JpGU-AGU Joint Meeting 2020

Presentation information

Print

[E] Poster

H (Human Geosciences ) » H-QR Quaternary research

[H-QR04] Innovative Applications of Trapped-Charge Dating to Quaternary Geochronology

convener:Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST), Shin Toyoda(Department of Applied Physics, Faculty of Science, Okayama University of Science), Yuji Ishii(National Institute of Advanced Industrial Science and Technology), Sumiko Tsukamoto(Leibniz Institute for Applied Geophysics )

[HQR04-P03] Comparison of luminescence readers using post-Infrared Infrared stimulated luminescence of K-feldspar from last interglacial marine terrace deposits

*Hayashizaki Ryo1, Eiji Nakata1 (1.Central Research Institute of Electric Power Industry)

Keywords:pIRIR dating, last interglacial marince terrace, Risø OSL/TL Reader, Lexsyg Research

The two types of TL/OSL Readers, Risø TL/OSL Reader and Lexsyg series (Lexsyg Research and Lexsyg Smart), are widely used for luminescence dating. Some researches provide the same results of Quartz OSL dating using the two types of TL/OSL Readers (Lomax et al.2014), therefore it is thought that the two readers perform the same for OSL dating. However, few studies have compared with the two types of readers using K-feldspar OSL dating, especially where the samples are older than 100ka. This study examines post-infrared Infrared Stimulated Luminescence (pIR50/200IR290) dating from last interglacial marince terrace deposits using two types of TL/OSL readers (Risø TL/OSL-DA20 and Lexsyg Research). In addition to the results, we also discuss the differences between the readers, such as their analysis software for measuring fading rate and their differences in disc temperature during analysis.

References
Lomax, J., Kreutzer, S. and Fuchs, M. 2014. Performance tests using the Lexsyg luminescence reader. Geochronometria: 41, 327–333.