A new approach towards anomalous fading correction for feldspar IRSL dating — tests on samples in field saturation

Kars, R.H.; Wallinga, Jakob; Cohen, K.M.

doi:10.1016/j.radmeas.2008.01.021

Cited by 194 publications

(209 citation statements)

References 15 publications

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“…It has been shown that the natural signal has a different anomalous fading rate from the laboratory irradiated samples Kars et al, 2008). In an extreme case, for a fieldsaturated sample, the signals generated by laboratory beta irradiation above the natural dose are dominated by the fading (geologically unstable) signals, while the natural signal are dominated by the non-fading (stable) signal .…”

Section: Effects Of Ir Bleaching On Tl Signal From N+ β Samplementioning

confidence: 99%

Thermal stability of infrared stimulated luminescence of sedimentary K-feldspar

2011

Radiation Measurements

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The thermal stability of the infrared stimulated luminescence (IRSL) signal measured at 50 °C as a function of IR stimulation time was investigated using KF grains extracted from sediments from central China. A dependence of thermal stability of IRSL signal on IR stimulation time and stimulation temperature were observed in pulse annealing studies. Relatively lower thermal stability is given by the initial part of the IRSL measured at 50 °C, than the later part of IRSL curve. Based on these observations, the thermal stability of the post-IR IRSL signal stimulated at elevated temperatures (100-200 °C) was also investigated. It was found that at least two groups of traps (shallow and deep) are associated with the IRSL and post-IR IRSL signals. The IRSL signal obtained at 50 °C is mainly from the shallow traps while the post-IR IRSL obtained at elevated temperatures is mainly from the deep traps. The kinetics parameters obtained using pulse annealing test indicate that the shallow IRSL traps are probably associated with the ∼300-350 °C TL peak and the deep traps are probably associated with the ∼400 °C TL peak. The shallow traps (∼350 °C TL peak) are associated with those easy-to-fade traps and the deep traps (∼400 °C TL peak) are associated with hard-to-fade traps.

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Section: Effects Of Ir Bleaching On Tl Signal From N+ β Samplementioning

confidence: 99%

Thermal stability of infrared stimulated luminescence of sedimentary K-feldspar

2011

Radiation Measurements

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“…The aim was to compare fading data obtained in both laboratories using similar samples in order to evaluate whether the fading recorded was similar according to the stimulation source and/or the mineralogical fraction used. The samples were bleached (100 s at 280 C), given a 10 Gy dose and measured after storage periods ranging from 200 s to 73 h (Kars et al, 2008). The IRSL was recorded at 75 C, for 100 s, following a preheat at 220 C (10 s hold).…”

Section: Fading Testsmentioning

confidence: 99%

An intercomparison study of luminescence dating protocols and techniques applied to medieval brick samples from Normandy (France)

Blain

Bailiff

Guibert

et al. 2010

Quaternary Geochronology

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a b s t r a c tA luminescence dating study has been applied to inform the history and archaeology of two early medieval buildings in north western France. Five bricks were sampled from the medieval churches (10th-11th centuries A.D.) of Rugles and Condé -sur-Risle in Normandy. The samples were divided and tested in the luminescence laboratories of the University of Durham (UK) and of Iramat-CRP2A, University of Bordeaux 3 (France). The fine grain and quartz inclusion techniques were applied, and tests included an examination of the anomalous fading of the luminescence signal from fine grain samples and coarse grains of feldspar. With one exception, the dates produced using the fine grain technique, although corrected for fading, were significantly younger than those produced with quartz inclusions. Although most of the corrected fine grain dates were consistent with the medieval construction of the churches, the brick fabric is of Roman type by archaeological assessment, and this is supported by the quartz coarse grain dates. We conclude that the bricks sampled are re-used, likely to be of Roman origin, and that the reliability of measurements with feldspars in brick fabrics requires wider investigation.

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“…Additionally, Reimann et al (2015) showed that different pIRIR stimulation temperatures have different rates of bleaching under daylight exposure. In bleaching experiments conducted by these previous studies, the pIRIR signal intensity did not reach an unbleachable residual (Huntley, 2006) Kars et al (2008) and Kars and Wallinga (2009 level. However, Yi et al (2016) recently showed that the residual dose of the pIRIR 50/290 signal reached a lower limit after artificial sunlight (SOL2) bleaching for 300 h, and its residual dose was 6.2 ± 0.7 Gy.…”

Section: Residual Dose Estimationmentioning

confidence: 59%

“…4b). The data were also used to calculate the dimensionless recombination center density ρ' (Huntley, 2006), summarized in Table 3 for the fading correction following Kars et al (2008).…”

Section: Anomalous Fading Measurementmentioning

confidence: 99%

Post-IR IRSL dating of K-feldspar from last interglacial marine terrace deposits on the Kamikita coastal plain, northeastern Japan

2017

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Abstract:To establish a suitable luminescence dating protocol for marine terrace deposits in Japan, we tested the applicability of K-feldspar post-infrared (IR) infrared stimulated luminescence (IRSL) (pIRIR) dating using a marine isotope stage (MIS) 5e terrace deposit from the Kamikita coastal plain (NE Japan), where independent age control from a tephra is available. One of the most commonly used pIRIR signals, measured at 290°C with the first IR stimulation temperature at 50°C (pIRIR 50/290 ), faded with a mean g 2days value of 1.94 ± 0.19%/decade. In contrast, the pIRIR signal with a higher first IR stimulation temperature of 200°C (pIRIR 200/290 ) had a much lower fading rate (g 2days = 0.16 ± 0.49%/decade). The average fading-uncorrected and -corrected pIRIR 200/290 ages of MIS 5e subtidal sediments obtained from two sampling sites were 126 ± 3 ka and 132 ± 2 ka, which is in good agreement with the independent age control. We conclude that is it is now possible to use pIRIR protocol to estimate the ages of not only marine terraces formed during MIS 5 substages (5a, 5c) but also of older marine terraces, for which age evidence is limited.

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A new approach towards anomalous fading correction for feldspar IRSL dating — tests on samples in field saturation

Cited by 194 publications

References 15 publications

Thermal stability of infrared stimulated luminescence of sedimentary K-feldspar

Thermal stability of infrared stimulated luminescence of sedimentary K-feldspar

An intercomparison study of luminescence dating protocols and techniques applied to medieval brick samples from Normandy (France)

Post-IR IRSL dating of K-feldspar from last interglacial marine terrace deposits on the Kamikita coastal plain, northeastern Japan

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