High-resolution OSL dating of the Costineşti section (Dobrogea, SE Romania) using fine and coarse quartz

Constantin, Daniela; Begy, Róbert; Vasiliniuc, Stefan; Panaiotu, Cristian; Necula, Cristian; Codrea, Vlad; Timar-Gabor, Alida

doi:10.1016/j.quaint.2013.06.016

Cited by 60 publications

(46 citation statements)

References 28 publications

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“…Recent luminescence chronological studies have generally confirmed this statement (Fuchs et al, 2008Novothny et al, 2009;Stevens et al, 2011;Timar-Gabor et al, 2011;Constantin et al, 2014) presenting results that are in good agreement with MIS3 time frame. However, these results also suggest the occurrence of local sedimentary hiatuses within the L1S1 pedocomplex Wacha and Frechen, 2011;Wacha et al, 2013;Fuchs et al, 2013).…”

supporting

confidence: 71%

“…This approach is generally constrained to the last glacial cycle as reliable quartz OSL ages are limited to last glacial loess (Timar-Gabor and Wintle, 2013) and age estimations of older loess and palaeosol units decrease in reliability as the post-IRIRSL 290 signal approaches saturation towards ~300 ka (Murray et al, 2014;Thiel et al, 2014). Nevertheless, a number of useful estimates of sedimentation rates have been determined by using luminescence dating from sites in Serbia (Stevens et al, 2011), Hungary (Újvári et al, 2010;Novothny et al, 2011;Schatz et al, 2012;Thiel et al, 2014) and Romania (Timar et al, 2010;Vasiliniuc et al, 2010;Constantin et al, 2014;Fitzsimmons and Hambach, 2014). At the site of Urluia in southeastern Romania, substantial deposits of the Campanian Ignimbrite volcanic tephra provide a useful upper age limit (ca.…”

mentioning

confidence: 99%

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Danube loess stratigraphy — Towards a pan-European loess stratigraphic model

Marković

Stevens

Kukla

et al. 2015

Earth-Science Reviews

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267

248

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supporting

confidence: 71%

mentioning

confidence: 99%

Danube loess stratigraphy — Towards a pan-European loess stratigraphic model

Marković

Stevens

Kukla

et al. 2015

Earth-Science Reviews

Self Cite

267

248

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“…Second, age discrepancies between the coarse-and the fine-grain fraction have been noted before and are e.g. a widespread problem in southeastern European loess (Timar-Gabor et al, 2012;AnechiteiDeacu et al, 2014;Constantin et al, 2014). In those studies, however, the fine-grain ages were significantly younger than the coarse-grain ages.…”

Section: Discussion Of Osl Resultsmentioning

confidence: 87%

Dating desert pavements – First results from a challenging environmental archive

Fuchs

Dietze

Al-Qudah

et al. 2015

Quaternary Geochronology

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Desert pavements are widespread landforms of arid environments. They consist of a monolayer of clasts at the surface, associated with an underlying unit of eolian fines. In some situations, buried desert pavements can be observed, which is interpreted as a change in the environmental conditions. Therefore, it is believed that desert pavements represent important paleoenvironmental sediment archives, especially for arid environments, where natural archives of past environments are rare. To better understand the formation process of desert pavements and to enable the paleoenvironmental interpretation of these valuable sediment archives, reliable chronologies are of crucial importance. Thus, OSL dating was applied to samples from well-developed desert pavements in two different study areas, the Cima Volcanic Field, eastern Mojave Desert, USA, and the desert of northeastern Badia, Jordan.To test the suitability of the sediments for OSL dating, the luminescence characteristics of the fine-and coarse-grain quartz fraction are described and compared. Finally, first OSL ages are presented.2

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“…MST is the laboratory code used at the Mostistea section from the Romanian Plain Timar-Gabor et al, 2012). CST samples were taken from Costineş ti section near the Black Sea shore (Timar-Gabor and Wintle, 2013;Constantin et al, 2014), samples coded as LCA come from Lunca section in South Western Romania , samples coded as ORL are quartz extracts from Serbian loess , samples coded with XF come from Xifeng section in the Chinese loess plateau (Hao et al, 2012(Hao et al, , 2015 (see details in the supplementary material), while sample coded as RUH comes from Ruhama desert loess section in Israel (Wieder et al, 2008). In addition, samples with an origin other than loess were investigated.…”

Section: Samples Instrumentation and Measurement Protocolmentioning

confidence: 99%

“…A series of investigations carried out using the SAR measurement procedure (Murray and Wintle, 2003) on the quartz OSL signal from different grain sizes extracted from Romanian (TimarGabor et al, 2011(TimarGabor et al, , 2012Timar-Gabor and Wintle, 2013;Constantin et al, 2014) and Serbian loess yielded intriguing results. The optical ages obtained on fine-sand sized quartz grains (63e90 mm) were reported to be systematically higher than those for silt-sized quartz grains (4e11 mm) for ages >~40 ka.…”

Section: Introductionmentioning

confidence: 99%

On the importance of grain size in luminescence dating using quartz

Timar-Gabor

Buylaert

Guralnik

et al. 2017

Radiation Measurements

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h i g h l i g h t sDiscrepancy between quartz SAR-OSL ages obtained on fine and coarse grains. Dose response curve adequately fitted by a sum of two saturating exponentials. Isothermal decay fitted by a single exponential. Clear dependency between the saturation characteristics (D 0 s) and the quartz grain size. No correlation between the 2 D 0 value and the maximum attainable accurate equivalent dose. a r t i c l e i n f o a b s t r a c tThere are two major problems commonly encountered when applying Optically Stimulated Luminescence (OSL) dating in the high dose range: (i) age discrepancy between different grain sizes, and (ii) age underestimation. A marked and systematic discrepancy between fine-grain (4e11 mm) and coarse-grain (63e90 mm) quartz single aliquot regeneration protocol (SAR) ages has been reported previously for Romanian and Serbian loess >40 ka (D e of~100 Gy), generally with fine-grain ages underestimating the depositional age. In this paper, we show a similar age pattern for two grain size fractions from Chinese loess, thus pointing to a potential worldwide phenomenon. While age underestimation is often attributed to signal saturation problems, this is not the case for fine grain material, which saturates at higher doses than coarse grains, yet begins to underestimate true ages earlier. Here we examine the dose response curves of quartz from different sedimentary contexts around the world, using a range of grain sizes (diameters of 4e11 mm, 11e30 mm, 35e50 mm, 63e90 mm, 90e125 mm, 125e180 mm, and 180 e250 mm). All dose response curves can be adequately described by a sum of two saturating exponential functions, whose saturation characteristics (D 0 values) are clearly anticorrelated with grain diameter (4) through an inverse square root relationship, D 0 ¼ A/√4, where A is a scaling factor. While the mechanism behind this grain-size dependency of saturation characteristics still needs to be understood, our results show that the observation of an extended SAR laboratory dose response curve does not necessarily enable high doses to be recorded accurately, or provide a corresponding extended age range.

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High-resolution OSL dating of the Costineşti section (Dobrogea, SE Romania) using fine and coarse quartz

Cited by 60 publications

References 28 publications

Danube loess stratigraphy — Towards a pan-European loess stratigraphic model

Danube loess stratigraphy — Towards a pan-European loess stratigraphic model

Dating desert pavements – First results from a challenging environmental archive

On the importance of grain size in luminescence dating using quartz

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