5:15 PM - 6:30 PM
[STT53-P03] Characteristics of ESR and TL signals of quartz in the present river bed sediments and in possible source rocks around Kizu River
Keywords:thermoluminescence, Electron Spin Resonance, sediments provenance, quartz, river bed sediments
Sediment provenance gives important information on the erosion processes, river contention, and crustal movement and so on, suggesting the environments at the time of sediment transportation. By examining the quartz crystals found in sediment and related bedrock, it may be possible to estimate the provenance of sediment.
In this study, we report the characteristics of ESR / TL signals of quartz in the present river bed sediments and in the possible source rocks, to discuss the possibilities of identifying sediment provenance.
All quartz samples were irradiated by gamma ray to a dose of 2.5kGy. ESR signals were observed by ESR spectrometers (JES-X320; X-band JEOL RESONANCE Inc.). TL signals were observed by selecting the wavelength region by using the Time-Resolving Spectroscopy System.
 Ikeya, M., 1993. New Applications of Electron Spin Resonance, Dating, Dosimetry, and Microscopy. World Scientific, Singapore. 500p.
 Aitken, M. J., 1985. Thermoluminescence dating, Acad. Press. Lon. 359 p.
 Aitken, M. J., 1998. An introduction to optical dating. Oxford Sci. Pub. 267 p.
Naruse, T., Ono, Y., Hirakawa, K., Okashita, M., Ikeya, M., 1997. Source areas of eolian dust quartz in East Asia: a tentative reconstruction of prevailing winds in isotope stage 2 using electron spin resonance. Geogr. Rev. Jpn. 70A-1, 15–27.
Toyoda, S., Naruse, T., 2002. Eolian Dust from Asia Deserts to Japanese Islands since the last Glacial Maximum: the Basis for the ESR Method, J. Geomorph. Union. 23-5, 811-820.
Shimada, A., Takada, M., Toyoda, S., 2013. Characteristics of ESR signals and TLCLs of quartz included in various source rocks and sediments in Japan: a clue to sediment provenance. GEOCHRONOMETRIA. 40(4), 334-340, DOI 10.2478/s13386-013-0111-z.
Ganzawa, Y., Watanabe, Y., Osanai, F., Hashimoto, T., 1997. TL color images from quartzes of loess and tephra in China and Japan, Radiat. Meas. 27, 383-388.