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Ayumi S. Okamoto

Hokkaido University

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Publication

Featured researches published by Ayumi S. Okamoto.

Island Arc | 2015

Fission track and U–Pb zircon ages of psammitic rocks from the Harushinai unit, Kamuikotan metamorphic rocks, central Hokkaido, Japan: constraints on metamorphic histories

Ayumi S. Okamoto; Toru Takeshita; Hideki Iwano; Tohru Danhara; Takafumi Hirata; Hirotsugu Nishido; Shuhei Sakata

Journal of the Geological Society of Japan | 2018

Tectonics in the Kamuikotan belt:: from the Cretaceous subduction channel to forearc basin sediments

Toru Takeshita; Takao Hirajima; Hayato Ueda; Ayumi S. Okamoto; Shusuke Kinoshita; Wonji Shin; Ryusei Kota; Mizuho Ando; Takahito Nakayama

Japan Geoscience Union | 2016

Frictional properties of mafic metamorphic gouges: Implication for slow earthquakes along the Nankai Trough

Ayumi S. Okamoto; André R. Niemeijer; Christopher J. Spiers; Toru Takeshita

Japan Geoscience Union | 2016

Structural development in cataclasite zones associated with faulting: an example of the Median Tectonic Line

Shun Arai; Toru Takeshita; Ayumi S. Okamoto

Japan Geoscience Union | 2016

Appraisal of the tectonics of the Kamuikotan metamorphic rocks around the Asahikawa City, central Hokkaido: Zircon U-Pb ages and contact metamorphism by fluid migration

Wonji Shin; Toru Takeshita; Ayumi S. Okamoto

Japan Geoscience Union | 2015

Rheology in subduction channel inferred from P-T paths in tectonic blocks from serpentinite melange

Ayumi S. Okamoto; Toru Takeshita

Annual Meeting of the Geological Society of Japan The 122nd Annual Meeting(2015' Nagano) | 2015

Frictional properties of actinolite-chlorite aggregate in mafic metamorphic rocks

Ayumi S. Okamoto; André R. Niemeijer; Christopher J. Spiers; Toru Takeshita; Nobuo Gouchi

Japan Geoscience Union | 2014

To what degree can rocks become weak during deformation?: Fracturing-dissolution-mass transfer-precipitation creep

Toru Takeshita; Ayumi S. Okamoto

Japan Geoscience Union | 2014

Fission track and U-Pb zircon ages of psammitic rocks from the Harushinai unit of the Kamuikotan belt, Hokkaido

Ayumi S. Okamoto; Toru Takeshita; Hideki Iwano; Tohru Danhara; Takafumi Hirata; Hirotsugu Nishido

Annual Meeting of the Geological Society of Japan The 120th Annual Meeting(2013' Sendai) | 2013

Metamorphic pressure and temperature paths recorded in amphibolite blocks distributed in the Horokanai area, Hokkaido and their implications

Ayumi S. Okamoto; Toru Takeshita; Nobuo Gouchi

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Collaboration

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Toru Takeshita

Hokkaido University

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Hideki Iwano

National Institute of Advanced Industrial Science and Technology

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Takafumi Hirata

University of Tokyo

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Takahito Nakayama

Hokkaido University

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Tohru Danhara

University of Tsukuba

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Hirotsugu Nishido

Okayama University of Science

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Wonji Shin

Hokkaido University

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André R. Niemeijer

Utrecht University

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Christopher J. Spiers

Utrecht University

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Hayato Ueda

Niigata University

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