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Journal articles on the topic 'Feldspar Luminescence spectroscopy Luminescence dating'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Li, Guo-Qiang, Hui Zhao, and Fa-Hu Chen. "Comparison of three K-feldspar luminescence dating methods for Holocene samples." Geochronometria 38, no. 1 (March 1, 2011): 14–22. http://dx.doi.org/10.2478/s13386-011-0011-z.

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Abstract The luminescence dating of the K-feldspar fraction is an alternative way for samples that cannot yield reasonable equivalent dose (De) from quartz fraction with very weak luminescence signal. For testing the reliability of the infrared stimulated luminescence (IRSL) dating of K-feldspar, luminescence dating was applied to quartz and K-feldspar fractions respectively for several Holocene samples in this study. K-feldspar apparent ages using routine single aliquot regenerative-dose (SAR) protocol, K-feldspar ages using g value correction method and ages from isochron dating method were compared with quartz ages. It is found that the g value correction method cannot give reliable ages due to the large errors induced during measurements. The isochron dating method is effective to the sample with problematically external dose rate. However, isochron dating may introduce a relatively greater error during grain sizes — De curve fitting, therefore this method could obtain low-resolution ages for Holocene samples. Even K-feldspar apparent age from routine SAR protocol is relatively younger by about 10% than the quartz age, it still could establish reasonable chronological framework for Holocene samples.

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2

Bringuier, Eric. "Disorder-enhanced luminescence kinetics in volcanic feldspars." EPJ Web of Conferences 244 (2020): 01012. http://dx.doi.org/10.1051/epjconf/202024401012.

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A granitic feldspar is well-ordered and has a stable thermoluminescence signal enabling its dating with high reliability. In contrast, a volcanic feldspar (sanidine) exhibits a slight cristallographic disorder and an anomalously fast fading of the thermoluminescence signal (Visocekas et al. 2014). It is shown here how disorder changes the decay of the signal and enhances the kinetics, while the increase in the microscopic complexity plays no role.

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3

Sohbati, Reza, Andrew Murray, Mayank Jain, Kristina Thomsen, Seong-Chan Hong, Keewook Yi, and Jeong-Heon Choi. "Na-rich feldspar as a luminescence dosimeter in infrared stimulated luminescence (IRSL) dating." Radiation Measurements 51-52 (April 2013): 67–82. http://dx.doi.org/10.1016/j.radmeas.2012.12.011.

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4

Mueller, Daniela, Frank Preusser, Marius W. Buechi, Lukas Gegg, and Gaudenz Deplazes. "Luminescence properties and dating of glacial to periglacial sediments from northern Switzerland." Geochronology 2, no. 2 (November 4, 2020): 305–23. http://dx.doi.org/10.5194/gchron-2-305-2020.

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Abstract. Luminescence dating has become a pillar of the understanding of Pleistocene glacial advances in the northern foreland of the Swiss Alps. However, both quartz and feldspar from the region are equally challenging as dosimeters with anomalous fading and partial bleaching being some of the obstacles to overcome for the establishment of decisive chronologies. In this study, luminescence properties of coarse- and fine-grained quartz, feldspar, and polymineral fractions of eight samples from a palaeovalley, Rinikerfeld in northern Switzerland, are systematically assessed. Standard performance tests are conducted on all four fractions. Deconvolution of luminescence signals of the quartz fractions is implemented and shows the dominance of stable fast components. Reader-specific low preheat temperatures are investigated on the infrared stimulated luminescence (IRSL) signal of feldspar. Thermal stability of this signal is found for low preheats, and thermal quenching could be excluded for higher preheats. However, anomalous fading is observed in the feldspar and polymineral IRSL signals and two correction approaches are applied. For one approach, fading corrected coarse-grained feldspar ages are consistent with those derived from quartz. In general, coarse-grained quartz and feldspar, as well as the fine-grained polymineral fraction of one sample, are in chrono-stratigraphic agreement and present negligible evidence for partial bleaching. However, ages derived from fine-grained quartz are found to underestimate those of the coarse-grained quartz fractions. Hence, the impact of alpha efficiency and water content on the dose rate and thus the ages are assessed. A finite explanation for the observed discrepancies remains lacking, but this systematic investigation of different luminescence signals allows for the establishment of a chronology for the palaeovalley fill dating back to at least Marine Isotope Stage 6 (MIS 6).

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Li, Bo, Zenobia Jacobs, Richard Roberts, and Sheng-Hua Li. "Review and assessment of the potential of post-IR IRSL dating methods to circumvent the problem of anomalous fading in feldspar luminescence." Geochronometria 41, no. 3 (September 1, 2014): 178–201. http://dx.doi.org/10.2478/s13386-013-0160-3.

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AbstractQuartz 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 thou-sand 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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6

Faershtein, Galina, Naomi Porat, and Ari Matmon. "Extended-range luminescence dating of quartz and alkali feldspar from aeolian sediments in the eastern Mediterranean." Geochronology 2, no. 1 (May 7, 2020): 101–18. http://dx.doi.org/10.5194/gchron-2-101-2020.

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Abstract. Optically stimulated luminescence (OSL) of quartz is an established technique for dating late Pleistocene to late Holocene sediments. Unfortunately, this method is often limited to up to 100 ka (thousands of years). Recent developments in new extended-range luminescence techniques show great potential for dating older sediments of middle and even early Pleistocene age. These methods include thermally transferred OSL (TT-OSL) and violet stimulated luminescence (VSL) for quartz and post-infrared infrared stimulated luminescence (pIRIR) for feldspar. Here we investigate the luminescence behaviour of the TT-OSL, VSL, and pIRIR signals of quartz and feldspar minerals of aeolian sediments of Nilotic origin from the eastern Mediterranean. We sampled a 15 m thick sequence (Kerem Shalom) comprising sandy calcic palaeosols, which is part of a sand sheet that covers an extensive region in south-western Israel. Dose recovery and bleaching experiments under natural conditions indicated that the pIRIR250 signal is the most suitable for dating the Nilotic feldspar. Luminescence intensity profiles revealed natural saturation of the three signals at the same depth of ∼6 m, indicating that ages of samples below that depth are minimum ages. Using TT-OSL and pIRIR250, a minimum age of 715 ka for the base of the section was obtained, suggesting aeolian sand accumulation along the eastern Mediterranean coastal plain already since the early Pleistocene. Our results indicate that both TT-OSL and pIRIR250 can accurately date aeolian sediments of Nilotic origin up to 200 ka and that minimum ages can be provided for older samples up to the early Pleistocene.

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7

Gong, Gelian, Bin Xia, and Shunsheng Liu. "Study on feldspar thermoluminescence spectra and its luminescence dating implication." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 251, no. 1 (September 2006): 143–47. http://dx.doi.org/10.1016/j.nimb.2006.05.022.

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8

Zhang, Junjie, and Sheng-Hua Li. "Review of the Post-IR IRSL Dating Protocols of K-Feldspar." Methods and Protocols 3, no. 1 (January 14, 2020): 7. http://dx.doi.org/10.3390/mps3010007.

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Compared to quartz, the infrared stimulated luminescence (IRSL) of K-feldspar saturates at higher dose, which has great potential for extending the dating limit. However, dating applications with K-feldspar has been hampered due to anomalous fading of the IRSL signal. The post-IR IRSL (pIRIR) signal of K-feldspar stimulated at a higher temperature after a prior low-temperature IR stimulation has significantly lower fading rate. Different dating protocols have been proposed with the pIRIR signals and successful dating applications have been made. In this study, we review the development of various pIRIR dating protocols, and compare their performance in estimating the equivalent dose (De). Standard growth curves (SGCs) of the pIRIR signals of K-feldspar are introduced. Single-grain K-feldspar pIRIR dating is presented and the existing problems are discussed.

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9

Cordier, S., M. Frechen, and S. Tsukamoto. "Methodological Aspects on Luminescence Dating of Fluvial Sands from the Moselle Basin, Luxembourg." Geochronometria 35, no. -1 (January 1, 2010): 67–74. http://dx.doi.org/10.2478/v10003-010-0006-4.

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Methodological Aspects on Luminescence Dating of Fluvial Sands from the Moselle Basin, LuxembourgOptically stimulated luminescence (OSL) dating of quartz and infrared-stimulated luminescence (IRSL) dating of feldspar were applied to fluvial sands from the lower terrace (M1) of the Moselle valley in Luxembourg (western Europe). The dating results indicated that the aggradation period for the sediments from below the M1 alluvial terrace can be correlated to the Weichselian upper Pleniglacial (MIS 2), which is in good agreement with the general chronostratigraphy of the Moselle terrace staircase. The ages were obtained from small aliquots of quartz and feldspars, using the single aliquot regenerative (SAR) protocol. The equivalent dose determination included a series of tests and the selection of the Minimum Age Model as the most appropriate statistical model. This made it possible to provide a reliable methodological background for further luminescence dating of fluvial sediments from the Moselle basin.

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10

Ollerhead, Jeff, D. J. Huntley, and Glenn W. Berger. "Luminescence dating of sediments from Buctouche Spit, New Brunswick." Canadian Journal of Earth Sciences 31, no. 3 (March 1, 1994): 523–31. http://dx.doi.org/10.1139/e94-046.

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In this paper we describe our efforts to determine the formation chronology of a sequence of dunes on Buctouche Spit, a Holocene deposit on the northeast coast of New Brunswick. Optical dating, using infrared stimulation of K-feldspar grains, yielded ages ranging from 5 ± 30 a for an embryo dune to 765 ± 45 a for the oldest dune. Thermoluminescence ages, although less precise, support the recent formation of the dunes. The ages exhibit the expected sedation from youngest to oldest and are consistent with historical evidence coupled with an assumed constant sediment aggradation rate. The age resolution obtained was very good and we conclude that the optical dating method used here shows great promise.

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11

Madsen, Anni, Jan-Pieter Buylaert, and Andrew Murray. "Luminescence dating of young coastal deposits from New Zealand using feldspar." Geochronometria 38, no. 4 (December 1, 2011): 379–90. http://dx.doi.org/10.2478/s13386-011-0042-5.

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Abstract A new measurement protocol has been tested on K-feldspars from Whanganui Inlet and Parengarenga Harbour, New Zealand. A Single Aliquot Regenerative (SAR) dose protocol, using two successive infrared (IR) stimulations (post-IR IR SAR protocol) is setup for these young (<1000 years) coastal sediments. Significant anomalous fading (g2days=7 %/decade) is observed using the conventional IR signal measured at 50°C. In contrast, the fading rate of the IR signal measured at elevated temperature (150°C) after the IR stimulation at 50°C (a post-IR IR signal) is not significant (g2days≤ 1 %/decade). Surprisingly low residual infrared stimulated luminescence (IRSL) signals were observed for a surface sample, suggesting that accurate ages as young as ∼50 years can be obtained for these recent deposits. IRSL ages ranging between 48±6 years and 1050±50 years are obtained from six samples, indicating that sediment accumulation has occurred at the two sites during the last millennia, despite a falling trend in relative sea-level in Whanganui Inlet and a stable relative sea-level at Parengarenga Harbour.

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12

Alappat, L., S. Tsukamoto, P. Singh, D. Srikanth, R. Ramesh, and M. Frechen. "Chronology of Cauvery Delta Sediments from Shallow Subsurface Cores Using Elevated-Temperature Post-IR IRSL Dating of Feldspar." Geochronometria 37, no. -1 (January 1, 2010): 37–47. http://dx.doi.org/10.2478/v10003-010-0025-1.

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Chronology of Cauvery Delta Sediments from Shallow Subsurface Cores Using Elevated-Temperature Post-IR IRSL Dating of Feldspar We present the results of luminescence dating of sediments from two cores from the Cauvery Delta in south-east India. Since all natural quartz OSL signals except one sample were in saturation, the elevated temperature post-IR IRSL protocol for K-feldspar was applied to establish a chronology. Internal dose rates of K-feldspar grains were calculated from the measured internal content of potassium, uranium, thorium and rubidium in the bulk of K-feldspar grains using solution ICP-OES and ICP-MS analysis. A substantial scatter in single-aliquot De values was observed which is most probably due to the effect of incomplete bleaching of fluvial sediments before burial. A minimum age model was applied to extract possible depositional ages. The study revealed that except an upper layer of Holocene sediments (< 5m), the majority of the upper ~50m of Cauvery delta sediments were deposited between marine isotope stage MIS-5 and MIS-10 or older. The feldspar luminescence ages also indicate the existence of a period of non deposition or erosion in the upper part of the cores.

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13

Lauer, Tobias, Rainer Bonn, Manfred Frechen, Magret Fuchs, Marcus Trier, and Sumiko Tsukamoto. "Geoarchaeological studies on Roman time harbour sediments in Cologne — comparison of different OSL dating techniques." Geochronometria 38, no. 4 (December 1, 2011): 341–49. http://dx.doi.org/10.2478/s13386-011-0020-y.

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Abstract Due to the construction of a new North-South subway in Cologne, Roman time harbour sediments were exposed and were sampled for luminescence dating. A very good independent age control was given by the precise knowledge of the chronology of Roman activity and by radiocarbon ages of charcoal samples. Hence, different methodological approaches within luminescence dating were applied for Holocene heterogeneously bleached fluvial samples and were compared to the known ages. For one sample, optically stimulated luminescence (OSL) dating was applied to coarse-grained quartz using a single aliquot regenerative-dose (SAR) protocol. After De-measurements, different statistical approaches were tested (i.e. arithmetic mean, median, minimum age model, finite mixture model, leading edge method and the Fuchs and Lang approach). It is demonstrated that the Fuchs and Lang approach along with the leading edge method yielded the best matching OSL ages with respect to the known ages. For the other sample which showed feldspar contamination within the quartz signal, the post-IR blue stimulated luminescence (double SAR protocol) was measured in three different ways to calculate the Devalue: with continuous wave (CW) stimulation with an IR-bleach at 50°C and at 225°C for 100 s prior to the OSL, and pulsed OSL (POSL). It was demonstrated that the IR-stimulation at 225°C has very good potential to remove the feldspar signal contribution as well as pulsed OSL, but the former might deplete parts of the quartz OSL signal.

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14

Lamothe, Michel. "Dating the last 500 000 years of climate history using feldspar luminescence." Quaternary International 279-280 (November 2012): 263. http://dx.doi.org/10.1016/j.quaint.2012.08.654.

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15

Lamothe, Michel, Laurence Forget Brisson, and François Hardy. "Circumvention of anomalous fading in feldspar luminescence dating using Post-Isothermal IRSL." Quaternary Geochronology 57 (April 2020): 101062. http://dx.doi.org/10.1016/j.quageo.2020.101062.

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16

Stokes, Stephen, and Morteza Fattahi. "Red emission luminescence from quartz and feldspar for dating applications: an overview." Radiation Measurements 37, no. 4-5 (August 2003): 383–95. http://dx.doi.org/10.1016/s1350-4487(03)00060-x.

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17

Smedley, R. K., G. A. T. Duller, N. J. G. Pearce, and H. M. Roberts. "Determining the K-content of single-grains of feldspar for luminescence dating." Radiation Measurements 47, no. 9 (September 2012): 790–96. http://dx.doi.org/10.1016/j.radmeas.2012.01.014.

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18

Lauer, T., M. Krbetschek, B. Mauz, and M. Frechen. "Yellow stimulated luminescence from potassium feldspar: Observations on its suitability for dating." Radiation Measurements 47, no. 10 (October 2012): 974–80. http://dx.doi.org/10.1016/j.radmeas.2012.08.002.

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Buylaert, Jan-Pieter, Mayank Jain, Andrew S. Murray, Kristina J. Thomsen, Christine Thiel, and Reza Sohbati. "A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments." Boreas 41, no. 3 (March 1, 2012): 435–51. http://dx.doi.org/10.1111/j.1502-3885.2012.00248.x.

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20

Nelson, Michelle S., Harrison J. Gray, Jack A. Johnson, Tammy M. Rittenour, James K. Feathers, and Shannon A. Mahan. "User Guide for Luminescence Sampling in Archaeological and Geological Contexts." Advances in Archaeological Practice 3, no. 2 (May 2015): 166–77. http://dx.doi.org/10.7183/2326-3768.3.2.166.

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AbstractLuminescence dating provides a direct age estimate of the time of last exposure of quartz or feldspar minerals to light or heat and has been successfully applied to deposits, rock surfaces, and fired materials in a number of archaeological and geological settings. Sampling strategies are diverse and can be customized depending on local circumstances, although all sediment samples need to include a light-safe sample and material for dose-rate determination. The accuracy and precision of luminescence dating results are directly related to the type and quality of the material sampled and sample collection methods in the field. Selection of target material for dating should include considerations of adequacy of resetting of the luminescence signal (optical and thermal bleaching), the ability to characterize the radioactive environment surrounding the sample (dose rate), and the lack of evidence for post-depositional mixing (bioturbation in soils and sediment). Sample strategies for collection of samples from sedimentary settings and fired materials are discussed. This paper should be used as a guide for luminescence sampling and is meant to provide essential background information on how to properly collect samples and on the types of materials suitable for luminescence dating.

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21

Molodkov, Anatoly, Ivar Jaek, and Valery Vasilchenko. "Anomalous Fading of Ir-Stimulated Luminescence from Feldspar Minerals: Some Results of the Study." Geochronometria 26, no. -1 (January 1, 2007): 11–17. http://dx.doi.org/10.2478/v10003-007-0007-0.

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Anomalous Fading of Ir-Stimulated Luminescence from Feldspar Minerals: Some Results of the StudyAn increasing amount of evidence shows that the use of feldspars in luminescence dating may suffer from significant age underestimates, which are thought to result from anomalous fading. In the hope of finding a solution to the problem we undertook physical investigations of kinetics and temperature dependencies of tunnel afterglow of these minerals. As a result, the method of the direct detection of the tunnel transitions from the dosimetric traps is proposed. Some other relevant results obtained are also presented and discussed. Particularly, the probable reasons of absence of effects of anomalous fading in the feldspar samples investigated in the present work are elucidated.

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22

King, Georgina E., Sumiko Tsukamoto, Frédéric Herman, Rabiul H. Biswas, Shigeru Sueoka, and Takahiro Tagami. "Electron spin resonance (ESR) thermochronometry of the Hida range of the Japanese Alps: validation and future potential." Geochronology 2, no. 1 (January 24, 2020): 1–15. http://dx.doi.org/10.5194/gchron-2-1-2020.

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Abstract. The electron spin resonance (ESR) of quartz has previously been shown to have potential for determining rock cooling histories; however, this technique remains underdeveloped. In this study, we explore the ESR of a suite of samples from the Hida range of the Japanese Alps. We develop measurement protocols and models to constrain the natural trapped-charge concentration as well as the parameters that govern signal growth and signal thermal decay. The thermal stability of the Al and Ti centres is similar to that of the luminescence of feldspar. Inverting the ESR data for cooling yields similar thermal histories to paired luminescence data from the same samples. However, a series of synthetic inversions shows that whereas the luminescence of feldspar can only resolve minimum cooling histories of ∼160 ∘C Myr−1 over timescales of 103−5 years, quartz ESR may resolve cooling histories as low as 25–50 ∘C Myr−1 over timescales of 103−7 years. This difference arises because quartz ESR has a higher dating limit than the luminescence of feldspar. These results imply that quartz ESR will be widely applicable in the constraint of late-stage rock cooling histories, providing new insights into landscape evolution over late Quaternary timescales.

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Gaar, Dorian, Sally Lowick, and Frank Preusser. "Performance of different luminescence approaches for the dating of known-age glaciofluvial deposits from northern Switzerland." Geochronometria 41, no. 1 (March 1, 2014): 65–80. http://dx.doi.org/10.2478/s13386-013-0139-0.

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AbstractLuminescence properties of two samples taken from sand lenses in proglacial outwash de-posits of a piedmont glacier that reached the Swiss midlands during the Last Glacial Maximum are investigated in detail. Deconvolution of CW-OSL decay curves shows that the fast component dominates the OSL signal of quartz. The chemistry of single feldspar grains, in particular the K content in different grains, is determined using wavelength dispersive spectrometry (electron microprobe), revealing an average 12.9 wt.% K of the grains contributing to the IRSL signal. D e distributions are investigated in order to gain insights into partial bleaching, and agreement is found for quartz OSL and feldspar IR50 and pIRIR225 ages for small aliquots and single grains when applying the Minimum Age Model. These ages are also consistent with independent age control. For one sample, ages determined using the Central Age Model result in highly overestimated ages for both feldspar and quartz.

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Fattahi, Morteza, and Stephen Stokes. "Red luminescence from potassium feldspar for dating applications: a study of some properties relevant for dating." Radiation Measurements 37, no. 6 (December 2003): 647–60. http://dx.doi.org/10.1016/s1350-4487(03)00246-4.

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Barré, Magali, and Michel Lamothe. "Luminescence dating of archaeosediments: A comparison of K-feldspar and plagioclase IRSL ages." Quaternary Geochronology 5, no. 2-3 (April 2010): 324–28. http://dx.doi.org/10.1016/j.quageo.2009.03.004.

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Li, Bo, and Sheng-Hua Li. "Luminescence dating of K-feldspar from sediments: A protocol without anomalous fading correction." Quaternary Geochronology 6, no. 5 (October 2011): 468–79. http://dx.doi.org/10.1016/j.quageo.2011.05.001.

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Kars, Romée H., Tony Reimann, Christina Ankjaergaard, and Jakob Wallinga. "Bleaching of the post-IR IRSL signal: new insights for feldspar luminescence dating." Boreas 43, no. 4 (April 29, 2014): 780–91. http://dx.doi.org/10.1111/bor.12082.

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Mittelstraß, Dirk, and Sebastian Kreutzer. "Spatially resolved infrared radiofluorescence: single-grain K-feldspar dating using CCD imaging." Geochronology 3, no. 1 (May 21, 2021): 299–319. http://dx.doi.org/10.5194/gchron-3-299-2021.

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Abstract. The success of luminescence dating as a chronological tool in Quaternary science builds upon innovative methodological approaches, providing new insights into past landscapes. Infrared radiofluorescence (IR-RF) on K-feldspar is such an innovative method that was already introduced two decades ago. IR-RF promises considerable extended temporal range and a simple measurement protocol, with more dating applications being published recently. To date, all applications have used multi-grain measurements. Herein, we take the next step by enabling IR-RF measurements on a single grain level. Our contribution introduces spatially resolved infrared radiofluorescence (SR IR-RF) on K-feldspars and intends to make SR IR-RF broadly accessible as a geochronological tool. In the first part of the article, we detail equipment, CCD camera settings and software needed to perform and analyse SR IR-RF measurements. We use a newly developed ImageJ macro to process the image data, identify IR-RF emitting grains and obtain single-grain IR-RF signal curves. For subsequent analysis, we apply the statistical programming environment R and the package Luminescence. In the second part of the article, we test SR IR-RF on two K-feldspar samples. One sample was irradiated artificially; the other sample received a natural dose. The artificially irradiated sample renders results indistinguishable from conventional IR-RF measurements with the photomultiplier tube. The natural sample seems to overestimate the expected dose by ca. 50 % on average. However, it also shows a lower dose component, resulting in ages consistent with the same sample's quartz fraction. Our experiments also revealed an unstable signal background due to our cameras' degenerated cooling system. Besides this technical issue specific to the system we used, SR IR-RF is ready for application. Our contribution provides guidance and software tools for methodological and applied luminescence (dating) studies on single-grain feldspars using radiofluorescence.

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Rades, Eike F., Sumiko Tsukamoto, Manfred Frechen, Qiang Xu, and Lin Ding. "A lake-level chronology based on feldspar luminescence dating of beach ridges at Tangra Yum Co (Southern Tibet)." Quaternary Research 83, no. 3 (May 2015): 469–78. http://dx.doi.org/10.1016/j.yqres.2015.03.002.

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Many lakes on the Tibetan Plateau exhibit strandplains with a series of beach ridges extending high above the current lake levels. These beach ridges mark former lake highstands and therefore dating their formation allows the reconstruction of lake-level histories and environmental changes. In this study, we establish a lake-level chronology of Tangra Yum Co (fifth largest lake on the Tibetan Plateau) based on luminescence dating of feldspar from 17 beach-ridge samples. The samples were collected from two strandplains southeast and north of the lake and range in elevation from the current shore to 140 m above the present lake. Using a modified post-infrared IRSL protocol at 170°C we successfully minimised the anomalous fading in the feldspar IRSL signal, and obtained reliable dating results. The luminescence ages indicate three different stages of lake-level decline during the Holocene: (1) a phase of rapid decline (~ 50 m) from ~ 6.4 to ~ 4.5 ka, (2) a period of slow decline between ~ 4.5 and ~ 2.0 ka (~ 20 m), and (3) a fast decline by 70 m between ~ 2 ka and today. Our findings suggest a link between a decrease in monsoonal activity and lake-level decline since the early Holocene.

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ISHIBASHI, Toru, Issei SUZUKI, Haijiang LIU, Tomohiro TAKAGAWA, and Shinji SATO. "Development Process of Hamamatsu Strand Plain Elucidated from Optically Stimulated Luminescence Dating using Feldspar." Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 65, no. 1 (2009): 611–15. http://dx.doi.org/10.2208/kaigan.65.611.

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Wallinga, J., A. S. Murray, G. A. T. Duller, and T. E. Törnqvist. "Testing optically stimulated luminescence dating of sand-sized quartz and feldspar from fluvial deposits." Earth and Planetary Science Letters 193, no. 3-4 (December 2001): 617–30. http://dx.doi.org/10.1016/s0012-821x(01)00526-x.

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Li, Bo, Sheng-Hua Li, Geoffrey A. T. Duller, and Ann G. Wintle. "Infrared stimulated luminescence measurements of single grains of K-rich feldspar for isochron dating." Quaternary Geochronology 6, no. 1 (February 2011): 71–81. http://dx.doi.org/10.1016/j.quageo.2010.02.003.

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Smedley, R. K., and N. J. G. Pearce. "Internal U, Th and Rb concentrations of alkali-feldspar grains: Implications for luminescence dating." Quaternary Geochronology 35 (October 2016): 16–25. http://dx.doi.org/10.1016/j.quageo.2016.05.002.

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Reimann, Tony, Christina Ankjærgaard, and Jakob Wallinga. "Testing the potential of a transferred IRSL (T-IRSL) feldspar signal for luminescence dating." Radiation Measurements 81 (October 2015): 275–81. http://dx.doi.org/10.1016/j.radmeas.2015.01.002.

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Al Khasawneh, Sahar, Andrew S. Murray, Stephen Bourke, and Dominik Bonatz. "Testing feldspar luminescence dating of young archaeological heated materials using potshards from Pella (Tell Tabqat Fahl) in the Jordan valley." Geochronometria 44, no. 1 (May 2, 2017): 98–110. http://dx.doi.org/10.1515/geochr-2015-0056.

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Abstract Recent developments in the use of more stable feldspar signals in the luminescence dating of sediments offer the possibility of obtaining accurate feldspar luminescence ages for ceramic artefacts; this is especially interesting in locations which do not provide suitable quartz extracts. Here we examine the application of the stable infrared stimulated luminescence signal measured at elevated temperature (in this case 290°C; pIRIR290) after stimulation at about room temperature to Levantine pottery samples. A total of 52 potsherds were collected from three superimposed iron-age units at Pella (Jordan); based on 14C dating, typology and seriation these units were deposited between 700 and 900 BCE. Sand-sized quartz extracts were unsuitable, and there was insufficient sand-sized feldspar, and so polymineral fine grains were chosen for dating. Various tests for reliability were undertaken (dose recovery, dependence of De on first stimulation temperature etc.). The pIRIR signals are weak, and 14 potsherds were rejected on this basis. Of the remainder, 3 were confidently identified as outliers. Based on those sherds for which IR signals were sufficiently intense, we use the ratio of the IR50 to pIRIR290 signals to argue that these outliers do not arise from incomplete resetting during manufacture. The ages from each layer are considerably over dispersed (typically by ∼25%) but average ages for each unit are consistent with each other and with the expected age range. The average OSL age for the site is 2840 ± 220 years (n = 35), with the overall uncertainty dominated by systematic uncertainties; this average is consistent with the range of 14C ages from 970–1270 BCE reported from across the destruction horizon. We conclude that the pIRIR290 signal is delivering accurate ages, but that the variability in age from shard to shard is much greater than would be expected from known sources of uncertainty. This demonstrates the need for site ages to be based on multiple samples; individual shard ages are unlikely to be sufficiently accurate.

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Li, Bo, Sheng-Hua Li, and Ann Wintle. "Overcoming Environmental Dose Rate Changes in Luminescence Dating of Waterlain Deposits." Geochronometria 30, no. -1 (January 1, 2008): 33–40. http://dx.doi.org/10.2478/v10003-008-0003-z.

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Overcoming Environmental Dose Rate Changes in Luminescence Dating of Waterlain DepositsThis study investigates lacustrine and fluvial sediments on the Sala Us River in the Mu Us Desert in central north China. Significant changes in environmental dose rate in part of the section could be shown to have occurred from measurements of the present day radioactivity and by the age reversal for some samples that had been dated by optically stimulated luminescence (OSL) measurements on quartz. These changes in dose rate can be attributed to recent uptake of radioactive elements found in the sediments; this resulted in significant underestimation of the OSL ages. In this study, the new isochron method using K-feldspar grains has been applied to overcome the effects of changes in dose rate. Calculations are used to show that changes in the environmental dose rate factors, i.e. K, U, Th, water content and cosmic ray flux, and disequilibrium in the U and Th decay chains, e.g. radon escape, have a negligible effect on the isochron age. After applying the new isochron method, the effects of changes in dose rate caused by recent uptake of radioactive elements and changes in past water content were effectively overcome and true ages are obtained; this was verified by repeating the luminescence isochron measurements on samples of overlying and underlying sediments.

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Klasen, Nicole, Christa Loibl, Janet Rethemeyer, and Frank Lehmkuhl. "Testing feldspar and quartz luminescence dating of sandy loess sediments from the Doroshivtsy site (Ukraine) against radiocarbon dating." Quaternary International 432 (March 2017): 13–19. http://dx.doi.org/10.1016/j.quaint.2015.05.036.

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Jaek, I., A. Molodkov, and V. Vasilchenko. "Instability of luminescence responses in feldspar-and quartz-based paleo-dosimeters." Journal of Applied Spectroscopy 75, no. 6 (November 2008): 820–25. http://dx.doi.org/10.1007/s10812-009-9127-9.

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al Khasawneh, Sahar, Andrew Murray, Zeidan Kafafi, and Lucas Petit. "Luminescence Dating of the Iron Age Deposits from Tell Damiyah in the Jordan Valley." Radiocarbon 62, no. 1 (August 6, 2019): 1–12. http://dx.doi.org/10.1017/rdc.2019.90.

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ABSTRACTIn this study, we investigate quartz-based luminescence optical dating of Iron Age deposits at the archaeological site of Tell Damiyah in the Jordan valley. Ten samples, taken from different occupation layers from two different excavation areas, proved to have good luminescence characteristics (fast-component dominated, dose recovery ratio 1.032 ± 0.010, n=24). The optical ages are completely consistent with both available 14C ages and ages based on stylistic elements; it appears that this material was fully reset at deposition, although it is recognised that the agreement with age control is somewhat dependent on the assumed field water content of the samples. Further comparison with different OSL signals from feldspar, or investigations based on dose distributions from individual grains would be desirable to independently confirm the resetting of this material. It is concluded that the sediments of Tell Damiyah are very suitable for luminescence dating. Despite the relatively large associated age uncertainties of between 5 and 10%, OSL at tell sites has the potential to provide ages for material very difficult to date by conventional methods, and to identify reworked mixtures of older artifacts in a younger depositional setting.

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Thiel, Christine, Sumiko Tsukamoto, Kayoko Tokuyasu, Jan-Pieter Buylaert, Andrew S. Murray, Kazuhiro Tanaka, and Masaaki Shirai. "Testing the application of quartz and feldspar luminescence dating to MIS 5 Japanese marine deposits." Quaternary Geochronology 29 (August 2015): 16–29. http://dx.doi.org/10.1016/j.quageo.2015.05.008.

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Tsukamoto, Sumiko, Reisuke Kondo, Tobias Lauer, and Mayank Jain. "Pulsed IRSL: A stable and fast bleaching luminescence signal from feldspar for dating Quaternary sediments." Quaternary Geochronology 41 (August 2017): 26–36. http://dx.doi.org/10.1016/j.quageo.2017.05.004.

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BUYLAERT, JAN-PIETER, SÉBASTIEN HUOT, ANDREW S. MURRAY, and PETER VAN DEN HAUTE. "Infrared stimulated luminescence dating of an Eemian (MIS 5e) site in Denmark using K-feldspar." Boreas 40, no. 1 (May 6, 2010): 46–56. http://dx.doi.org/10.1111/j.1502-3885.2010.00156.x.

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Sohbati, Reza, Andrew Murray, Mayank Jain, Jan-Pieter Buylaert, and Kristina Thomsen. "Investigating the resetting of OSL signals in rock surfaces." Geochronometria 38, no. 3 (September 1, 2011): 249–58. http://dx.doi.org/10.2478/s13386-011-0029-2.

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Abstract There are many examples of buried rock surfaces whose age is of interest to geologists and archaeologists. Luminescence dating is a potential method which can be applied to dating such surfaces; as part of a research project which aims to develop such an approach, the degree of resetting of OSL signals in grains and slices from five different cobbles/boulders collected from a modern beach is investigated. All the rock surfaces are presumed to have been exposed to daylight for a prolonged period of time (weeks to years). Feldspar was identified as the preferred dosimeter because quartz extracts were insensitive. Dose recovery tests using solar simulator and IR diodes on both K-feldspar grains and solid slices taken from the inner parts of the rocks are discussed. Preheat plateau results using surface grains and slices show that significant thermal transfer in naturally bleached samples can be avoided by keeping preheat temperatures low. Equivalent doses from surface K-feldspar grains were highly scattered and much larger than expected (0.02 Gy to >100 Gy), while solid surface slices gave more reproducible small doses (mean = 0.17±0.02 Gy, n = 32). Neither crushing nor partial bleaching were found to be responsible for the large scattered doses from grains, nor did the inevitable contribution from Na-feldspar to the signal from solid slices explain the improved reproducibility in the slices. By modelling the increase of luminescence signal with distance into the rock surface, attenuation factors were derived for two samples. These indicate that, for instance, bleaching at a depth of 2 mm into these samples occurs at about ∼28% of the rate at the surface. We conclude that it should be possible to derive meaningful burial doses of >1 Gy from such cobbles; younger samples would probably require a correction for incomplete bleaching.

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Thamó-Bozsó, Edit, Gábor Csillag, Judit Füri, Attila Nagy, and Árpád Magyari. "Age of sediments on Danube terraces of the pest plain (Hungary) based on optically stimulated luminescence dating of quartz and feldspar." Geochronometria 47, no. 1 (January 1, 2020): 171–86. http://dx.doi.org/10.2478/geochr-2020-0021.

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Abstract The numerical ages available for the sediments on the Danube terraces in the Pest Plain are scarce. In this study, we present quartz OSL and K feldspar post-IR IRSL290 ages for the sandy fluvial, aeolian and slope sediments collected from Danube terraces IIb, III and V. The feldspar post-IR IRSL290 ages without residual dose subtraction are older than the quartz OSL ages, except for one sample, but the two sets of ages are overlapping within one or two sigma errors. In the bleaching experiment under natural sunlight during summer, an unbleachable component ranging from 2.5±0.7 Gy to 5.2±0.3 Gy after 30 h exposure to bright sunshine is observed and it corresponds to 3−8% of the measured K feldspar post-IR IRSL290 equivalent doses. These facts indicate that residual dose subtraction would be necessary before age calculation, in most cases. The saturated fluvial gravelly sand of terrace V of the Danube is older than ~ 296 ka based on feldspar post-IR IRSL290 measurements. This age does not contradict the traditional terrace chronology and the earlier published age data of this terrace. The other studied sediments on the surface of the terraces V, III and IIb deposited much later than the formation of these terraces. They infer aeolian activity and fluvial sedimentation of small streams during the MIS 3 and MIS 2 periods. The age of the dated dune sands with coeval aeolian sediments in Hungary indicate the cold and dry periods with strong wind activity of the Late Weichselian.

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Tamura, Toru, Kazumi Ito, Takahiko Inoue, and Tetsuya Sakai. "Luminescence dating of Holocene beach-ridge sands on the Yumigahama Peninsula, western Japan." Geochronometria 44, no. 1 (December 29, 2017): 331–40. http://dx.doi.org/10.1515/geochr-2015-0076.

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Abstract We applied infrared stimulated luminescence (IRSL50) and post-infrared (post-IR) IRSL150 dating to K-feldspar sand obtained from Holocene beach ridges on the Yumigahama Peninsula, Japan, to investigate the rate of progradation of the beach, which has been affected by 17–18th century iron mining in a local river catchment. All samples showed higher equivalent doses for the post-IR IRSL signal. Fading tests indicated that IRSL yielded relatively high g-values (11–13%/decade), while post-IR IRSL yielded negative g-values (–5 to –8%/decade). The corrected IRSL age of the oldest sample, 8.1 ± 1.3 ka, was slightly overestimated with respect to its expected age of 5–6.7 ka. The corrected age is highly dependent on the g-value, which if slightly inaccurate would have caused the overestimate. The uncorrected post-IR IRSL ages were underestimated, and we consider that the post-IR IRSL signal faded. However, given the negative g-values, application of an appropriate fading correction was not feasible. The corrected IRSL ages of the younger samples, coupled with an assumption of residual dose, roughly agreed with the historical shoreline changes, indicating that the rate of shoreline progradation increased markedly during the recent period of mining-related enhanced sediment discharge.

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Morthekai, P., Mayank Jain, Pedro Cunha, José Azevedo, and Ashok Singhvi. "An attempt to correct for the fading in million year old basaltic rocks." Geochronometria 38, no. 3 (September 1, 2011): 223–30. http://dx.doi.org/10.2478/s13386-011-0033-6.

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Abstract The use of feldspar for luminescence dating has been restricted because of anomalous fading. This has made its application to several important geological problems such as volcanic terrains difficult. Presently, two correction procedures are used to correct for anomalous fading. The present study tests these correction procedures using volcanic samples of known ages spanning the time period of 400 ka to 2.2 Ma. These correction procedures provided grossly underestimated ages (up to 60%). The possible causes for the underestimation are discussed.

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King, Georgina. "Depositional pathway tracing in glacial catchments using Optically Stimulated Luminescence dating of K-feldspar and quartz." Quaternary International 279-280 (November 2012): 245–46. http://dx.doi.org/10.1016/j.quaint.2012.08.575.

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Li, Bo, and Sheng-Hua Li. "Luminescence dating of Chinese loess beyond 130 ka using the non-fading signal from K-feldspar." Quaternary Geochronology 10 (July 2012): 24–31. http://dx.doi.org/10.1016/j.quageo.2011.12.005.

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Li, Bo, Richard G. Roberts, Zenobia Jacobs, Sheng-Hua Li, and Yu-Jie Guo. "Construction of a ‘global standardised growth curve’ (gSGC) for infrared stimulated luminescence dating of K-feldspar." Quaternary Geochronology 27 (April 2015): 119–30. http://dx.doi.org/10.1016/j.quageo.2015.02.010.

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Lamothe, M., and M. Auclair. "The fadia method: a new approach in luminescence dating using the analysis of single feldspar grains." Radiation Measurements 32, no. 5-6 (December 2000): 433–38. http://dx.doi.org/10.1016/s1350-4487(00)00124-4.

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