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Oral presentation

Behavior of trace elements in the fault and altered zones of the Toki granite

Arai, Yusuke*; Honda, Teruyuki*; Iwatsuki, Teruki; Nomura, Masao*

no journal, ,

Rare earth elements (REEs) in altered part and fault of Toki granite were analyzed to understand mobility in deep environment. REEs occurs in an oxidized minerals at altered part, in a carbonates and ion exchangeable minerals at fault, respectively. Light REEs tend to be involved in sulphide or phosphorate minerals and heavy REEs seem to be in clay, carbonate minerals. These results imply that the migration of minor actinoides in granite might be retarded by such minerals in fracture and fault.

Oral presentation

Natural analogue study based on chemical composition of the deep boreholes in Horonobe, Hokkaido.

Murakami, Takuma; Mizuno, Takashi

no journal, ,

no abstracts in English

Oral presentation

Status of the research project on the dynamics of radiocaesium in the Fukushima environment; Overview of the F-TRACE Project

Niizato, Tadafumi; Oyama, Takuya; Funaki, Hironori; Kitamura, Akihiro

no journal, ,

This paper presents the research project of JAEA on the transport and depositional behavior of radiocaesium released from the Fukushima Daiichi Nuclear Power Plant in the Fukushima forest, river, and reservoir.