On the internal radioactivity in quartz

Vandenberghe, Dimitri; Corte, F. De; Buylaert, Jan‐Pieter; Kučera, Jan; haute, Peter Van den

doi:10.1016/j.radmeas.2008.01.016

Cited by 200 publications

(108 citation statements)

References 8 publications

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“…An a-value of 0.08±0.02 (ReesJones, 1995;Wallinga et al, 2001) was applied in the calculation of dose rate for feldspar. The internal alpha dose rate for quartz grains are reported in previous studies for similar grain size (e.g., Vandenberghe et al, 2008 …”

Section: Analytical Proceduresmentioning

confidence: 59%

Chronology of Cauvery Delta Sediments from Shallow Subsurface Cores Using Elevated-Temperature Post-IR IRSL Dating of Feldspar

et al. 2010

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Abstract:We present the results of luminescence dating of sediments from two cores from the Cauvery Delta in south-east India. Since all natural quartz OSL signals except one sample were in saturation, the elevated temperature post-IR IRSL protocol for K-feldspar was applied to establish a chronology. Internal dose rates of K-feldspar grains were calculated from the measured internal content of potassium, uranium, thorium and rubidium in the bulk of K-feldspar grains using solution ICP-OES and ICP-MS analysis. A substantial scatter in single-aliquot D e values was observed which is most probably due to the effect of incomplete bleaching of fluvial sediments before burial. A minimum age model was applied to extract possible depositional ages. The study revealed that except an upper layer of Holocene sediments (< 5m), the majority of the upper ~50m of Cauvery delta sediments were deposited between marine isotope stage MIS-5 and MIS-10 or older. The feldspar luminescence ages also indicate the existence of a period of non deposition or erosion in the upper part of the cores.

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Section: Analytical Proceduresmentioning

confidence: 59%

Chronology of Cauvery Delta Sediments from Shallow Subsurface Cores Using Elevated-Temperature Post-IR IRSL Dating of Feldspar

et al. 2010

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“…Se utilizaron los factores de conversión en dosis de Adamiec y Aitken (1998). La tasa de dosis interna se considera insignificante, debido a la reducida concentración de radionucléidos que se ha registrado normalmente en los granos de cuarzo (Murray y Roberts 1997; Vandenberghe et al 2008). Se midió el desequilibrio en la cadena de desintegración del 238 U a través de la actividad del 222 Rn.…”

Section: Datación De Granos De Cuarzounclassified

Datación por <i>ESR</i> del yacimiento arqueológico del Pleistoceno inferior de Vallparadís (Terrassa, Cataluña, España)

Duval¹,

Moreno²,

Shao³

et al. 2011

Trab. prehist.

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Excavated between 2005 and 2007, the site of Vallparadís (Terrassa, Spain) has given an abundant and diversified fauna associated with a rich Mode 1 industry. In order to complete the chronostratigraphic framework, we performed ESR and combined US-ESR dating applied to quartz grains extracted from sediments and fossil teeth, respectively. The results obtained are very significant, giving a weighted mean ESR age of 0.83 ± 0.13 Ma (2σ) for the reference archaeological level of the site (level 10) and another of 0.79 ± 0.23 Ma (2σ) for the archaeological level 12 of the Vallparadís sequence. These ESR results are in total agreement with the ones derived from biochronology and paleomagnetism. This whole dataset allows the elaboration of a reliable and consistent chronostratigraphic framework which chronologically places Vallparadís site in the late Early Pleistocene period, i.e. within a time range comprised between Jaramillo and Brunhes geomagnetic events. Consequently, as well as Gran Dolina-TD6 and Sima del Elefante- TE9 sites, in Atapuerca, Burgos, Vallparadís can be therefore considered as a key site for the study of early hominid settlements in Europe.

Excavado entre 2005 y 2007, el yacimiento de Vallparadís (Terrassa, España) ha aportado una fauna rica y diversa en asociación con un importante conjunto lítico de Modo 1. Con el objetivo de completar el marco cronoestratigráfico, se hicieron dataciones por los métodos de Resonancia Paramagnética Electrónica (Electron Spin Resonance, ESR) y ESR combinada con uranio-torio sobre algunas muestras de granos de cuarzo extraídos de sedimentos y dientes fósiles, respectivamente. Los resultados obtenidos son muy significativos, ofreciendo edades ESR promedias de 0,83 ± 0,13 Ma (2σ) para el nivel arqueológico de referencia del yacimiento (nivel 10) y de 0,79 ± 0,23 Ma (2σ) para el nivel arqueológico 12 de la secuencia de Vallparadís. Dichos resultados por ESR concuerdan con los obtenidos a partir de la biocronología y del paleomagnetismo. El yacimiento de Vallparadís dispone ahora de un marco cronoestratigráfico fiable y coherente, que permite situarlo cronológicamente a finales del Pleistoceno inferior, dentro de un rango temporal comprendido entre los eventos geomagnéticos de Jaramillo y Brunhes. Dicho yacimiento junto a los de Gran Dolina TD-6 y Sima del Elefante TE-9, en Atapuerca, Burgos, se posiciona como un yacimiento clave para el estudio de los primeros poblamientos humanos de Europa

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“…The external beta dose rates were corrected for the effects of etching and attenuation using a factor of 0.94 (± 5% relative uncertainty; Mejdahl, 1979). An internal dose rate of 0.013 ± 0.003 Gy/ka was assumed (Vandenberghe et al, 2008). A water content of 20 ± 5% was used to account for the effect of moisture (Balescu et al, 2003) and the contribution from cosmic radiation was calculated following Prescott and Hutton (1994).…”

Section: Dosimetrymentioning

confidence: 99%

A high resolution optical dating study of the Mostiştea loess-palaeosol sequence (SE Romania) using sand-sized quartz

Vasiliniuc¹,

Timar-Gabor

Vandenberghe

et al. 2011

Geochronometria

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Abstract:We report on SAR-OSL dating of closely-spaced samples from the loess-palaeosol sequence near Mostiştea lake (Danube Plain, SE Romania). We used sand-sized quartz and a SAR protocol that involved a preheat of 10s at 220°C and a test dose cutheat to 180°C. It is shown that these thermal pretreatments isolate a quartz OSL signal that is dominated by the fast component. The behaviour of this signal in the SAR protocol is then documented. The ratio of the measured to given dose tends to lie slightly but systematically above unity (~5% on average) and the recycling ratio below unity (~6% on average); for all samples, the recuperated signal is negligible. Within analytical uncertainty, the nineteen optical ages are internally consistent and agree with the predictions from a palaeomagnetic age-depth model. Although it may be possible to optimize the SAR measurement procedure, the optical ages already confirm the chronostratigraphic position of the uppermost welldeveloped palaeosol in that it formed during MIS 5.The established chronology allows correlating the sequence near Mostiştea lake with that near Mircea Vodă that we investigated earlier.

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On the internal radioactivity in quartz

Cited by 200 publications

References 8 publications

Chronology of Cauvery Delta Sediments from Shallow Subsurface Cores Using Elevated-Temperature Post-IR IRSL Dating of Feldspar

Chronology of Cauvery Delta Sediments from Shallow Subsurface Cores Using Elevated-Temperature Post-IR IRSL Dating of Feldspar

Datación por <i>ESR</i> del yacimiento arqueológico del Pleistoceno inferior de Vallparadís (Terrassa, Cataluña, España)

A high resolution optical dating study of the Mostiştea loess-palaeosol sequence (SE Romania) using sand-sized quartz

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