JOPSS - Search Results

Oral presentation

Spatial distribution of zircon U-Pb ages in the Toki granite, Central Japan; Relationship of intrusion, emplacement and the subsequent cooling processes

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

Oral presentation

Uplift and denudation history of the Yoro-Suzuka-Nunobiki Mountains, southwest Japan, based on low-temperature thermochronology and tectonics of the eastern margin of the Kinki Triangle

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.

Oral presentation

Cooling history of the Kojaku granite pluton constrained from multi-system thermochronology and its geologic implications

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.

Oral presentation

Long-term history of geological environment at the Mizunami Underground Research Laboratory from the perspective of formative process of fractures

Sasao, Eiji; Ishibashi, Masayuki

no journal, ,

no abstracts in English

Oral presentation

Process of fault growth in the Mizunami Underground Research Laboratory site area; Investigation from texture and mineral component of fault rocks

Kuboshima, Koji

no journal, ,

no abstracts in English

Oral presentation

A Study on hydraulic heterogeneity based on results from hydraulic and tracer tests for a fracture in the sedimentary rock

Yokota, Hideharu; Tanaka, Shingo; Motoshima, Takayuki*

no journal, ,

no abstracts in English

Oral presentation

K-Ar ages of the Kojaku granite and dolerite dyke in the eastern San'in Belt, southwest Japan

Umeda, Koji; Yasue, Kenichi; Niwa, Masakazu; Ishimaru, Tsuneari; Shimada, Koji

no journal, ,

no abstracts in English

Oral presentation

Fluvial Terraces Chronology in northern Tsuruga Peninsula, southwest Japan

Yasue, Kenichi; Shimada, Koji; Sasaki, Akimichi; Tanaka, Yukumo; Niwa, Masakazu; Ishimaru, Tsuneari; Umeda, Koji; Tateishi, Ryo*; Kosaka, Hideki*

no journal, ,

no abstracts in English

Oral presentation

Radiocarbon measurement of JAEA-AMS-TONO at the Tono geosciences center and its application of investigation for fault

Kokubu, Yoko; Yasue, Kenichi; Niwa, Masakazu; Matsubara, Akihiro; Umeda, Koji; Ishimaru, Tsuneari; Shimada, Koji

no journal, ,

no abstracts in English

Oral presentation

Fault gouges and clay veins developed in granite

Niwa, Masakazu; Shimada, Koji; Yasue, Kenichi; Ishimaru, Tsuneari; Umeda, Koji

no journal, ,

no abstracts in English

Oral presentation

Summary of the additional geological surveys of crush zones at the fast breeder prototype reactor Monju site

Ishimaru, Tsuneari; Shimada, Koji; Niwa, Masakazu; Yasue, Kenichi; Tateishi, Ryo*; Ikeda, Makinori; Umeda, Koji

no journal, ,

no abstracts in English

Oral presentation

Forest investigation; Monitoring of surface runoff and downward movement of soil (soil loss)

Abe, Hironobu; Niizato, Tadafumi; Watanabe, Takayoshi; Takeuchi, Ryuji; Yasue, Kenichi

no journal, ,

no abstracts in English

Oral presentation

Estimation and prediction of permeability of faults in mudstones

Ishii, Eiichi

no journal, ,

no abstracts in English

Oral presentation

Technical know-how on the decontamination work taking into consideration of the transport behavior of radiocaesium accompanied with transport and deposition of soil particles, and stream flow

Niizato, Tadafumi; Aoki, Isao; Asazuma, Shinichiro

no journal, ,

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.

Oral presentation

Transport and depositional behavior of radiocaesium released by the Fukushima Daiichi Nuclear Power Plant Accident in the Fukushima forest

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.

Oral presentation

Transport and depositional behavior of radiocaesium released from the Fukushima Daiichi Nuclear Power Plant in the Fukushima forest, river, and reservoir

Niizato, Tadafumi; Oyama, Takuya; Funaki, Hironori

no journal, ,

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).

Oral presentation

Mechanical test for the determination of shear sense from experimentally deformed fault gouge samples

Kametaka, Masao*; Nakayama, Kazuhiko; Aoki, Kazuhiro; Seshimo, Kazuyoshi; Shimada, Koji; Tanaka, Yoshihiro; Okazaki, Kazuhiko*; Funato, Akio*; Hayashi, Toshio*

no journal, ,

no abstracts in English

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Spatial distribution of zircon U-Pb ages in the Toki granite, Central Japan; Relationship of intrusion, emplacement and the subsequent cooling processes

Uplift and denudation history of the Yoro-Suzuka-Nunobiki Mountains, southwest Japan, based on low-temperature thermochronology and tectonics of the eastern margin of the Kinki Triangle

Cooling history of the Kojaku granite pluton constrained from multi-system thermochronology and its geologic implications

Long-term history of geological environment at the Mizunami Underground Research Laboratory from the perspective of formative process of fractures

Process of fault growth in the Mizunami Underground Research Laboratory site area; Investigation from texture and mineral component of fault rocks

A Study on hydraulic heterogeneity based on results from hydraulic and tracer tests for a fracture in the sedimentary rock

K-Ar ages of the Kojaku granite and dolerite dyke in the eastern San'in Belt, southwest Japan

Fluvial Terraces Chronology in northern Tsuruga Peninsula, southwest Japan

Radiocarbon measurement of JAEA-AMS-TONO at the Tono geosciences center and its application of investigation for fault

Fault gouges and clay veins developed in granite

Summary of the additional geological surveys of crush zones at the fast breeder prototype reactor Monju site

Forest investigation; Monitoring of surface runoff and downward movement of soil (soil loss)

Estimation and prediction of permeability of faults in mudstones

Technical know-how on the decontamination work taking into consideration of the transport behavior of radiocaesium accompanied with transport and deposition of soil particles, and stream flow

Transport and depositional behavior of radiocaesium released by the Fukushima Daiichi Nuclear Power Plant Accident in the Fukushima forest

Transport and depositional behavior of radiocaesium released from the Fukushima Daiichi Nuclear Power Plant in the Fukushima forest, river, and reservoir

Mechanical test for the determination of shear sense from experimentally deformed fault gouge samples