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Radionuclides in Ancient Relics Obtained from the Matsusaki Site and the Hirohata Shellmound on the Pacific Coast of Japan

Published online by Cambridge University Press:  18 July 2016

Tomoko Ohta ,
Yasunori Mahara ,
Takumi Kubota ,
Yu Saito ,
Satoshi Fukutani ,
Toshiyuki Fujii ,
Atsushi Ando ,
Eiji Nakata ,
Takanori Nakano  and
Yoshiro Abe
...Show all authors
Tomoko Ohta*
Affiliation:
Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
Yasunori Mahara
Affiliation:
Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
Takumi Kubota
Affiliation:
Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
Yu Saito
Affiliation:
Research Institute for Humanity and Nature, Honzan, Kamigamo, Kita-ku, Kyoto-shi, Kyoto 603-8047, Japan
Satoshi Fukutani
Affiliation:
Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
Toshiyuki Fujii
Affiliation:
Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
Atsushi Ando
Affiliation:
College of Natural Sciences, Pusan National University, San30 Jangjeon-dong, Geumjeong-gu Busan 609-735, Korea
Eiji Nakata
Affiliation:
Central Research Institute of Electric Power Industry, Abiko-shi, Chiba 270-1194, Japan
Takanori Nakano
Affiliation:
Research Institute for Humanity and Nature, Honzan, Kamigamo, Kita-ku, Kyoto-shi, Kyoto 603-8047, Japan
Yoshiro Abe
Affiliation:
School of arts and letters, Meiji University, Surugadai, Chiyoda-ku, Tokyo 101-8301, Japan
Akira Tatematsu
Affiliation:
Heishu Hosoi Memorial Hall and Tokai City Local History Museum, Arao-cho, Tokai-shi, Aichi 476-0003, Japan
*
Corresponding author. Email: nakano-o@HL.rri.kyoto-u.ac.jp
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Abstract

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We compared 2 archaeological relics of different preservation environments, white substances adhering to a vessel from the Matsusaki site and to earthenware from Hirohata, by measuring their environmental radioactivity, 14C, 228Ra/226Ra, 234U/238U, and 87Sr/86Sr, and major element contents (Ca, Sr, Mg, Fe, and Mn). The results showed that the 2 materials were somewhat different and also reflected differences in their preservation environments. The chemical elements that were more abundant in the Matsusaki sample than in the Hirohata sample, Fe, Mn, 238U, and 232Th (parent of 228Ra), are also abundant in seaweed or seagrass. Contamination by 14C derived from rainwater after atmospheric nuclear tests was clearly observed in the white substance from Hirohata.

Type
Archaeology
Information
Radiocarbon , Volume 52 , Issue 2: 20th Int. Radiocarbon Conference Proceedings , 2010 , pp. 526 - 533
Copyright
Copyright © 2010 by the Arizona Board of Regents on behalf of the University of Arizona 

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