Vertical variations of luminescence sensitivity of quartz grains from loess/paleosol of Luochuan section in the central Chinese Loess Plateau since the last interglacial

doi:10.1016/j.quageo.2014.04.004

CORC > 中国地质调查局 > 中国地质调查局

	Vertical variations of luminescence sensitivity of quartz grains from loess/paleosol of Luochuan section in the central Chinese Loess Plateau since the last interglacial
	Lu, Tongyan 5; Sun, Jimin 1; Li, Sheng-Hua ; Gong, Zhijun 1; Xue, Lei 3
刊名	QUATERNARY GEOCHRONOLOGY
	2014
卷号	22 页码:107-115
关键词	Loess-paleosol sequence Luminescence sensitivity Quartz Provenance
ISSN号	1871-1014
DOI	10.1016/j.quageo.2014.04.004
英文摘要	The provenance of loess in Chinese Loess Plateau, including origin, transport pathways and source areas, has long been one of the most important questions. In this study, the vertical variations of the luminescence sensitivity of quartz grains from the central Chinese Loess Plateau were investigated by using optically stimulated luminescence (OSL) techniques. Our results indicate that the luminescence sensitivity of quartz grains of paleosols can be much higher than that of loess beds. In addition, the quartz grains from the loess-paleosol sequence exhibit a temporal trend in the strength of luminescence sensitivity, characterized by higher values in soils and lower values in loess beds. The OSL sensitivity of quartz grains of the loess-paleosol sequence also shows very similar trend to the magnetic susceptibility and particle size fluctuations, implying that the luminescence sensitivity might be climatic dependent. The possible factors affecting the variations of luminescence sensitivity were discussed including particle size, natural radioactivity, and the provenance of eolian deposits. We suggest that the temporal variations of luminescence sensitivity can be attributed to the retreat-advance of deserts, the different contributions of glacial origin quartz particles associated with mountain processes, and wind patterns during glacial/interglacial cycles. Therefore, the secular variations of luminescence sensitivity of quartz grains are ultimately influenced by past climatic change through its controlling on sediment provenance changes. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	第四纪地质
WOS关键词	PAST 8 MA ; NORTHERN CHINA ; EOLIAN DEPOSITS ; MAGNETIC-SUSCEPTIBILITY ; PALEOCLIMATIC IMPLICATIONS ; GLACIOFLUVIAL SEDIMENTS ; COMPUTER-SIMULATIONS ; MONSOON EVOLUTION ; PROVENANCE CHANGE ; THERMAL TRANSFER
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000337851600012
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40607]
专题	中国地质调查局
作者单位	1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 4.Earth Quake Adm Fujian Prov, Xiamen 361021, Peoples R China 5.中国地质科学院地质力学研究所
推荐引用方式 GB/T 7714	Lu, Tongyan,Sun, Jimin,Li, Sheng-Hua,et al. Vertical variations of luminescence sensitivity of quartz grains from loess/paleosol of Luochuan section in the central Chinese Loess Plateau since the last interglacial[J]. QUATERNARY GEOCHRONOLOGY,2014,22:107-115.
APA	Lu, Tongyan,Sun, Jimin,Li, Sheng-Hua,Gong, Zhijun,&Xue, Lei.(2014).Vertical variations of luminescence sensitivity of quartz grains from loess/paleosol of Luochuan section in the central Chinese Loess Plateau since the last interglacial.QUATERNARY GEOCHRONOLOGY,22,107-115.
MLA	Lu, Tongyan,et al."Vertical variations of luminescence sensitivity of quartz grains from loess/paleosol of Luochuan section in the central Chinese Loess Plateau since the last interglacial".QUATERNARY GEOCHRONOLOGY 22(2014):107-115.