Abstract
Sedimentological and geochemical studies using radioactive beryllium isotopes in the environment are reviewed. Their measurement methods are also explained. These nuclides have some characteristics such as their production in the atmosphere of the earth and continuous fall-down on the earth surface, usefulness as tracers owing to high affinity on the grain, radioactive clock of chronology for their own half-lives. Therefore, they have many extensive application studies; for example, the dating of surface/bottom sediments, continental/soil erosion, behaviors of sediments in the river/estuarine.
