Statistical aspects of equivalent dose and error calculation and display in OSL dating: An overview and some recommendations

Galbraith, R. F.; Roberts, Richard G.

doi:10.1016/j.quageo.2012.04.020

Cited by 583 publications

(416 citation statements)

References 70 publications

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“…The major methodological breakthroughs to date proglacial sediments were, therefore, the introduction of single aliquot and single grain methodologies. In these approaches, several equivalent dose (D e ) measurements from the same sample provide information about the level of bleaching, and different statistical approaches have been proposed to extract the well-bleached fraction from the distribution (Galbraith et al, 1999;Galbraith and Roberts, 2012).…”

Section: Luminescence Datingmentioning

confidence: 99%

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

Stokes

Tarasov

Blomdin

et al. 2015

Quaternary Science Reviews

148

104

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Section: Luminescence Datingmentioning

confidence: 99%

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

Stokes

Tarasov

Blomdin

et al. 2015

Quaternary Science Reviews

148

104

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“…4 and 5. In the literature, several types of figures have been used to represent such distributions, among which radial plots (e.g., Galbraith et al, 1999), T n vs De plots (e.g., Thomsen et al, 2005) or more simply histograms; a disadvantage of the latter being that the uncertainties on individual D e estimates are not displayed (see Galbraith and Roberts, 2012). In Fig.…”

Section: Natural D E Distributionsmentioning

confidence: 99%

The complementarity of luminescence dating methods illustrated on the Mousterian sequence of the Roc de Marsal: A series of reindeer-dominated, Quina Mousterian layers dated to MIS 3

Guérin

Frouin

Tuquoi

et al. 2017

Quaternary International

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Located in southwest France, Roc de Marsal is a cave with a rich Mousterian stratigraphic sequence. The lower part of the sequence (Layers 9-5) are characterized by assemblages dominated by Levallois lithic technology associated with composite faunal spectra (including red deer, roe deer and reindeer) that shows a gradual increase in the frequency of reindeer. The top of the sequence (Layers 4-2) are characterised instead by Quina lithic technology (both in terms of technology and typology) with the faunal remains dominated by reindeer. Roc de Marsal thus provides a very interesting case study to place behavioural changes in a context of changing climates and environments in western Europe during the late Pleistocene. To link the occupations at Roc de Marsal with global and regional climatic conditions known independently, a robust chronology is needed. With this aim in mind, we applied three luminescence dating methods (TL, OSL and IRSL) on different minerals (flint, quartz and K-feldspar extracts). Here the results of two of these methods are presented in detail (TL and OSL) and compared with preliminary IRSL data. At Roc de Marsal, a comparison of methods was necessary to overcome a complex sedimentary history, with very heterogeneous dose rate distributions, both at the beta (mm) and gamma (dm) dose rate scales. The results indicate that the lower Levallois layers are dated to ~65-70 ka, while overlying Quina layers are dated to ~49 ka. These ages for the lower layers fit well with some models that place mixed faunal assemblages in the initial MIS 4; however, while the Quina ages overlap with several other Quina assemblages from the region, they place the reindeer dominated fauna well after the peak cold of MIS 4 and suggest a more extended and complex period of contemporaneous lithic techno-complexes than posited by some current models. AbstractLocated in southwest France, Roc de Marsal is a cave with a rich Mousterian stratigraphic sequence. The lower part of the sequence (Layers 9-5) are characterized by assemblages dominated by Levallois lithic technology associated with composite faunal spectra (including red deer, roe deer and reindeer) that shows a gradual increase in the frequency of reindeer. The top of the sequence (Layers 4-2) are characterised instead by Quina lithic technology (both in terms of technology and typology) with the faunal remains dominated by reindeer. Roc de Marsal thus provides a very interesting case study to place behavioural changes in a context of changing climates and environments in western Europe during the late Pleistocene. To link the occupations at Roc de Marsal with global and regional climatic conditions known independently, a robust chronology is needed. With this aim in mind, we applied three luminescence dating methods (TL, OSL and IRSL) on different minerals (flint, quartz and K-feldspar extracts). Here the results of two of these methods are presented in detail (TL and OSL) and compared with preliminary IRSL data. At Roc de Marsal, a comparison of metho...

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“…However, a comprehensive view on both, standard error and data distribution characteristics requires further steps. Along with a list of the benefits of the radial plot, Galbraith and Roberts (2012) point at the necessity to look at more than one plot type in order to get a comprehensive view on the analysed data, i.e. to explore ages and associated standard errors in different ways.…”

Section: Philosophy and Constructionmentioning

confidence: 99%

“…A kernel density estimate (KDE) is a curve that depicts the empirical estimate of the density function of the distribution that the measured ages were drawn from (Galbraith and Roberts 2012). The size of the kernel (i.e.…”

Section: Philosophy and Constructionmentioning

confidence: 99%

See 1 more Smart Citation

The abanico plot: Visualising chronometric data with individual standard errors

Dietze

Kreutzer

Burow

et al. 2016

Quaternary Geochronology

109

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Numerical dating methods in Quaternary science are faced with the need to adequately visualise data consisting of estimates that have differing standard errors. Recent approaches either focus on the display of age frequency distributions that ignore the standard errors or on radial plots, that allow comparisons between estimates allowing for their differing precisions, but without giving an explicit picture of the age frequency distribution. Hence, visualising both aspects requires at least two plots. Here, an alternative is introduced: The abanico plot. It combines both aspects and therefore allows comprehensive presentation of chronometric data with individual standard errors. It extends the radial plot by a kernel density estimate plot, histogram or dot plot and contains elements that link both plot types. As part of the R package 'Luminescence' (version 0.4.5), the abanico plot is designed as the final part of a comprehensive analysis chain of luminescence data but is open to a wide range of other Quaternary dating communities, as illustrated by several examples.

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Statistical aspects of equivalent dose and error calculation and display in OSL dating: An overview and some recommendations

Cited by 583 publications

References 70 publications

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

The complementarity of luminescence dating methods illustrated on the Mousterian sequence of the Roc de Marsal: A series of reindeer-dominated, Quina Mousterian layers dated to MIS 3

The abanico plot: Visualising chronometric data with individual standard errors

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