Time-resolved luminescence from feldspars: New insight into fading

Tsukamoto, Sumiko; Denby, Phil M.; Murray, Andrew; Bøtter‐Jensen, L.

doi:10.1016/j.radmeas.2006.05.013

Cited by 68 publications

(40 citation statements)

References 14 publications

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“…They suggested that different parts of the pulsed OSL signal of feldspar have different fading rates, and anomalous fading might be avoided by selecting those parts of the signal that do not fade. A similar conclusion was reached by Tsukamoto et al (2006) and Jain and Ankjaergaard (2011). In a later study, Li et al (2008b) proposed an isochron IRSL dating method, which uses the IRSL signal from K-feldspar grains of different grain sizes.…”

Section: Anomalous Fadingsupporting

confidence: 61%

“…Given the great potential for extending the age range of luminescence dating using feldspar, a number of attempts have been made over the last two decades or so to avoid anomalous fading (e.g., Sanderson and Clark, 1994;Lamothe and Auclair, 1999;Huntley and Lamothe, 2001;Zhao and Li, 2002;Lamothe et al, 2003;Tsukamoto et al, 2006;Li et al, 2008b). One such attempt was the storage of mineral grains such as zircon at elevated temperatures before measurement of the TL signal, which Templer (1985) found removed anomalous fading.…”

Section: Anomalous Fadingmentioning

confidence: 99%

See 1 more Smart Citation

Review and assessment of the potential of post-IR IRSL dating methods to circumvent the problem of anomalous fading in feldspar luminescence

et al. 2014

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Quartz has been the main mineral used for optically stimulated luminescence (OSL) dating of sediments over the last decade. The quartz OSL signal, however, has been shown to saturate at relatively low doses of ~200-400 Gy, making it difficult to be used for dating beyond about 200 thousand years (ka), unless the environmental dose rate is low. The infrared stimulated luminescence (IRSL) from feldspars has been shown to continue to grow to higher dose levels than quartz OSL. The application of IRSL dating of feldspars, however, has long been hampered by the anomalous fading effect. Recent progress in understanding anomalous fading of the infrared stimulated luminescence (IRSL) signals in potassium-feldspar has led to the development of post-IR IRSL (pIRIR) protocols and also a multiple elevated temperature (MET) stimulation (MET-pIRIR) protocol. These procedures have raised the prospect of isolating a non-fading IRSL component for dating Quaternary deposits containing feldspars. In this study, we review the recent progress made on (1) overcoming anomalous fading of feldspar, and (2) the development of pIRIR dating techniques for feldspar. The potential and problems associated with these methods are discussed.

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Section: Anomalous Fadingsupporting

confidence: 61%

Section: Anomalous Fadingmentioning

confidence: 99%

Review and assessment of the potential of post-IR IRSL dating methods to circumvent the problem of anomalous fading in feldspar luminescence

et al. 2014

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“…Given the great potential of extending the age range of luminescence dating using feldspar, attempts have been made to correct for or to avoid the anomalous fading effect (Sanderson and Clark, 1994;Lamothe and Auclair, 1999;Huntley and Lamothe, 2001;Zhao and Li, 2002;Lamothe et al, 2003;Tsukamoto et al, 2006;Li et al, 2007Li et al, , 2008. Huntley and Lamothe (2001) proposed a method to correct for anomalous fading, based on the measurement of the fading rate (g value) in terms of percentage loss per decade (Aitken, 1985).…”

Section: Introductionmentioning

confidence: 99%

Extending the age limit of luminescence dating using the dose-dependent sensitivity of MET-pIRIR signals from K-feldspar

Jacobs

Roberts

et al. 2013

Quaternary Geochronology

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S. (2013). Extending the age limit of luminescence dating using the dose-dependent sensitivity of MET-pIRIR signals from K-feldspar. Quaternary Geochronology, 17 55-67.Extending the age limit of luminescence dating using the dose-dependent sensitivity of MET-pIRIR signals from K-feldspar AbstractWe investigated the sensitivity change of multiple-elevated-temperature (MET) stimulated post-infrared infrared-stimulated luminescence (MET-pIRIR) signals as a response to irradiation, sunlight bleaching and heating using samples from the Mu Us Desert, central China. A strong dose dependence of MET-pIRIR signal sensitivity was observed. The intensity of the test-dose signals (Tx) increase with the pre-dose received. Furthermore, the signal sensitivity can be reset by sunlight bleaching or heating. This suggests that both the electron traps and hole centres in K-feldspar can be bleached by sunlight, and can, therefore, be used for dating. Using the test-dose signal as a monitor for sensitivity change, it was found that the sensitivity (or hole centres) saturate at a higher dose (D0 = ∼750 Gy) than the sensitivity-corrected signals (or electron traps) (D0 = ∼400 Gy). We propose a multi-aliquot regenerative-dose (MAR) MET-pIRIR dating protocol, which utilises the high saturation dose of hole centres. This protocol was tested using aeolian sediments from north China with ages ranging from 0 to 470 ka. It was found that, compared to the dose limit of ∼800-1000 Gy using the normal MET-pIRIR or pIRIR procedure, the new method can measure a natural dose of up to ∼1500 Gy and produce ages consistent with the expected ages for the samples investigated. increase with the pre-dose received. Furthermore, the signal sensitivity can be reset by sunlight bleaching or heating. This suggests that both the electron traps and hole centres in K-feldspar can be bleached by sunlight, and can, therefore, be used for dating. Using the test-dose signal as a monitor for sensitivity change, it was found that the sensitivity (or hole centres) saturate at a higher dose (D 0 = ~750 Gy) than the sensitivity-corrected signals (or electron traps) (D 0 = ~400 Gy). We propose a multi-aliquot regenerative-dose (MAR) MET-pIRIR dating protocol, which utilises the high saturation dose of hole centres. This protocol was tested using aeolian sediments from north China with ages ranging from 0 to 470 ka. It was found that, compared to the dose limit of ~800-1000 Gy using the normal MET-pIRIR or pIRIR procedure, the new method can measure a natural dose of up to ~1500 Gy and produce ages consistent with the expected ages for the samples investigated.

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“…However, we followed the promising studies of Buylaert et al (2011) and Roskosch et al (2015), who successfully generated fading corrected ages of Middle Pleistocene (Elsterian, Saalian, Eemian) sediments. Consequently, we believe that the effect of age underestimation based on the occurrence of anomalous fading was minimized as far as possible by both using a more stable luminescence signal (Tsukamoto et al, 2006) and applying a suitable fading correction model (Huntley and Lamothe, 2001).…”

Section: Discussion Luminescence Results: Reliable and Robust?mentioning

confidence: 99%

“…A preheat at 250°C for 60 s was used, followed by a pulsed IR stimulation at 50°C for 400 s with 50 μs on-time and 200 μs off-time. Only off-time signal was recorded because it was found to give a stable luminescence signal (Tsukamoto et al, 2006). The pulsed IRSL signal at 50°C (IR 50 ) was chosen over the elevated temperature post-IR IRSL signal (pIRIR; Thomsen et al, 2008b) because it appears to be more sensitive to light.…”

Section: Equivalent Dose and Dose Rate Determinationmentioning

confidence: 99%

Luminescence Dating of Fluvial Deposits from the Weser Valley, Germany

2015

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Abstract:Luminescence dating was applied on coarse-grained monomineralic potassium-rich feldspar and polymineralic fine-grained minerals of five samples derived from fluvial deposits of the River Weser in northwestern Germany. We used a pulsed infrared stimulated luminescence (IRSL) single aliquot regenerative (SAR) dose protocol with an IR stimulation at 50°C for 400 s (50 µs on-time and 200 µs off-time). In order to obtain a stable luminescence signal, only off-time IRSL signal was recorded. Performance tests gave solid results. Anomalous fading was intended to be reduced by using the pulsed IRSL signal measured at 50°C (IR 50 ), but fading correction was in most cases necessary due to moderate fading rates. Fading uncorrected and corrected pulsed IR 50 ages revealed two major fluvial aggradation phases during the Late Pleistocene, namely during marine isotope stage (MIS) 5d (100 ± 5 ka) and from late MIS 5b to MIS 4 (77 ± 6 ka to 68 ± 5 ka). The obtained luminescence ages are consistent with previous 230 Th/U dating results from underlying interglacial deposits of the same pit, which are correlated with MIS 7c to early MIS 6.

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Time-resolved luminescence from feldspars: New insight into fading

Cited by 68 publications

References 14 publications

Review and assessment of the potential of post-IR IRSL dating methods to circumvent the problem of anomalous fading in feldspar luminescence

Review and assessment of the potential of post-IR IRSL dating methods to circumvent the problem of anomalous fading in feldspar luminescence

Extending the age limit of luminescence dating using the dose-dependent sensitivity of MET-pIRIR signals from K-feldspar

Luminescence Dating of Fluvial Deposits from the Weser Valley, Germany

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