Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 1871-1014 |
EISSN | 1878-0350 |
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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