Optical Dating of Single and Multiple Grains of Quartz From Jinmium Rock Shelter, Northern Australia: Part I, Experimental Design and Statistical Models*

Galbraith, R. F.; Roberts, Richard G.; Laslett, G. M.; Yoshida, Hiroyuki; Olley, Jon

doi:10.1111/j.1475-4754.1999.tb00987.x

Cited by 2,157 publications

(1,674 citation statements)

References 38 publications

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“…Equivalent dose distributions showed relatively tight distributions, indicating that light-exposure prior to deposition and burial was sufficient to reset the OSL signals of all grains. The Central Age Model (Galbraith et al, 1999) was used to obtain the equivalent dose from the measured distribution. Based on the sample characteristics and equivalent dose distribution we expect this to be an accurate estimate of the dose received by the sample since deposition and burial.…”

Section: Methodsmentioning

confidence: 99%

Climate-driven fluvial development and valley abandonment at the last glacial-interglacial transition (Oude IJssel-Rhine, Germany)

Janssens

Kasse

Bohncke

et al. 2012

Netherlands Journal of Geosciences

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Although numerous studies have been performed on fluvial system change over the last glacial-interglacial transition, the response of river systems to allogenic (climate) and autogenic forcing mechanisms and timing of this response are still not completely understood (e.g. Starkel, 1983;Vandenberghe et al., 1995;Rose, 1995;Blum & Törnqvist, 2000;Gibbard & Lewin, 2002;Vandenberghe, 2008;Erkens, 2009). The valleys of the Rhine and the Maas in the Lower Rhine Embayment have a long research history on this topic (Pons,1957;Van de Meene, 1977;Verbraeck, 1984;Klostermann, 1992;Schirmer, 1995;Berendsen & Stouthamer, 2001;Cohen et al., 2002;Busschers et al., 2007;Erkens et al., 2011). In this area, a well-preserved terraced morphology exists, with OSL-datable fluvial sequences with aeolian cover and with palaeochannel fills that allow vegetation AbstractIn the Weichselian, the Lower Rhine in the Dutch-German border region has used three courses, dissecting ice-marginal topography inherited from the Saalian. In the Late Weichselian, the three courses functioned simultaneously, with the central one gaining importance and the outer ones abandoning. This study aims to reconstruct the fluvial development and forcings that culminated in abandonment of the northern branch 'Oude IJssel-Rhine', at the time of the Lateglacial to Holocene transition. The fluvial architecture is studied using a cored transect over the full width of the valley, detailed cross-sections over palaeochannels and geomorphological analysis using digital elevation and borehole data. Biostratigraphy, radiocarbon dating and OSL dating provide a timeframe to reconstruct the temporal fluvial development. In its phase of abandonment, the fluvial evolution of the Oude IJssel-Rhine course is controlled by the ameliorating climate and related vegetation and discharge changes, besides by intrinsic (autogenic) fluvial behaviour such as the competition for discharge with the winning central branch and the vicinity of the Lippe tributary confluence. The rapid climate warming at the start of the Late Glacial resulted in flow contraction as the initial response. Other fluvial geomorphic adjustments followed, with some delay. An aggrading braided or transitional system persisted until the start of the Allerød, when channel patterns finally changed to meandering. Floodplain incision occurred at the Allerød -Younger Dryas transition and a multi-channel system developed fed by Rhine discharge. At the start of the Holocene, this system transformed into a small-scale, local meandering system, which was abandoned shortly after the start of the Holocene.The final abandonment of the Oude IJssel-Rhine and Niers-Rhine courses can be attributed to deep incision of the Central Rhine course in the earliest Holocene and is considered to be controlled by flow contraction induced by climate and related vegetation and discharge changes.

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Section: Methodsmentioning

confidence: 99%

Climate-driven fluvial development and valley abandonment at the last glacial-interglacial transition (Oude IJssel-Rhine, Germany)

Janssens

Kasse

Bohncke

et al. 2012

Netherlands Journal of Geosciences

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“…For equivalent dose calculation, the first second of the OSL decay curve was used and the background signal was estimated using its last 10 seconds. The ages were calculated using the Central Age Model (CAM) (Galbraith et al, 1999) and are presented in Table 2 and Fig. 4 where the relative probability density functions (Berger, 2010) for all samples are presented on the scale of depth and age.…”

Section: Luminescence Procedures and D E Calculationmentioning

confidence: 99%

OSL chronostratigraphy for loess deposits from Tyszowce – Poland

et al. 2017

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Abstract:The presented work concerns a loess profile located in Tyszowce, in the eastern part of Poland on the Volyn Upland, close to the Ukrainian border. The investigated loess formation is well preserved and is characterised by clear stratigraphic units providing an opportunity to refine the loess chronostratigraphy in Poland. In the paper, we present luminescence ages of loess from the last glacial cycle in SE Poland (up to about 100 ka) together with seven radiocarbon ages. Twenty-one samples were collected and dated using infrared (post-IR IRSL) and blue light stimulated luminescence dating. Two fractions were used, namely polymineral fine grains (4-11 µm) and medium sized quartz grains (45-63 µm). The obtained luminescence ages show very good agreement of both methods in relation to loess deposits, however for the fossil soil units the post-IR IRSL method yields older ages. Radiocarbon dates also confirm luminescence chronostratigraphy for younger units. Moreover, the luminescence results are supported by detailed analyses of grain size distribution, carbonate content and magnetic susceptibility variations allowing to create a comprehensive picture of chronological evolution of this site.

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“…The dose was calculated using exponential curve fitting in Risø Analyst v. 3.24. For the small-aliquot data, the single-aliquot decision protocol of Arnold et al (2007) was followed and the three-parameter minimum-age model (MAM-3; Galbraith et al, 1999) was applied to the data by using an excel macro constructed by Sebastien Huot, after adding a 10% uncertainty (determined from the overdispersion of dose-recovery results) to each value.…”

Section: Luminescence Datingmentioning

confidence: 99%

Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, Sw Sweden

Alexanderson

Fabel

2015

Geochronometria

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Abstract:Brattforsheden is a large glacifluvial deposit in southwestern Sweden and associated with it is one of Sweden's largest inland dune fields. Although the relative ages of the Brattforsheden deposits are well known, absolute ages from the area are few. In this study we have used optically stimulated luminescence (OSL), surface exposure ( 10 Be) and radiocarbon ( 14 C) dating to provide an absolute chronology for the deglaciation and for the Holocene development of the aeolian dunes. Our data show that the deglaciation took place just before 11 ka (11.5 ± 0.6 ka OSL, 11.3 ± 0.8 ka 10 Be), in line with the 14 C-based regional deglaciation age. Aeolian dunes started forming immediately after deglaciation and were active for at least 2000 years, well after vegetation had established. Renewed aeolian activity occurred 270-180 years ago, resulting in the deposition of sand sheets. Comparison between dating methods and studies of OSL dose distributions show that glacial, glacifluvial and littoral sediments suffer from incomplete bleaching and thus that mean OSL ages from such deposits overestimate the true depositional age. By using small aliquots and statistical age models, this effect can partly be countered. Also, some of the 10 Be ages appear too old, which may be due to previous exposure.

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Optical Dating of Single and Multiple Grains of Quartz From Jinmium Rock Shelter, Northern Australia: Part I, Experimental Design and Statistical Models*

Cited by 2,157 publications

References 38 publications

Climate-driven fluvial development and valley abandonment at the last glacial-interglacial transition (Oude IJssel-Rhine, Germany)

Climate-driven fluvial development and valley abandonment at the last glacial-interglacial transition (Oude IJssel-Rhine, Germany)

OSL chronostratigraphy for loess deposits from Tyszowce – Poland

Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, Sw Sweden

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