Author:
Ohta Tomoko,Mahara Yasunori,Kubota Takumi,Saito Yu,Fukutani Satoshi,Fujii Toshiyuki,Ando Atsushi,Nakata Eiji,Nakano Takanori,Abe Yoshiro,Tatematsu Akira
Abstract
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.
Publisher
Cambridge University Press (CUP)
Subject
General Earth and Planetary Sciences,Archeology
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