Low temperature thermochronology using thermoluminescence signals from K-feldspar

• Autorzy: Tang S. L. , Li S. H.

Identyfikatory

DOI

10.1515/geochr-2015-0057

• Konferencja: Conference Proceedings of the 4th Asia Pacific Luminescence and Electron Spin Resonance Dating Conference Nov 23rd-25th, 2015, Adelaide, Australia.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

thermochronology; luminescence signals; K-feldspar; protocol

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2017
• Tom: Vol. 44, no. 1
• Strony: 112--120
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Tang S. L.

• Department of Earth Sciences, the University of Hong Kong, Pokfulam Road, Hong Kong, China

autor

Li S. H.

• Department of Earth Sciences, the University of Hong Kong, Pokfulam Road, Hong Kong, China

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