asia; Tajikistan
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150395
作者单位	Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences and Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; CAS Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China
推荐引用方式 GB/T 7714	Yang S.,Li D.,Liu N.,et al. Quartz optically stimulated luminescence dating of loess in Tajikistan and its paleoclimatic implications for arid Central Asia since the Lateglacial[J],2020,556.
APA	Yang S..,Li D..,Liu N..,Zan J..,Liu W..,...&Fang X..(2020).Quartz optically stimulated luminescence dating of loess in Tajikistan and its paleoclimatic implications for arid Central Asia since the Lateglacial.Palaeogeography, Palaeoclimatology, Palaeoecology,556.
MLA	Yang S.,et al."Quartz optically stimulated luminescence dating of loess in Tajikistan and its paleoclimatic implications for arid Central Asia since the Lateglacial".Palaeogeography, Palaeoclimatology, Palaeoecology 556(2020).