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Yuguchi, Takashi; Iwano, Hideki*; Danhara, Toru*; Hirata, Takafumi*; Sueoka, Shigeru; Hattori, Kentaro*; Sakata, Shuhei*; Ishibashi, Masayuki; Kunimaru, Takanori; Nishiyama, Tadao*
no journal, ,
no abstracts in English
Sueoka, Shigeru; Yamada, Kunimi*; Shibata, Kenji; Tsutsumi, Hiroyuki*; Tagami, Takahiro*; Hasebe, Noriko*; Tamura, Akihiro*; Arai, Shoji*
no journal, ,
We are attempting to reveal uplift and denudation history of the Yoro-Suzuka-Nunobiki Mountains, eastern margin of the Kinki Triangle, by using apatite fission-track and (U-Th)/He thermochronology. In the eastern margin of the Kinki Triangle, subsiding areas have moved to the north in the past few million years. On the other hand, our the thermochronological data indicate more denudation in the central and southern parts of the Suzuka Range than in the Nunobiki Mountains to the south in the past few million years. This observation can imply basin development and orogenesis of the study area are derived from different mechanisms.
Sueoka, Shigeru; Yasue, Kenichi; Niwa, Masakazu; Hanamuro, Takahiro; Shimada, Koji; Ishimaru, Tsuneari; Umeda, Koji; Danhara, Toru*; Iwano, Hideki*; Gozu, Chitaro*
no journal, ,
Seven major granitic plutons are distributed around the Lake Biwa. On the basis of their lithofacies, chemical compositions, and radiometric ages, four of the seven plutons to the south of the Lake Biwa are thought to be related to a huge cauldron formed at ca 70 Ma, while the Otsukimiyama pluton to the east and Hiei pluton to the west are derived from volcanic front of ca 100 Ma. On the other hand, the geologic implications of the Kojaku pluton to the north have not been discussed due to luck of the radiometric ages. We are planning to report zircon fission-track age, biotite K-Ar age, and zircon U-Pb age of the Kojaku pluton, to estimate its formation age and cooling history, and to discuss their geological implications.
Sasao, Eiji; Ishibashi, Masayuki
no journal, ,
no abstracts in English
Kuboshima, Koji
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no abstracts in English
Yokota, Hideharu; Tanaka, Shingo; Motoshima, Takayuki*
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no abstracts in English
Umeda, Koji; Yasue, Kenichi; Niwa, Masakazu; Ishimaru, Tsuneari; Shimada, Koji
no journal, ,
no abstracts in English
Yasue, Kenichi; Shimada, Koji; Sasaki, Akimichi; Tanaka, Yukumo; Niwa, Masakazu; Ishimaru, Tsuneari; Umeda, Koji; Tateishi, Ryo*; Kosaka, Hideki*
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no abstracts in English
Kokubu, Yoko; Yasue, Kenichi; Niwa, Masakazu; Matsubara, Akihiro; Umeda, Koji; Ishimaru, Tsuneari; Shimada, Koji
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no abstracts in English
Niwa, Masakazu; Shimada, Koji; Yasue, Kenichi; Ishimaru, Tsuneari; Umeda, Koji
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no abstracts in English
Ishimaru, Tsuneari; Shimada, Koji; Niwa, Masakazu; Yasue, Kenichi; Tateishi, Ryo*; Ikeda, Makinori; Umeda, Koji
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no abstracts in English
Abe, Hironobu; Niizato, Tadafumi; Watanabe, Takayoshi; Takeuchi, Ryuji; Yasue, Kenichi
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no abstracts in English
Ishii, Eiichi
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no abstracts in English
Niizato, Tadafumi; Aoki, Isao; Asazuma, Shinichiro
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This paper presents current status on the JAEA's study of the dynamic behavior of radiocaesium in the Fukushima environment and technical know-how on the decontamination work.
Niizato, Tadafumi; Abe, Hironobu; Watanabe, Takayoshi; Yasue, Kenichi; Sato, Haruo
no journal, ,
This paper presents the status on the research of the dynamic behavior of radiocaesium in the Fukushima forest.
Niizato, Tadafumi; Oyama, Takuya; Funaki, Hironori
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This paper presents the outline and status of a research project on the long-term assessment of transport of radioactive contaminant in the environment of Fukushima (F-TRACE project).
Kametaka, Masao*; Nakayama, Kazuhiko; Aoki, Kazuhiro; Seshimo, Kazuyoshi; Shimada, Koji; Tanaka, Yoshihiro; Okazaki, Kazuhiko*; Funato, Akio*; Hayashi, Toshio*
no journal, ,
no abstracts in English