Luminescence dating of glacial and associated sediments: review, recommendations and future directions

Fuchs, Markus; Owen, Lewis A.

doi:10.1111/j.1502-3885.2008.00052.x

Cited by 234 publications

(205 citation statements)

References 166 publications

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“…The OSL age of the till at Västra höjden is not expected to give the age of the deglaciation, since till seldom is completely bleached, particularly not subglacial till (Fuchs and Owen, 2008). In this case, the very high equivalent dose (Table 5) supports a subglacial (no bleaching) origin for the till.…”

Section: Discussion Deglaciationmentioning

confidence: 80%

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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Section: Discussion Deglaciationmentioning

confidence: 80%

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

Alexanderson

Fabel

2015

Geochronometria

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“…As such, OSL ages under most circumstances may be considered as maximum age estimates. These factors are discussed in detail in Richards (2000) and Fuchs and Owen (2008). An assessment of these factors and the uncertainty associated with the method can be made by examining the protocols, methods and calculations used to determine the OSL ages.…”

Section: Timing Of Glaciationmentioning

confidence: 99%

Quaternary glaciation of the Himalayan–Tibetan orogen

Owen

Caffee

Finkel

et al. 2008

J Quaternary Science

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205

141

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Glacial geological evidence from throughout the Himalayan-Tibetan orogen is examined to determine the timing and extent of late Quaternary glaciation in this region and its relation to similar changes on a global scale. The evidence summarised here supports the existence of expanded ice caps and extensive valley glacier systems throughout the region during the late Quaternary. However, it cannot yet be determined whether the timing of the extent of maximum glaciation was synchronous throughout the entire region or whether the response was more varied. The lack of organic material needed for radiocarbon dating has hindered past progress in glacial reconstruction; however, application of optically stimulated luminescence and terrestrial cosmogenic radionuclide methods has recently expanded the number of chronologies throughout the region. Limits to the precision and accuracy available with these methods and, more importantly, geological uncertainty imposed by processes of moraine formation and alteration both conspire to limit the time resolution on which correlations can be made to Milankovitch timescales (several ka). In order to put all studies on a common scale, well-dated sites have been re-evaluated and all the published terrestrial cosmogenic nuclide ages for moraine boulders and glacially eroded surfaces in the Himalayan-Tibetan orogen have been recalculated. Locally detailed studies indicate that there are considerable variations in the extent of glaciation from one region to the next during a glaciation. Glaciers throughout monsoon-influenced Tibet, the Himalaya and the Transhimalaya are likely synchronous both with climate change resulting from oscillations in the South Asian monsoon and with Northern Hemisphere cooling cycles. In contrast, glaciers in Pamir in the far western regions of the Himalayan-Tibet orogen advanced asynchronously relative to the other regions that are monsooninfluenced regions and appear to be mainly in phase with the Northern Hemisphere cooling cycles. Broad patterns of local and regional variability based on equilibrium-line altitudes have yet to be fully assessed, but have the potential to help define changes in climatic gradients over time.

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“…Many studies have stressed the importance of sampling suitable glacial sediment facies (Fuchs and Owen, 2008;Thrasher et al, 2009). For the FIS, for example, OSL ages have been produced for a wide variety of deposits related to ice sheet (de)glaciation (e.g.…”

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

142

101

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Luminescence dating of glacial and associated sediments: review, recommendations and future directions

Cited by 234 publications

References 166 publications

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

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

Quaternary glaciation of the Himalayan–Tibetan orogen

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

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