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Assessing the Dating Potential of Violet Stimulated Luminescence Protocols Cover

Assessing the Dating Potential of Violet Stimulated Luminescence Protocols

Geochronometria
Volume 48 (2021): Issue 1 (January 2021)
By: Mariana Sontag-González,  Marine Frouin,  Bo Li and  Jean-Luc Schwenninger  
Open Access
|Dec 2021

Figures & Tables

Fig. 1

SAR protocol results for samples X6717 (A,B,C), X6444 (D,E,F) and X6888 (G,H,I). (A,D,G) display the natural signal decay curves, with purple triangles representing the VSL signal and insets showing the preceding BSL (blue circles) for comparison. (B,E,H) show the dose response using the long signal interval (0–300 s; 400–500 s BG) of VSL (triangles) and fast interval (0–0.9 s; 90–100 s BG) of BSL (circles). Error bars show standard errors. (C,F,I) show the De distributions of four VSL signal intervals: 0–3 s (BG: 3–10.5 s) (black squares), 0–0.9 s (BG: 450–500 s) (red circles), 9–29 s (BG: 29–80 s) (green triangles) and 0–300 s (BG: 400–500s) (orange diamonds). The BSL De values of X6717 (blue triangles) are shown for comparison. Lines show the CAM De of each interval. Radial plots modified from Dietze and Kreutzer (2017) (R Core Team, 2016).

Fig. 2

MAAD protocol results for samples X6444 (A–C) and X6889 (D–E). (A,D) show the natural dose decay curves and (B,C,E) show the dose response using the signal interval 0–300 s (BG: 400–500s). (B,E) resulted from the shortened preheat (10 s) measurement (purple triangles in (A,D)), while (C) resulted from the 100 s preheat measurement (orange triangle in (A)). The CAM of nMAD accepted aliquots were fitted with a linear function in (C) and an exponential function in (E). The green vertical lines correspond to the expected De. Error bars show the standard errors.

Details of the studied samples_

SiteSample codeDating methodAge (ka)Expected dose (Gy)
Grotte Mandrin, FranceX6717BSL41 ± 367.3 ± 3.0
Sima de las Palomas, SpainX6889BSL102.1 ± 12.0204.5 ± 16.3
Brooksby Quarry, UKX6444geology>200>300
Cueva Negra, SpainX6888palaeomagnetism, biostratigraphy780–990600–1190

VSL De estimates using the SAR protocol_ The VSL De values that match the expected dose at 1 sigma are in bold type_

SampleSignal (s)Background (s)#1Overdispersion (%)De ± se (Gy)2
X67170–0.9450–5008/1213.3 ± 6.559.7 ± 4.1
0–300400–50010/1232.1 ± 7.453.6 ± 5.5
0–33–10.57/12-52.4 ± 3.9
9–2929–805/1236.7 ± 12.369.8 ± 11.8
X64440–0.9450–5004/1314.7 ± 8.9199.4 ± 19.8
0–300400–5008/1327.2 ± 7.2202.2 ± 20.1
0–33–10.54/13-141.5 ± 14.1
9–2929–803/13-339.9 ± 67.4
X68880–0.9450–5003/3-199.0 ± 12.4
0–300400–5003/35.5 ± 4.8124.7 ± 5.8
0–33–10.53/3-165.2 ± 25.2
9–2929–801/3-354.5 ± 61.0

Protocols used in this study_ Alterations are in bold_ Note that for the MAAD protocol, only the measurement parameters were based on Ankjærgaard et al_ (2016), not the method to estimate the De_

StepSAR(adapted from Hernandez and Mercier (2015))MAAD(adapted from Ankjærgaard et al. (2016))Function
0-Additive dose
1Preheat (260°C, 10 s)Preheat (300°C, 100 s or 10 s)Empty thermally unstable components
2Blue bleach (125°C, 40 s)Blue bleach (125°C, 100 s)Empty shallow trapped charge
3VSL (125°C, 500 s)VSL (30°C, 500 s)Measure deep trapped charge (Ln, Lx or La)
4Violet bleach (200°C, 500 s)-Reduce recuperation
5Test dose (18 Gy)Test dose (50 Gy)Sensitivity correction
6Preheat (260°C, 10 s)Preheat (300°C, 100 s or 10 s)Empty thermally unstable components
7Blue bleach (125°C, 40 s)Blue bleach (125°C, 100 s)Empty shallow trapped charge
8VSL (125°C, 500 s)VSL (30°C, 500 s)Measure deep trapped charge (Tn, Tx or Ta)
9Violet bleach (200°C, 500 s)-Reduce recuperation
10Regenerative dose-
DOI: https://doi.org/10.1515/geochr-2015-0115 | Journal eISSN: 1897-1695
Journal RSS Feed
Language: English
Page range: 121 - 128
Submitted on: Jan 14, 2019
|
Accepted on: Jul 12, 2019
|
Published on: Dec 31, 2021
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Violet Stimulated Luminescence,
VSL,
Dating,
Quartz,
MAAD
Related subjects:
Geosciences,
Geosciences, other

© 2021 Mariana Sontag-González, Marine Frouin, Bo Li, Jean-Luc Schwenninger, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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