Arid
DOI10.1016/j.quageo.2015.02.011
Potential of establishing a ’global standardised growth curve’ (gSGC) for optical dating of quartz from sediments
Li, Bo1; Roberts, Richard G.1; Jacobs, Zenobia1; Li, Sheng-Hua2
通讯作者Li, Bo
来源期刊QUATERNARY GEOCHRONOLOGY
ISSN1871-1014
EISSN1878-0350
出版年2015
卷号27页码:94-104
英文摘要

We report investigations of the optically stimulated luminescence (OSL) signals of sedimentary quartz from different regions of Asia, Africa, Europe and North America using a single-aliquot regenerative-dose (SAR) procedure. We show that variations in the shape of dose response curves (DRCs), or growth curves, of the test dose sensitivity-corrected OSL signals among single aliquots composed of multiple grains can be greatly reduced by normalising the DRCs using one of the regenerative dose OSL signals. We refer to this regenerative-dose normalisation procedure as ’re-normalisation’. We find a common re-normalised DRC extends to doses of similar to 250 Gy for samples that differ significantly in terms of geological provenance, sedimentary context and depositional age. This feature permits the development of a ’global standardised growth curve’ (gSGC) for OSL signals from single aliquots of quartz. The equivalent dose (D-e) of an aliquot can be estimated from the natural signal, one regenerative dose signal and their corresponding test dose signals. For the variety of samples investigated, we find that D-e estimates obtained from the gSGC are consistent with those obtained using full SAR procedures for doses of up to similar to 250 Gy. Use of the gSGC for single aliquots would greatly reduce the time required to estimate the D-e values of older samples and for a large number of aliquots. (C) 2015 Elsevier B.V. All rights reserved.


英文关键词Quartz grains Optically stimulated luminescence Standardised growth curve Dose response curve
类型Article
语种英语
国家Australia ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000353080300008
WOS关键词DOSE-RESPONSE CURVES ; JINMIUM ROCK SHELTER ; US DESERT MARGIN ; STIMULATED LUMINESCENCE ; SENSITIVITY CHANGES ; NORTHERN AUSTRALIA ; MULTIPLE GRAINS ; CHINESE LOESS ; BLOMBOS CAVE ; SOUTH-AFRICA
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/2XILL650/189965
作者单位1.Univ Wollongong, Sch Earth & Environm Sci, Ctr Archaeol Sci, Wollongong, NSW 2522, Australia;
2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714
Li, Bo,Roberts, Richard G.,Jacobs, Zenobia,等. Potential of establishing a ’global standardised growth curve’ (gSGC) for optical dating of quartz from sediments[J],2015,27:94-104.
APA Li, Bo,Roberts, Richard G.,Jacobs, Zenobia,&Li, Sheng-Hua.(2015).Potential of establishing a ’global standardised growth curve’ (gSGC) for optical dating of quartz from sediments.QUATERNARY GEOCHRONOLOGY,27,94-104.
MLA Li, Bo,et al."Potential of establishing a ’global standardised growth curve’ (gSGC) for optical dating of quartz from sediments".QUATERNARY GEOCHRONOLOGY 27(2015):94-104.
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