わが国における放射性廃棄物隔離の地球科学上の問題

抄録

Japan is located on the “Circum-Pacific Arc”, which is a geoscientifically difficult area for selecting sites suitable as repositories for isolating radioactive waste.
The writer has analyzed the problems relevant to radioactive waste isolation in this aqueous and active structural territory, with a view to examining the possibility of finding geological formations suitable for such repositories.
As a result, cirtain parts in Neogene sedimentary rocks and Palaeozoic calcarious rocks were found to present geological characteristics that appeared favorable for radioactive waste isolation, while, on the other hand, the study indicated that much difficulty would be foreseen in crystalline rocks such as are currently suitable in the U.S. and in Europe for high level radioactive waste isolation.