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Ultrafast Component Effects on Quartz Single Grains Dose Estimation from Khutagt Uul Mountains, Mongolia

Saran Tengis
Saran Tengis
, 
Saran Solongo
Saran Solongo
 y 
Rinchinkhorol Munkhtulga
Rinchinkhorol Munkhtulga
   | 31 dic 2021
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Publicado en línea: 31 dic 2021
Páginas: 263 - 271
Recibido: 15 feb 2019
Aceptado: 12 jul 2019
DOI: https://doi.org/10.1515/geochr-2015-0117
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© 2019 Saran Tengis et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

The dose-response curves for individual quartz grains of the heated quartz sample L-EVA1201, showing Lx/Tx as a function of regeneration doses. The corresponding luminescence decay curves from the individual grains are shown on the right side: natural OSL (N – black line), test dose (T1 – red line and T after IRSL – blue line) OSL decay curves as a function of stimulation time obtained from single grains. In addition, the corresponding TL measured from the aliquot at the end of the SAR protocol served as additional criteria for examining the presence of feldspar.
The dose-response curves for individual quartz grains of the heated quartz sample L-EVA1201, showing Lx/Tx as a function of regeneration doses. The corresponding luminescence decay curves from the individual grains are shown on the right side: natural OSL (N – black line), test dose (T1 – red line and T after IRSL – blue line) OSL decay curves as a function of stimulation time obtained from single grains. In addition, the corresponding TL measured from the aliquot at the end of the SAR protocol served as additional criteria for examining the presence of feldspar.

Fig. 2

a) and c) The dose-response curves for individual quartz grains of the sedimentary quartz L-EVA1202, showing Lx/Tx as a function of regeneration doses. The corresponding luminescence decay curves from the individual grains are shown on the right side: natural OSL (N – blue line), test dose (T1 – red line and T after IRSL – blue line) OSL decay curves as a function of stimulation time obtained from single grains. In addition, LM-OSL from a bright grain (e) indicated the presence of a significant slow component in addition to the fast component; however those bright grains were rejected.
a) and c) The dose-response curves for individual quartz grains of the sedimentary quartz L-EVA1202, showing Lx/Tx as a function of regeneration doses. The corresponding luminescence decay curves from the individual grains are shown on the right side: natural OSL (N – blue line), test dose (T1 – red line and T after IRSL – blue line) OSL decay curves as a function of stimulation time obtained from single grains. In addition, LM-OSL from a bright grain (e) indicated the presence of a significant slow component in addition to the fast component; however those bright grains were rejected.

Fig. 3

Effect of precision on De a). for sample L-EVA1201. Central Age Model (CAM, squares) dose and the relative standard error (as circles) on CAM De; b). for sample L-EVA1202. FMM and MAM De (triangles and squares) as function of precision on De.
Effect of precision on De a). for sample L-EVA1201. Central Age Model (CAM, squares) dose and the relative standard error (as circles) on CAM De; b). for sample L-EVA1202. FMM and MAM De (triangles and squares) as function of precision on De.

Fig. 4

a) The fitting results for pottery L-EVA1201, and for sedimentary quartz LEVA1202 showing the presence of UF, F and medium OSL components. b) The corresponding constant and increasing De-t-plots for L-EVA1201 and L_EVA1202 are shown.
a) The fitting results for pottery L-EVA1201, and for sedimentary quartz LEVA1202 showing the presence of UF, F and medium OSL components. b) The corresponding constant and increasing De-t-plots for L-EVA1201 and L_EVA1202 are shown.

Fig. 5

Growth curves for naturally sedimentary and heated quartz grains.
Growth curves for naturally sedimentary and heated quartz grains.

Fig. 6

Radial plots of the single grain dose distributions a) fast De from accepted 167 grains (closed triangles) for heated quartz L-EVA1201 and UF De from n = 159 (circles). The solid grey band is centered on the weighted mean, De determined using Central Age Model, over-dispersion of 14.7%. b) De from accepted 134 grains of L-EVA1202 channels 6–9. The solid grey lines indicate the CAM De = 15.13 ± 1.47 Gy and overdispersion of 96.8%. MAM De = 5.91±1.38 Gy.
Radial plots of the single grain dose distributions a) fast De from accepted 167 grains (closed triangles) for heated quartz L-EVA1201 and UF De from n = 159 (circles). The solid grey band is centered on the weighted mean, De determined using Central Age Model, over-dispersion of 14.7%. b) De from accepted 134 grains of L-EVA1202 channels 6–9. The solid grey lines indicate the CAM De = 15.13 ± 1.47 Gy and overdispersion of 96.8%. MAM De = 5.91±1.38 Gy.
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