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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, Shengli; Li, Dongxue; Liu, Nannan; Zan, Jinbo; Liu, Weiming; Kang, Jian; Murodov, Azamdzhon; Fang, Xiaomin
通讯作者	Yang, SL (通讯作者)
发表日期	2020
ISSN	0031-0182
EISSN	1872-616X
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.
关键词	CHEMICAL-WEATHERING HISTORY MASS ACCUMULATION RATE CHINESE LOESS GROWTH-CURVE ILI BASIN SOUTHERN TAJIKISTAN QUATERNARY LOESS DUST DEPOSITION GRAIN-SIZE COSMIC-RAY
英文关键词	Medium-grained quartz; Mass accumulation rates; Magnetic susceptibility; Last Glacial Maximum; Dust flux; Aeolian
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000561370700014
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259871
推荐引用方式 GB/T 7714	Yang, Shengli,Li, Dongxue,Liu, Nannan,et al. Quartz optically stimulated luminescence dating of loess in Tajikistan and its paleoclimatic implications for arid Central Asia since the Lateglacial[J]. 中国科学院青藏高原研究所,2020,556.
APA	Yang, Shengli.,Li, Dongxue.,Liu, Nannan.,Zan, Jinbo.,Liu, Weiming.,...&Fang, Xiaomin.(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, Shengli,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).