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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
Published for geochemistry community from Geochemical Society of Japan.

Apparent penetration of fallout 137Cs into rocks in Izu-Oshima

Kan Kimura, Yuko Saito, Mariko Sabanai, Yoshimitsu Hirao, Jun Sato, Kazuo Sato
Geochemical Journal, Vol. 17, No. 6, P. 303-305, 1983


The distribution of 137Cs in volcanic rocks was measured for sliced samples of solid lava blocks from Izu-Oshima island, Japan. The decrease in 137Cs concentration with the increase in depth, together with the uneven spatial distribution, suggested that the fallout was responsible for the occurrence of 137Cs and that 137Cs might have penetrated into lavas as deep as several centimeters.

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