Japan Geoscience Union Meeting 2016

Presentation information


Symbol S (Solid Earth Sciences) » S-TT Technology & Techniques

[S-TT53] Contribution of luminescence dating to geosciences

Sun. May 22, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Saiko Sugisaki(Geological Survey of Japan, AIST), Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST), Reisuke Kondo(Educational Development Center, Kogakkan University), Kazumi Ito(Geological Survey of Japan, AIST)

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

*Aiko Shimada1, Masashi Takada2, Shin Toyoda3, Kiyotaka Ninagawa3 (1.JEOL RESONANCE Inc., 2.Nara Women's University, 3.Okayama University of Science)

Keywords:thermoluminescence, Electron Spin Resonance, sediments provenance, quartz, river bed sediments

ESR, TL and OSL signals have been used for the dating of samples in Quaternary [1], [2], [3]. Recently another direction has been tried, using the ESR and TL signals as indicators of sediment provenance. The ESR signal intensity of quartz is shown to be a useful parameter to investigate the provenance of aeolian dust [4], [5]. The ESR signal intensities of quartz have been shown to be useful to distinguish the sediment provenance [6]. Quartz has been reported to show red and blue TL by the differences in origin [7].
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.
[1] Ikeya, M., 1993. New Applications of Electron Spin Resonance, Dating, Dosimetry, and Microscopy. World Scientific, Singapore. 500p.
[2] Aitken, M. J., 1985. Thermoluminescence dating, Acad. Press. Lon. 359 p.
[3] Aitken, M. J., 1998. An introduction to optical dating. Oxford Sci. Pub. 267 p.
[4]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.
[5]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.
[6]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.
[7]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.