<abstract xmlns="http://www.w3.org/1999/xhtml">Thermoluminescence (TL) and isothermal thermoluminescence (ITL) signals from K-feldspar were studied. The signals from K-feldspar have provided multiple thermometers for thermochronological study. Protocols of multiple aliquot (MA) additive-dose (A) and regenerative-dose (R) have been applied and tested for equivalent dose (De) determinations using TL and ITL signals (MAA-TL, MAR-TL, MAA-ITL and MAR-ITL). Single aliquot regenerative-dose (SAR) protocol was only applied for De determination using ITL signals (SAR-ITL). A 50–60°C translation of heating temperature was necessary for the ITL De values to agree with TL De values. Based on the experiment results and merits-drawbacks comparison of the five tested protocols, the MAR-TL and SAR-ITL are favorable because of their efficiency and accuracy in De determinations. These two protocols were further applied to the samples from the Nujiang River valley and both explicitly demonstrated the thermal history of the samples. They are suitable for K-feldspar thermochronology study. They, as a parallelism of the previous studies of quartz TL and ITL signals, can provide multiple measures for a rock sample with the same thermal history in geo-thermochronological studies.</abstract>

Thermoluminescence (TL) and isothermal thermoluminescence (ITL) signals from K-feldspar were studied. The signals from K-feldspar have provided multiple thermometers for thermochronological study. Protocols of multiple aliquot (MA) additive-dose (A) and regenerative-dose (R) have been applied and tested for equivalent dose (De) determinations using TL and ITL signals (MAA-TL, MAR-TL, MAA-ITL and MAR-ITL). Single aliquot regenerative-dose (SAR) protocol was only applied for De determination using ITL signals (SAR-ITL). A 50–60°C translation of heating temperature was necessary for the ITL De values to agree with TL De values. Based on the experiment results and merits-drawbacks comparison of the five tested protocols, the MAR-TL and SAR-ITL are favorable because of their efficiency and accuracy in De determinations. These two protocols were further applied to the samples from the Nujiang River valley and both explicitly demonstrated the thermal history of the samples. They are suitable for K-feldspar thermochronology study. They, as a parallelism of the previous studies of quartz TL and ITL signals, can provide multiple measures for a rock sample with the same thermal history in geo-thermochronological studies.

Low temperature thermochronology using thermoluminescence signals from K-feldspar

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Thermoluminescence (TL) and isothermal thermoluminescence (ITL) signals from K-feldspar were studied. The signals from K-feldspar have provided multiple...

Low temperature thermochronology using thermoluminescence signals from K-feldspar

Pubblicato online: 01 giu 2017

Pagine: 112 - 120

Ricevuto: 14 feb 2016

Accettato: 12 feb 2017

DOI: https://doi.org/10.1515/geochr-2015-0057

Parole chiave
thermochronology, luminescence signals, K-feldspar, protocol

© 2016 S.L. Tang and S.H. Li.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Low temperature thermochronology using thermoluminescence signals from K-feldspar

Pubblicato online: 01 giu 2017

Pagine: 112 - 120

Ricevuto: 14 feb 2016

Accettato: 12 feb 2017

DOI: https://doi.org/10.1515/geochr-2015-0057

Parole chiavethermochronology, luminescence signals, K-feldspar, protocol

© 2016 S.L. Tang and S.H. Li.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
thermochronology, luminescence signals, K-feldspar, protocol