Deciphering long-term coastal dynamics using IR-RF and ESR dating: a case study from Médoc, south-west France

Kreutzer, Sebastian; Duval, Mathieu; Bartz, Melanie; Bertrán, Pascal; Bosq, Mathieu; Eynaud, Frédérique; Verdin, Florence; Mercier, Norbert

doi:10.1016/j.quageo.2018.09.005

Cited by 21 publications

(40 citation statements)

References 53 publications

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“…Our results strengthen the validity of ESR-MC method to accurately date sedimentary successions in fluvial context proposed in previous studies (Tissoux et al, 2007;Bartz et al 2018Bartz et al , 2019del Val et al 2019;Duval et al , 2017Gouveia et al 2020;Kreutzer et al 2018;Mendez Quintas et al 2018;Sahnouni et al 2018). The only discordant sample, Isoletta ESR1, was carried out from extremely coarse and poorly sorted sediments probably of colluvial origin, in which quartz grains could not have been completely bleached, or in relation with a poor dose rate reconstruction in the age calculation process.…”

Section: Resultssupporting

confidence: 90%

“…The joint use of the Al and Ti centres, or MC approach, is therefore intended to better estimate the quality of the sediment bleaching during transport. This approach has been used several times in recent years, and several studies have shown its potential in a variety of sedimentary contexts and for periods ranging from the Lower to the Upper Pleistocene (Bartz et al 2018Gouveia et al 2020;Kreutzer et al 2018;).…”

Section: Esr Dating Methodsmentioning

confidence: 99%

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ESR dating applied to optically bleached quartz - A comparison with 40Ar/39Ar chronologies on Italian Middle Pleistocene sequences

Voinchet

Pereira

Nomade

et al. 2020

Quaternary International

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Resultssupporting

confidence: 90%

Section: Esr Dating Methodsmentioning

confidence: 99%

ESR dating applied to optically bleached quartz - A comparison with 40Ar/39Ar chronologies on Italian Middle Pleistocene sequences

Voinchet

Pereira

Nomade

et al. 2020

Quaternary International

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“…The second K-feldspar sample (BDX16651, grain size: 100 − 200 µm) originates from a coastal dune in the Médoc area (southwest France). For this sample, Kreutzer et al (2018) estimated a palaeodose of 50.7 ± 5.7 Gy for the quartz fraction and 96.2 ± 8.0 Gy for the here measured K-feldspar fraction. For details on the sample preparation procedures, we refer to the cited literature.…”

Section: Samplesmentioning

confidence: 52%

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

Mittelstraß¹,

Kreutzer²

2021

Preprint

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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 already introduced two decades ago. IR-RF promises considerable extended temporal range and a simple measurement protocol, with more dating applications published recently. To date, all applications use 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 manuscript, 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 manuscript, 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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“…A few recent applications studies may provide a fair idea of the time range applicability achieved by the MC approach. Ti-H signal has proven to produce age estimates consistent with independent age control from about 300 ka to 40 ka (e.g., Duval et al, 2017;Kreutzer et al, 2018), while Ti-Li and Al centres may provide accurate age results between about 200 ka and 2 Ma (Beerten and Stesman, 2006;Mendez-Quintas et al, 2018;Sahnouni et al 2018;Voinchet et al, this issue). For a time period younger than about 40 ka, none of the Al and Ti centres seem to yield accurate age results (e.g., Mendez-Quintas et al, 2018), which indicate the difficulty to detect low dose estimates (<100 Gy) with these signals.…”

Section: Accepted Manuscriptmentioning

confidence: 95%

ESR and ESR/U-series chronology of the Middle Pleistocene site of Tourville-la-Rivière (Normandy, France) - A multi-laboratory approach

Bahain

Duval

Voinchet

et al. 2020

Quaternary International

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Tourville-la-Rivière (Normandy, France) is one of the rare Middle Pleistocene palaeoanthropological localities of Northern France. Electron Spin Resonance (ESR) and combined ESR/U-series dating methods were independently applied by different teams on sediments and teeth from this site. The present work provides an overview of this multi-laboratory dating work by integrating a description and discussion of the methodologies employed and results obtained. Results confirm that the ESR/U-series analyses of the teeth are greatly dependent on the U-uptake histories of the dental tissues. Although all teeth come from the same archeological level, the samples analysed by each team display two different patterns for the U-series data. This is most likely related to the different sampling areas selected by each team and may be interpreted as the result of local variations in the geochemical conditions of the surrounding environment. Concerning the ESR dating of optically bleached quartz grains, the use of the multiple centre approach seems crucial when dating such fluvial and fluvio-lacustrine sediments. Our results also confirm the great potential of the Ti-H centre to date late Middle Pleistocene deposits. Despite some (expected) discrepancies related to the independent use of parameters and approaches by the different teams involved in this multi-laboratory study, the whole ESR and ESR/U-series data set collected from Tourville-la-Rivière locality consistently correlates stratigraphic levels D1 to I and associated human occupation to MIS7.

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Deciphering long-term coastal dynamics using IR-RF and ESR dating: a case study from Médoc, south-west France

Cited by 21 publications

References 53 publications

ESR dating applied to optically bleached quartz - A comparison with 40Ar/39Ar chronologies on Italian Middle Pleistocene sequences

ESR dating applied to optically bleached quartz - A comparison with 40Ar/39Ar chronologies on Italian Middle Pleistocene sequences

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

ESR and ESR/U-series chronology of the Middle Pleistocene site of Tourville-la-Rivière (Normandy, France) - A multi-laboratory approach

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