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Iwatsuki, Teruki; Ishii, Eiichi; Mizuno, Takashi; Honda, Teruyuki*
Tokyo Toshi Daigaku Genshiryoku Kenkyusho Kenkyushoho, (36), p.1 - 13, 2010/07
Trace element analysis in deep rock formation of Horonobe area, Hokkaido was conducted to construct the estimation technique on trace element migration. The distribution of trace element in rock formations suggests that those has not migrate in wide area. However those concentration in and around several fault are inhomogenious indicating the faults has a role of migration path. The analysis of trace element concentration is available to estimate the migration path.
Mizuno, Takashi; Nagata, Hiroshi; Iwatsuki, Teruki; Honda, Teruyuki*
Tokyo Toshi Daigaku Genshiryoku Kenkyusho Kenkyushoho, (36), p.14 - 24, 2010/07
This paper aims to understanding the behavior of the elements related to the change of the chemical properties of sedimentary rocks and granitic rocks distributed in the Tono area, Gifu prefecture, using natural analogue approach. As a result, in the sedimentary rocks, it is indicated that REE and U are migrated in response to the change of pH and/or redox condition. These elements will be dissolved from the rocks and introduced into clayminerals, carbonate minerals and phosphate minerals. On the other hand, ingranitic rocks, these elements do not show the systematical variation. It is needed to more detail analysis (ex. chemical analysis of each separated minerals) for understanding their behavior in the granitic rocks.
