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Low temperature thermochronology using thermoluminescence signals from K-feldspar

Shuang-Li Tang
Shuang-Li Tang
 et 
Sheng-Hua Li
Sheng-Hua Li
   | 01 juin 2017
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Publié en ligne: 01 juin 2017
Pages: 112 - 120
Reçu: 14 févr. 2016
Accepté: 12 févr. 2017
DOI: https://doi.org/10.1515/geochr-2015-0057
Mots clés
© 2016 S.L. Tang and S.H. Li.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

Typical luminescence signals from sample N-1. A) Thermoluminescence (TL); B) Isothermal thermoluminescence (ITL).
Typical luminescence signals from sample N-1. A) Thermoluminescence (TL); B) Isothermal thermoluminescence (ITL).

Figure 2

Schematic running sequences of luminescence protocols. A) MAA-TL, B) MAR-TL, C) MAA-ITL, D) MAR-ITL and E) SAR-ITL protocols.
Schematic running sequences of luminescence protocols. A) MAA-TL, B) MAR-TL, C) MAA-ITL, D) MAR-ITL and E) SAR-ITL protocols.

Figure 3

Typical growth (dose response) curves of the luminescence signals of protocols. A) MAA-TL, B) MAR-TL, C)MAA-ITL, D) MAR-ITL and E) SAR-ITL protocols.
Typical growth (dose response) curves of the luminescence signals of protocols. A) MAA-TL, B) MAR-TL, C)MAA-ITL, D) MAR-ITL and E) SAR-ITL protocols.

Figure 4

The SAR-ITL protocol dose recovery test results.
The SAR-ITL protocol dose recovery test results.

Figure 5

Comparison of K-feldspar De results of the MAA-TL, MAR-TL, MAA-ITL, MAR-ITL and SAR-ITL protocols.
Comparison of K-feldspar De results of the MAA-TL, MAR-TL, MAA-ITL, MAR-ITL and SAR-ITL protocols.

Evaluation form of MAA-TL, MAR-TL, MAA-ITL, MAR-ITL and SAR-ITL protocols.

MAA-TLMAR-TLMAA-ITLMAR-ITLSAR-ITL
TL peaks (geothermometers) can be measured in one run✓✓✘✘✘
Well studied kinetics parameters✓✓✘✘✘
Multiple aliquots protocol requires shorter machine time✓✓✓✓✘
TL glow curves indicate the thermal stability✓✓✘✘✘
Overcome weak ITL signals problem✓✓✘✘✘
Sensitivity change of reheating can be minimized✓✘✓✘✘
Apply to ITL signals components fitting✘✘✓✓✓
Don’t need normalization✘✘✘✘✓
Avoid overlapping TL peaks✘✘✓✓✓
Overcome the atmosphere protection of the TL oven✘✘✓✓✓
Overcome blackbody radiation✘✘✓✓✓
Need less sample materials✘✓✘✓✓
Obtain De by interpolation from growth curve✘✓✘✓✓
Advantage ✓Disadvantage ✘

Fugong valley samples De results determined using MAR-TL and SAR-ITL protocols.

SampleDe of MAR-TL (Gy)De of SAR-ITL (Gy)
At 250°CAt 260°CAt 270°CAt 280°CAt 290°CAt 300°CAt 310°CAt 320°CAt 330°CAt 235°CAt 255°C
FG-A23.9±3.133.7±4.850.1±7.576.9±11.2116.5±15.2167.6±19.5227.2±23.8287.5±27.1342.4±30.956.1±12.3146.0±9.1
FG-B20.8±2.830.1±4.247.3±6.477.0±9.5123.6±13.2189.5±16.6271.2±19.4361.4±21.7449.9±23.673.7±11.2203.7±15.6
FG-C29.5±3.743.1±5.665.2±8.299.4±11.5147.9±14.8209.1±16.8276.1±17.1340.4±16.3395.1±17.1109.8±7.0243.2±14.5
eISSN:
1897-1695
Langue:
Anglais
Périodicité:
Volume Open
Sujets de la revue:
Geosciences, other
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