Thursday, 8 September 2005

This presentation is part of: Poster Session II

Decipher of dates on the archaeological site in the Russian Far East - Research of marine reservoir effect by comparing charcoal and charcoal remains on the surface of pottery -

Dai Kunikita1, Kunio Yoshida2, Yumiko Miyazaki2, Keita Saito2, Hiroyuki Matsuzaki3, Shinji Ito4, Tatsuo Kobayashi4, Tsuyoshi Fujimoto4, A. M. Kuznetsov5, A. A. Krupyanko5, and A. M. Tabarev6. (1) Graduate School of Frontier Science, The University of Tokyo, 3-1 Hongo 7-chome Bunkyo-ku, Tokyo, 113-0033, Japan, (2) The University Museum, The University of Tokyo, 3-1 Hongou 7-chome Bunkyo-ku, Tokyo, 113-0033, Japan, (3) Department of Nuclear Engineering and Managemant, School of Engineering, The University of Tokyo, Tokyo, Japan, (4) Kokugakuin University, Tokyo, 150-8440, Japan, (5) Far Eastern National University, Vladivostok, Russia, (6) Institute of Archaeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

In the Russian Far East, the relation between dating samples and artifacts is ambiguous by thin occupational layers and variability and complexity of mixed artifacts. Therefore, charcoal remains on the surface of pottery are used for dating as an effective sample. But problems sometimes have been reported, that is, the radiocarbon ages are older or younger up to several centuries than ages expected by the information of artifacts, and the origin is not still adequately resolved. In case of charcoal remains on the surface of pottery, it is necessary to collect and measure the associated charcoal and environmental soils. There are four conditions to decide the radiocarbon chronologies in these circumstances as follows: (1) select or collection of suitable samples (2) comprehensive research by various radiocarbon samples (3) detailed positional information of measured samples (4) many radiocarbon dates in each site In this study, radiocarbon ages of charcoal and charcoal remains on the surface of pottery from Ustinovka-8 site (assigned from the Early Neolithic period to the Bronze period) were measured at the AMS facility, the University of Tokyo. Many dates for the cultural complexes already have been published in this region [1]. However, most of the samples were measured by radiocarbon dating for charcoal associated with artifacts, and the time scale was decided by few radiocarbon dates in each site. On the other hand, research of marine reservoir effects in the Russian Far East has been developing in recent years [2] [3]. In order to get the accurate and precise radiocarbon chronologies for this area, we will discuss possibility of marine reservoir effect estimated by comparison between charcoal and charcoal remains on the surface of pottery.

[1] Y. V. Kuzmin, Journal of East Asian Archaeology, vol.3, #3-4 (2002). [2] M. Yoneda et al., Radiocarbon, vol.43, 465-471 (2001) [3] Y. V. Kuzmin et al., Radiocarbon, vol.43, 477-481 (2001)


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