抄録
In many cases, plant remains excavated from archaeological sites have been preserved in the ethanol solution to prevent growth of fungus and decay. Comparative experiments were conducted for examining the presence or absence of effect by ethanol solution for the radiocarbon age of the plant remains. Fossil seeds from the Okinoshima site (ca. 9700 cal BP) which preserved in the ethanol solution during 3 years and dried one, and fossil reefs from the Kouzeki site (ca. 3rd Century AD) which preserved in ethanol solution during 16 years and dried one, were dated. The result of radiocarbon dates coincided in the standard deviations respectively.
