Updated on 2025/10/09

写真a

 
KURIHARA Toshiyuki
 
Organization
Academic Assembly Institute of Science and Technology CHIKYU SEIBUTSU KAGAKU KEIRETU Professor
Graduate School of Science and Technology Environmental Science and Technology Professor
Faculty of Science Department of Science Professor
Title
Professor
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Degree

  • 理学 ( 2002.3   筑波大学 )

  • 理学 ( 1999.3   筑波大学 )

  • 理学 ( 1997.3   筑波大学 )

Research Areas

  • Natural Science / Biogeosciences

Research History (researchmap)

  • Niigata University   Graduate School of Science and Technology Environmental Science and Technology   Associate Professor

    2010.12

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  • Niigata University   Faculty of Science Department of Geology   Associate Professor

    2010.12

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  • Niigata University   Graduate School of Science and Technology Environmental Science and Technology   Assistant Professor

    2010.4 - 2010.11

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  • Niigata University   Graduate School of Science and Technology Fundamental Sciences   Assistant Professor

    2009.2 - 2010.3

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Research History

  • Niigata University   Department of Science, Faculty of Science   Professor

    2024.4

  • Niigata University   Environmental Science and Technology, Graduate School of Science and Technology   Professor

    2024.4

  • Niigata University   Institute of Science and Technology, Academic Assembly   Professor

    2024.4

  • Niigata University   Graduate School of Science and Technology Environmental Science and Technology   Associate Professor

    2010.12 - 2024.3

  • Niigata University   Faculty of Science Department of Geology   Associate Professor

    2010.12 - 2017.3

  • Niigata University   Graduate School of Science and Technology Environmental Science and Technology   Assistant Professor

    2010.4 - 2010.11

  • Niigata University   Graduate School of Science and Technology Fundamental Sciences   Assistant Professor

    2009.2 - 2010.3

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Papers

  • Detrital Zircons From Lower Palaeozoic Metamorphic Complexes and Silurian–Devonian Strata in the South Kitakami Belt, Northeast Japan: Implications for the Northern Extension of the Terra Australis Orogen in Northeast Gondwana Reviewed

    Keisuke Suzuki, Toshiyuki Kurihara, Hidetoshi Hara, Kenichi Ishikawa, Takeru Otsuki, Hayato Ueda

    Geological Journal   1 - 23   2024.9

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    <jats:title>ABSTRACT</jats:title><jats:p>To reconstruct the detailed location of proto‐Japan around northeastern Gondwana during the early Palaeozoic, this article presents detrital zircon U–Pb age spectra for lower Palaeozoic metamorphic complexes and Silurian–Devonian strata from the western margin of the South Kitakami belt in northeast Japan. Psammitic and siliceous schists have youngest age peaks ranging from the Ordovician (479–458 Ma) to early Silurian (ca. 439 Ma). Sandstones have youngest age peaks varying from the early Silurian (ca. 435 Ma) to Late Devonian (370–360 Ma). The U–Pb age spectra exhibit major peaks at 510–500, 480–470, and 450–440 Ma. Excluding the Upper Devonian sandstones, significant age peaks occur at 650–550 and 1300–900 Ma. These data can be interpreted as a Pacific Gondwana signature, indicating a tectonic association with the Terra Australis Orogen that developed along the northeastern Gondwanan margin and Paleo‐Pacific Ocean, extending from eastern Australia (i.e., the Thomson, Lachlan, and Delamerian orogens) to Antarctica (i.e., the Ross Orogen). In northeast Asia, the Pacific Gondwana detrital zircons and 480–470 Ma zircons occur in the Bainaimiao arc belt along the northern margin of the North China Craton and in the Jiangyu continental arc in the Jilin area. The magmatic arcs of proto‐Japan and these regions were part of the Terra Australis Orogen during the Ordovician–early Silurian. A decrease in the proportion of Pacific Gondwana detrital zircons in Upper Devonian strata may be due to multistage trench retreat, such as that recognized in the Tasmanides in eastern Australia, which corresponds to the northern Terra Australis Orogen.</jats:p>

    DOI: 10.1002/gj.5052

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  • Record of the Indosinian Orogeny provided by conglomerates and detrital zircon U–Pb ages from the western Indochina Block, central Thailand

    Hidetoshi Hara, Thasinee Charoentitirat, Tetsuya Tokiwa, Toshiyuki Kurihara, Keisuke Suzuki, Apsorn Sardsud

    Gondwana Research   2023.11

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.gr.2023.11.009

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  • Guadalupian–Lopingian (Middle–Late Permian) radiolarians from clastic rocks and zircon U–Pb ages of intercalated tuff and tuffaceous sandstone on Sado Island, central Japan

    Toshiyuki Kurihara, Keisuke Suzuki, Tsuyoshi Ito, Hirotaka Ishida, Hayato Ueda, Atsushi Matsuoka

    Revue de Micropaléontologie   100750 - 100750   2023.10

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    DOI: 10.1016/j.revmic.2023.100750

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  • Detrital zircon U–Pb ages and geochemistry of Devonian–Carboniferous sandstones and volcanic rocks of the Hida Gaien belt, Southwest Japan: Provenance reveals a Gondwanan lineage for the early Paleozoic tectonic evolution of proto-Japan

    Keisuke Suzuki, Toshiyuki Kurihara, Teruki Sato, Hayato Ueda, Toshiro Takahashi, Simon A. Wilde, M. Satish-Kumar

    Gondwana Research   115   224 - 255   2023.3

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    DOI: 10.1016/j.gr.2022.12.005

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  • Occurrence report of Triassic and Jurassic radiolarians from the Jurassic accretionary complexes of the Ashio belt in eastern Mt. Narukami, Ashio Mountains, central Japan

    Tsuyoshi ITO, Kazuya NAKAMURA, Tatsuya HINOHARA, Toshiyuki KURIHARA

    BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN   72 ( 4 )   345 - 358   2021.10

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    Publishing type:Research paper (scientific journal)   Publisher:National Institute of Advanced Industrial Science  

    DOI: 10.9795/bullgsj.72.345

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  • Geochemistry and Sr-Nd isotopic composition of meta-gabbros from the Omi serpentinite melange, Niigata, SW Japan: Evidence for subduction erosion in an immature early Paleozoic arc-trench system in proto-Japan

    M. Satish-Kumar, T. Kurihara, R. Shishido, T. Yoshida, T. Takahashi, R. Nohara-Imanaka

    LITHOS   398   2021.10

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    DOI: 10.1016/j.lithos.2021.106260

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  • U-Pb ages and sandstone provenance of the Permian volcano-sedimentary sequence of the Hida Gaien belt, Southwest Japan: Implications for Permian sedimentation and tectonics in Northeast Asia

    Keisuke Suzuki, Toshiyuki Kurihara

    JOURNAL OF ASIAN EARTH SCIENCES   219   2021.10

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    DOI: 10.1016/j.jseaes.2021.104888

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  • Revisiting the tectonic evolution of the Triassic Palaeo-Tethys convergence zone in northern Thailand inferred from detrital zircon U–Pb ages Reviewed

    Hidetoshi Hara, Tetsuya Tokiwa, Toshiyuki Kurihara, Thasinee Charoentitirat, Apsorn Sardsud

    Geological Magazine   158 ( 5 )   1 - 25   2020.9

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    DOI: 10.1017/s0016756820001028

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  • A morphological analysis of the flat-shaped spumellarian radiolarian Dictyocoryne: morpho-functional insights into planktonic mode of life Reviewed

    Yuta Shiino, Toshiyuki Kurihara, Ryo Ichinohe, Naoko Kishimoto, Takashi Yoshino, Atsushi Matsuoka

    PALEONTOLOGICAL RESEARCH   24 ( 2 )   134 - 146   2020.4

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    DOI: 10.2517/2019PR020

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  • Preface: The 15th Meeting of the International Association of Radiolarists (InterRad XV), 20 October-1 November, 2017, Niigata, Japan (Part 2) Reviewed

    Atsushi Matsuoka, Toshiyuki Kurihara, Yoshihito Kamata, Atsushi Takemura

    PALEONTOLOGICAL RESEARCH   24 ( 2 )   87 - 88   2020.4

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  • Active floating with buoyancy of pseudopodia versus passive floating by hydrodynamic drag force: A case study of the flat-shaped spumellarian radiolarian Dictyocoryne Reviewed

    Ryo Ichinohe, Yuta Shiino, Toshiyuki Kurihara, Naoko Kishimoto

    PALEONTOLOGICAL RESEARCH   23 ( 4 )   236 - 244   2019.10

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    DOI: 10.2517/2018PR023

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  • Preface: The 15th Meeting of the International Association of Radiolarists (InterRad XV), 20 October-1 November, 2017, Niigata, Japan Reviewed

    Atsushi Matsuoka, Toshiyuki Kurihara, Yoshihito Kamata, Atsushi Takemura

    PALEONTOLOGICAL RESEARCH   23 ( 4 )   235 - 235   2019.10

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  • Chitinozoans and scolecodonts from the Silurian and Devonian of Japan Reviewed

    Thijs R. A. Vandenbroucke, Olle Hints, Mark Williams, Simon Wallis, Jules Velleman, Toshiyuki Kurihara, Gengo Tanaka, Toshifumi Komatsu, Peep Mannik, David J. Siveter, Tim de Backer

    ISLAND ARC   28 ( 3 )   2019.5

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    DOI: 10.1111/iar.12294

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  • Detrital zircon U-Pb ages from clastic rocks of the Hida Gaien Belt in the Hongo area, Takayama City, Gifu Prefecture, central Japan, and their geological significance

    Keisuke Suzuki, Toshiyuki Kurihara, Hayato Ueda

    The Journal of the Geological Society of Japan   125 ( 4 )   307 - 322   2019.4

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    Publishing type:Research paper (scientific journal)   Publisher:The Geological Society of Japan  

    DOI: 10.5575/geosoc.2018.0071

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  • Permian-Triassic back-arc basin development in response to Paleo-Tethys subduction, Sa Kaeo-Chanthaburi area in Southeastern Thailand Reviewed

    Hidetoshi Hara, Tetsuya Tokiwa, Toshiyuki Kurihara, Thasinee Charoentitirat, Auranan Ngamnithiporn, Krai Visetnat, Kohei Tominaga, Yoshihito Kamata, Katsumi Ueno

    GONDWANA RESEARCH   64   50 - 66   2018.12

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    DOI: 10.1016/j.gr.2018.06.007

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  • The passive spatial behaviour and feeding model of living nassellarian radiolarians: Morpho-functional insights into radiolarian adaptation Reviewed

    Ryo Ichinohe, Yuta Shiino, Toshiyuki Kurihara

    MARINE MICROPALEONTOLOGY   140   95 - 103   2018.4

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    DOI: 10.1016/j.marmicro.2018.02.002

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  • Permian arc evolution associated with Panthalassa subduction along the eastern margin of the South China block, based on sandstone provenance and U-Pb detrital zircon ages of the Kurosegawa belt, Southwest Japan Reviewed

    Hidetoshi Hara, Miho Hirano, Toshiyuki Kurihara, Toshiro Takahashi, Hayato Ueda

    JOURNAL OF ASIAN EARTH SCIENCES   151   112 - 130   2018.1

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    DOI: 10.1016/j.jseaes.2017.10.025

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  • Detrital zircon multi-chronology, provenance, and low-grade metamorphism of the Cretaceous Shimanto accretionary complex, eastern Shikoku, Southwest Japan: Tectonic evolution in response to igneous activity within a subduction zone Reviewed

    Hidetoshi Hara, Yoshihiro Nakamura, Kousuke Hara, Toshiyuki Kurihara, Hiroshi Mori, Hideki Iwano, Tohru Danhara, Shuhei Sakata, Takafumi Hirata

    ISLAND ARC   26 ( 6 )   2017.11

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    DOI: 10.1111/iar.12218

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  • Sandstone provenance and U-Pb ages of detrital zircons from Permian-Triassic forearc sediments within the Sukhothai Arc, northern Thailand: Record of volcanic-arc evolution in response to Paleo-Tethys subduction Reviewed

    Hidetoshi Hara, Miyuki Kunii, Yoshihiro Miyake, Ken-ichiro Hisada, Yoshihito Kamata, Katsumi Ueno, Yoshiaki Kon, Toshiyuki Kurihara, Hayato Ueda, San Assavapatchara, Anuwat Treerotchananon, Thasinee Charoentitirat, Punya Charusiri

    JOURNAL OF ASIAN EARTH SCIENCES   146   30 - 55   2017.9

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    DOI: 10.1016/j.jseaes.2017.04.021

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  • RADIOLARIAN AGE AND LITHOSTRATIGRAPHY OF LATE CRETACEOUS PELAGIC SEDIMENTS OVERLYING BASALTIC EXTRUSIVE ROCKS, NORTHERN OMAN MOUNTAINS Reviewed

    Kousuke Hara, Toshiyuki Kurihara

    OFIOLITI   42 ( 1 )   21 - 38   2017

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    DOI: 10.4454/ofioliti.v42i2.446

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  • Polyhedron geometry of skeletons of Mesozoic radiolarian Pantanellium Reviewed

    Takashi Yoshino, Atsushi Matsuoka, Toshiyuki Kurihara, Naoto Ishida, Naoko Kishimoto, Katsunori Kimoto, Shu Matsuura

    Revue de Micropaleontologie   58 ( 1 )   51 - 56   2015.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier Masson SAS  

    DOI: 10.1016/j.revmic.2015.01.002

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  • Three-dimensional imaging of the Jurassic radiolarian Protunuma ? ochiensis Matsuoka: an experimental study using high-resolution X-ray micro-computed tomography Reviewed

    Naoto ISHIDA, Naoko KISHIMOTO, Atsushi MATSUOKA, Katsunori KIMOTO, Toshiyuki KURIHARA, Takashi YOSHINO

    Volumina Jurassica   13 ( 1 )   77 - 82   2015

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  • Late Cenomanian radiolarians from pelagic sediments on the V2 lava in the Wadi Hilti area of the Oman Ophiolite

    Agui Yumi, Hara Kousuke, Kurihara Toshiyuki

    Annual Meeting of the Geological Society of Japan   2015   470 - 470   2015

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    Publisher:The Geological Society of Japan  

    DOI: 10.14863/geosocabst.2015.0_470

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  • Pores in Spherical Radiolarian Skeletons Directly Determined from Three-Dimensional Data Reviewed

    Naoto ISHIDA, Naoko KISHIMOTO, Atsushi MATSUOKA, Katsunori KIMOTO, Toshiyuki KURIHARA, Takashi YOSHINO

    FORMA   29   21 - 27   2014.7

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    DOI: 10.5047/forma.2014.004

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  • U-Pb zircon age from the radiolarian-bearing Hitoegane Formation in the Hida Gaien Belt, Japan Reviewed

    Manchuk Nuramkhaan, Toshiyuki Kurihara, Kazuhiro Tsukada, Yoshikazu Kochi, Hokuto Obara, Tatsuya Fujimoto, Yuji Orihashi, Koshi Yamamoto

    ISLAND ARC   22 ( 4 )   494 - 507   2013.12

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    DOI: 10.1111/iar.12044

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  • Provenance and origins of a Late Paleozoic accretionary complex within the Khangai-Khentei belt in the Central Asian Orogenic Belt, central Mongolia Reviewed

    Hidetoshi Hara, Toshiyuki Kurihara, Kazuhiro Tsukada, Yoshiaki Kon, Takayuki Uchino, Toshiya Suzuki, Makoto Takeuchi, Yuki Nakane, Manchuk Nuramkhaan, Minjin Chuluun

    JOURNAL OF ASIAN EARTH SCIENCES   75   141 - 157   2013.10

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    DOI: 10.1016/j.jseaes.2013.07.019

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  • Geological setting of basaltic rocks in an accretionary complex, Khangai-Khentei Belt, Mongolia Reviewed

    Kazuhiro Tsukada, Yuki Nakane, Koshi Yamamoto, Toshiyuki Kurihara, Shigeru Otoh, Kenji Kashiwagi, Minjin Chuluun, Sersmaa Gonchigdorj, Manchuk Nuramkhaan, Masakazu Niwa, Tetsuya Tokiwa

    ISLAND ARC   22 ( 2 )   227 - 241   2013.6

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    DOI: 10.1111/iar.12028

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  • Tectono-stratigraphy and low-grade metamorphism of Late Permian and Early Jurassic accretionary complexes within the Kurosegawa belt, Southwest Japan: Implications for mechanisms of crustal displacement within active continental margin Reviewed

    Hidetoshi Hara, Toshiyuki Kurihara, Hiroshi Mori

    TECTONOPHYSICS   592   80 - 93   2013.4

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    DOI: 10.1016/j.tecto.2013.02.006

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  • Unconformity between a Late Miocene-Pliocene accretionary prism (Nishizaki Formation) and Pliocene trench-slope sediments (Kagamigaura Formation), central Japan Reviewed

    Yuzuru Yamamoto, Shun Chiyonobu, Toshiyuki Kurihara, Asuka Yamaguchi, Shoko Hina, Mari Hamahashi, Hugues Raimbourg, Romain Augier, Leslie Gadenne

    ISLAND ARC   21 ( 4 )   231 - 234   2012.12

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    DOI: 10.1111/j.1440-1738.2012.00820.x

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  • Application of Voronoi Tessellation of Spherical Surface to Geometrical Models of Skeleton Forms of Spherical Radiolaria Reviewed

    Takashi Yoshino, Atsushi MATSUOKA, Toshiyuki KURIHARA, Naoto ISHIDA, Naoko KISHIMOTO, Katsunori KIMOTO, Shu MATSUURA

    Forma   27   45 - 53   2012.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Society for Science on Form  

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  • Petrography and geochemistry of clastic rocks within the Inthanon zone, northern Thailand: Implications for Paleo-Tethys subduction and convergence Reviewed

    Hidetoshi Hara, Miyuki Kunii, Ken-ichiro Hisada, Katsumi Ueno, Yoshihito Kamata, Weerapan Srichan, Punya Charusiri, Thasinee Charoentitirat, Megumi Watarai, Yoshiko Adachi, Toshiyuki Kurihara

    JOURNAL OF ASIAN EARTH SCIENCES   61   2 - 15   2012.11

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    DOI: 10.1016/j.jseaes.2012.06.012

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  • Exact number of pore frames and their configuration in the Mesozoic radiolarian Pantanellium: An application of X-ray micro-CT and layered manufacturing technology to micropaleontology Reviewed

    Atsushi Matsuoka, Takashi Yoshino, Naoko Kishimoto, Naoto Ishida, Toshiyuki Kurihara, Katsunori Kimoto, Shu Matsuura

    MARINE MICROPALEONTOLOGY   88-89   36 - 40   2012.5

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    DOI: 10.1016/j.marmicro.2012.02.005

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  • Permian Peri-glacial Deposits from Central Mongolia in Central Asian Orogenic Belt: A Possible Indicator of the Capitanian Cooling Event Reviewed

    Tatsuya Fujimoto, Shigeru Otoh, Yuji Orihashi, Takafumi Hirata, Takaomi D. Yokoyama, Masanori Shimojo, Yoshikazu Kouchi, Hokuto Obara, Yasuo Ishizaki, Kazuhiro Tsukada, Toshiyuki Kurihara, Manchuk Nuramkhan, Sersmaa Gonchigdorj

    RESOURCE GEOLOGY   62 ( 4 )   408 - 422   2012

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    DOI: 10.1111/j.1751-3928.2012.00204.x

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  • Cretaceous radiolarians from the Shimanto accretionary complex in the Kitagawa district, Tokushima Prefecture, Southwest Japan

    Hara Hidetoshi, Hara Kousuke, Kurihara Toshiyuki

    Bull. Geol. Surv. Japan   63 ( 11 )   301 - 308   2012

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    Language:Japanese   Publisher:National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan  

    Cretaceous radiolarians were recovered from three mudstone samples within the Shimanto accretionary complex in the Kitagawa district, Tokushima Prefecture, Southwest Japan. Two of them, red mudstone and gray mudstone, in the Osodani Unit yield radiolarian faunas indicating the ages of late Albian to Cenomanian and late Cenomanian, respectively. Black mudstone within the Taniyama Unit includes a representative radiolarian fauna presenting a Turonian age. Based on the age determination by our present data together with the radiolarian evidences reported from surrounding area, the accretionary age of the Osodani Unit is constrained to be Turonian to early Coniacian, and those of the Taniyama Unit is reinterpreted as the age of Turonian to Santonian. New findings of radiolarian fossils in the Kitagawa district help establish the age constraint for the Cretaceous Shimanto accretionary complex in eastern Shikoku.

    DOI: 10.9795/bullgsj.63.301

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    Other Link: https://jlc.jst.go.jp/DN/JALC/10016326285?from=CiNii

  • Inaniguttid radiolarians from the Nakahata Formation in the Yokokurayama area of the Kurosegawa terrane

    Kurihara Toshiyuki, Endo Ryoma

    Annual Meeting of the Geological Society of Japan   2012   519 - 519   2012

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    Publisher:The Geological Society of Japan  

    DOI: 10.14863/geosocabst.2012.0_519

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  • Application of Micro-CT technique to Jurassic radiolarian fossils

    Ishida Naoto, Kishimoto Naoko, Matsuoka Atsushi, Kurihara Toshiyuki, Kimoto Katsunori, Yoshino Takashi, Matsuura Shu

    Annual Meeting of the Geological Society of Japan   2012   122 - 122   2012

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    DOI: 10.14863/geosocabst.2012.0_122

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  • Direct age determination for an Upper Permian accretionary complex (Kirinai Formation), Kitakami Mountains, Northeast Japan Reviewed

    Satoshi Nakae, Toshiyuki Kurihara

    Palaeoworld   20 ( 2-3 )   146 - 157   2011.8

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    DOI: 10.1016/j.palwor.2010.12.003

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  • Direct observation of the skeletal growth patterns of polycystine radiolarians using a fluorescent marker Reviewed

    Kaoru Ogane, Akihiro Tuji, Noritoshi Suzuki, Atsushi Matsuoka, Toshiyuki Kurihara, Rie S. Hori

    MARINE MICROPALEONTOLOGY   77 ( 3-4 )   137 - 144   2010.12

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    DOI: 10.1016/j.marmicro.2010.08.005

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  • Geological and geochemical aspects of a Devonian siliceous succession in northern Thailand: Implications for the opening of the Paleo-Tethys Reviewed

    Hidetoshi Hara, Toshiyuki Kurihara, Junichiro Kuroda, Yoshiko Adachi, Hiroshi Kurita, Koji Wakita, Ken-ichiro Hisada, Punya Charusiri, Thasinee Charoentitirat, Pol Chaodumrong

    PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY   297 ( 2 )   452 - 464   2010.11

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    DOI: 10.1016/j.palaeo.2010.08.029

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  • A Simple Mathematical Model for Chamber Arrangement of Planktic Foraminifera

    Takashi Yoshino, Katsunori Kimoto, Naoko Kishimoto, Atsushi Matsuoka, Toshiyuki Kurihara, Naoto Ishida, Syu Matsuura

    Forma   24 ( 3 )   87 - 92   2010.5

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  • Tectonic evolution of low-grade metamorphosed rocks of the Cretaceous Shimanto accretionary complex, Central Japan Reviewed

    Hidetoshi Hara, Toshiyuki Kurihara

    TECTONOPHYSICS   485 ( 1-4 )   52 - 61   2010.4

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    DOI: 10.1016/j.tecto.2009.11.017

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  • Sporogenesis of an extracellular cell chain from the spheroidal radiolarian host Haliommilla capillaceum (Haeckel), Polycystina, Protista Reviewed

    Noritoshi Suzuki, Toshiyuki Kurihara, Atsushi Matsuoka

    MARINE MICROPALEONTOLOGY   72 ( 3-4 )   157 - 164   2009.9

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    DOI: 10.1016/j.marmicro.2009.04.007

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  • Upper Silurian and Devonian pelagic deep-water radiolarian chert from the Khangai-Khentei belt of Central Mongolia: Evidence for Middle Paleozoic subduction-accretion activity in the Central Asian Orogenic Belt Reviewed

    Toshiyuki Kurihara, Kazuhiro Tsukada, Shigeru Otoh, Kenji Kashiwagi, Minjin Chuluun, Dorjsuren Byambadash, Bujinlkham Boijir, Sersmaa Gonchigdorj, Manchuk Nuramkhan, Masakazu Niwa, Tetsuya Tokiwa, Gen'ya Hikichi, Takafumi Kozuka

    JOURNAL OF ASIAN EARTH SCIENCES   34 ( 2 )   209 - 225   2009.2

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  • First application of PDMPO to examine silicification in polycystine radiolaria

    Kaoru Ogane, Akihiro Tuji, Noritoshi Suzuki, Toshiyuki Kurihara, Atsushi Matsuoka

    Plankton and Benthos Research   4 ( 3 )   89 - 94   2009

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    DOI: 10.3800/pbr.4.89

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  • Space structure design inspired by morphology of marine plankton

    Naoko Kishimoto, Takashi Yoshino, Katsunori Kimoto, Atsushi Matsuoka, Toshiyuki Kurihara, Shu Matsu'uura

    Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference   2009

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    DOI: 10.2514/6.2009-2142

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  • Radiolaria-dated Lower Permian clastic-rock sequence in the Fukuji area of the Hida-gaien terrane, central Japan, and its inter-terrane correlation across Southwest Japan Reviewed

    Toshiyuki Kurihara, Masao Kametaka

    ISLAND ARC   17 ( 4 )   531 - 545   2008.12

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    DOI: 10.1111/j.1440-1738.2008.00632.x

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  • Oligocene radiolarians from the Shimanto accretionary complex in the Murasho district, central Kyushu, Southwest Japan

    Kurihara Toshiyuki, Hara Hidetoshi

    Journal of the Geological Society of Japan   114 ( 2 )   92 - 95   2008.2

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    An Oligocene radiolarian fauna was recovered from silty mudstone within the Hyuga Group of the Shimanto accretionary complex in the Murasho district, central Kyushu, Southwest Japan. The fauna includes Artophormis gracilis, Lophocyrtis aspera group, Theocyrtis aff. setanios, and Theocorys bianulus. The radiolaria-dated Oligocene unit occupies the structurally lowest position in the imbricate stacks of the Hyuga Group. Previous workers reported middle Eocene to probably early Oligocene microfossils from structurally upper units, and thus these together imply the presence of the younging polarity toward a structurally lower unit.

    DOI: 10.5575/geosoc.114.92

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    Other Link: http://hdl.handle.net/10191/26523

  • Uppermost silurian to lower devonian radiolarians from the hitoegane area of the hida-gaien terrane, central Japan Reviewed

    Toshiyuki Kurihara

    MICROPALEONTOLOGY   53 ( 3 )   221 - 237   2007

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    DOI: 10.2113/gsmicropal.53.3.221

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  • O-134 Radiolarian assemblages from the Gorhi Formation in the Hangai-Hentii zone, central Mongolia and geologic ages of radiolarian cherts Reviewed

    Kurihara T., Tokiwa T., Hikichi G., Kozuka T., Tsukada T., Otoh S., Kashiwagi K., Minjin Ch., Sersmaa G., Dorjsuren B., Bujinlkham B., Niwa M.

    Annual Meeting of the Geological Society of Japan   2006 ( 0 )   110 - 110   2006

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    DOI: 10.14863/geosocabst.2006.0_110_1

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  • O-135 Geochemical feature of basalt from the Gorkhi Formation, Hangai : Hentei belt, central Mongolia Reviewed

    Tsukada K., Kozuka T., Minjin C., Sersmaa G., Dorjsuren B., Boijir B., Kurihara T., Asahara Y., Niwa K., Tokiwa T., Niwa M., Otho S., Kashiwagi K., Hikiji G.

    Annual Meeting of the Geological Society of Japan   2006 ( 0 )   110 - 110   2006

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    DOI: 10.14863/geosocabst.2006.0_110_2

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  • O-136 Sinistral tectonic belt along the southern margin of the Khangai-Khentii zone, central Mongolia

    Otoh Shigeru, Kozuka Takafumi, Kurihara Toshiyuki, Tsukada Kazuhiro, Minjin Ch., Sersmaa G., Dorjsuren B., Bujinlkham B.

    Annual Meeting of the Geological Society of Japan   2006   111 - 111   2006

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    DOI: 10.14863/geosocabst.2006.0_111_1

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  • Early Carboniferous radiolarians discovered from the Hayachine Terrane, Northeast Japan : the oldest fossil age for clastic rocks of accretionary complex in Japan

    Uchino Takayuki, Kurihara Toshiyuki, Kawamura Makoto

    Journal of the Geological Society of Japan   111 ( 4 )   249 - 252   2005.4

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    Early Carboniferous radiolarians were newly discovered from siltstone of the Nedamo Complex in the Hayachine Terrane, Northeast Japan. This siltstone and other clastic rocks along with greenstone and chert are the components of an accretionary complex. Radiolarian fauna contains Palaeoscenidium cladophorum Deflandre that ranges in age from Early or Middle Devonian to Early Carboniferous. Since the Fe-Mn chert intercalated in a MORB-type basalt of the Nedamo Complex was assigned an age of Late Devonian (Hamano et al., 2002), the accretionary age of the Hayachine Terrane is no older than Late Devonian, most probable Early Carboniferous. This is the first report of an Early Carboniferous accretionary complex recognized by biostratigraphic data in Japan.

    DOI: 10.5575/geosoc.111.249

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    Other Link: http://hdl.handle.net/10191/26525

  • Devonian radiolarians from red chert in the Hentey Mounteins, central Mongolia and its tectonic significance : toward reconstruction of an oceanic plate stratigraphy of the "Paleo-Pacific Ocean" Reviewed

    KURIHARA Toshiyuki, TSUKADA Kazuhiro, KASHIWAGI Kenji, MINJIN Chuluun, BYAMBADASH Dorjsuren, NIWA Masakazu, TOKIWA Tetsuya

    Annual Meeting of the Geological Society of Japan   2005 ( 0 )   133 - 133   2005

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    DOI: 10.14863/geosocabst.2005.0_133_2

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  • Silurian and Devonian radiolarian biostratigraphy of the Hida Gaien belt, central Japan(<Special Issue>Recent progress and future perspective of research on the Hida Gaien belt)

    Kurihara Toshiyuki

    Journal of the Geological Society of Japan   110 ( 10 )   620 - 639   2004.10

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    Silurian and Devonian radiolarian biostratigraphy was studied for tuffaceous clastic rocks developed in the Fukuji - Hitoegane and Kuzuryu Lake - Upper Ise River areas of the Hida Gaien belt, central Japan. The objective of the study was to improve chronostratigraphic calibration of these intervals and to discuss local correlation among the Middle Paleozoic strata in Japan. Radiolarian zones characterized by eight distinctive assemblages have been ・defined in the seven measured sections, as follows: Haplotaeniatum tegimentum - Syntagen-tactinia excelsa (middle to upper Llandovery), Fusalfanus osobudaniensis - Secuicollacta itoigawai (lower Ludlow). Zadrappolus spinosus - Praespongocoelia parva (lower or middle Ludlow), Stylosphaera (?) magnaspina (upper Ludlow), Pseudospongoprunum (?) tauversi (lower to middle Pridoli), Futobari solidus - Zadrappolus tenuis (lower or middle Pridoli to Lower Devonian), Palaeoscenidium ishigai - Deflantrica furutanii (Lochkovian or Pragian to lower Emsian), and Pactarentinia intermedia - Pactarentinia igoi (lower Emsian) Assemblage Zones. Age control is based on the stratigraphic relationship between the zones, other fossils, and correlation with other radiolarian zones established in the southern Urals, west Texas, and the Kurosegawa belt, Southwest Japan. Biostratigraphic correlations clearly show that Ludlow to Emsian tuffaceous clastic rocks of deep-water origin in the Hida Gaien belt are exceedingly similar to those in the Kurosegawa and South Kitakami belts in depositional age. It provides a constraining link between these terranes during the early evolutionary stage of their geologic history.

    DOI: 10.5575/geosoc.110.620

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    Other Link: http://hdl.handle.net/10191/26546

  • O-49 Correlation among the Silurian and Devonian strata in the Hida-gaien, Kurosegawa, and South Kitakami terranes based on radiolarian biostratigraphy

    KURIHARA Toshiyuki

    Annual Meeting of the Geological Society of Japan   2004   50 - 50   2004

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    DOI: 10.14863/geosocabst.2004.abst.0_50_1

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  • Stratigraphy and geologic age of the Middle Paleozoic strata in the Kuzuryu Lake-Upper Ise River area of the Hida-gaien Terrane, central Japan

    Kurihara Toshiyuki

    Journal of the Geological Society of Japan   109 ( 8 )   425 - 441   2003.8

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    Middle Paleozoic tuffaceous clastic and carbonate rocks are well developed in the Kuzuryu Lake-Upper Ise River area of the Hida-gaien Terrane in central Japan and are lithologically subdivided into the Kagero, Shibasudani, and Kamianama formations. The Kagero Formation consists mainly of tuffaceous sandstone and tuffaceous shale, which sometimes alternate, and differs from the other Paleozoic formations by having well-stratified tuffaceous rocks and an overall abundance of calcareous grains. The Shibasudani Formation is subdivided into three parts. The lower and upper parts consist mainly of sandstone and shale, with alternating sandstone and shale containing siliceous shale intercalations. The middle part of this formation is characterized by limestone blocks that are inferred to be exotic inclusions. The Kamianama Formation, which is correlative with the Lower Devonian Fukuji Formation, consists of limestone, felsic tuff, and sandstone. Radiolarians clearly indicate that the Kagero and Shibasudani formations are early Early Silurian and Late Silurian to Early Devonian in age, respectively. Terrane-wide correlations clearly show that the Middle Paleozoic strata of the Kuzuryu Lake-Upper Ise River area strongly resemble those of the Fukuji-Hitoegane area in age, lithology, and assemblage of lithologic units, and just as strongly differ from strata in the Hongo-Arakigawa and Naradani areas. Both Lower Devonian shallow-marine carbonates and deep-water tuffaceous elastics are present in the study area. Their occurrence together implies the presence of a diverse sedimentary system in a differentiated Middle Paleozoic basin.

    DOI: 10.5575/geosoc.109.425

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    Other Link: http://hdl.handle.net/10191/26548

  • O-111 Lithostratigraphic subdivision and radiolarian age of the Lower to Middle Paleozoic strata of the Hitoegane-Fukuji area in the Hida-gaien Terrane

    KURIHARA Toshiyuki

    Annual Meeting of the Geological Society of Japan   2002   54 - 54   2002

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    DOI: 10.14863/geosocabst.2002.0_54_2

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  • O-224 Geologic structures in the deeper part of the Southern Uplands accretionary prism, Scotland

    Ogawa Yujiro, Shinozaki Ryo, Kurihara Toshiyuki, Than Tin Aung

    Annual Meeting of the Geological Society of Japan   2001   112 - 112   2001

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    DOI: 10.14863/geosocabst.2001.0_112_1

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  • Stratigraphy and geologic age of the Middle Paleozoic strata of the Ise area in the Hida Gaien Belt, central Japan

    KURIHARA Toshiyuki

    Annual Meeting of the Geological Society of Japan   1999   164 - 164   1999

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    DOI: 10.14863/geosocabst.1999.0_164_2

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  • Early Triassic radiolarian faunas from the chert sequence of the Unazawa Formation, southern Chichibu Terrane, Kanto Mountains, central Japan

    Sashida K., Hori N., Kurihara T.

    Annual Meeting of the Geological Society of Japan   1999   44 - 44   1999

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    DOI: 10.14863/geosocabst.1999.0_44_2

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  • Occurrence and significance of the Late Silurian and Early to Middle Devonian radiolarians from the Kuzuryu Lake district of the Hida Gaien Belt,Fukui Prefecture,central Japan

    Kurihara Toshiyuki, Sashida Katsuo

    Journal of the Geological Society of Japan   104 ( 12 )   845 - 860   1998.12

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    DOI: 10.5575/geosoc.104.845

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    Other Link: http://hdl.handle.net/10191/26506

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  • ジオパーク : 大学から地域へ、そして世界へ

    松岡, 篤, 栗原, 敏之, 新潟大学大学院自然科学研究科ブックレット新潟大学編集委員会

    新潟日報事業社  2013  ( ISBN:9784861325281

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Research Projects

  • Probing into the Proto-Japan from the Indochina Block in Cambodia

    Grant number:24KK0079

    2024.9 - 2029.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Fund for the Promotion of Joint International Research (International Collaborative Research)

    Awarding organization:Japan Society for the Promotion of Science

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    Grant amount:\16380000 ( Direct Cost: \12600000 、 Indirect Cost:\3780000 )

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  • 中・古生代放散虫生層序とU-Pb年代の統合:年代尺度としての確立と応用

    Grant number:17K05690

    2017.4 - 2020.3

    System name:科学研究費助成事業 基盤研究(C)

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    栗原 敏之, 植田 勇人, 松岡 篤

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    本課題では,放散虫化石帯にジルコンのU-Pb年代を挿入し,他の生層序帯や地質現象を統一的な時間軸上に配列できる年代尺度として確立することを目的として研究を行っている.平成30年度は,交付申請書の実施計画に則り,次の検討を行った.(1)飛騨外縁帯・黒瀬川帯・南部北上帯の上部シルル系~下部デボン系放散虫化石帯における主要な生層準の年代の検討.(2)飛騨外縁帯・黒瀬川帯・舞鶴帯のペルム紀放散虫化石産出層における年代の検討.(3)ジュラ紀・白亜紀放散虫化石産出層における年代の検討.
    (1)では,特に黒瀬川帯の鴻ノ森地域・横倉山地域における上部シルル系~下部デボン系にて既存の放散虫化石帯を詳細に再検討し,重要な生層準を新たに認定するとともに,複数層準の凝灰岩からジルコンの抽出を進めた.(2)では,特に佐渡島に分布する舞鶴帯舞鶴層群相当層において,ペルム紀の放散虫化石産出層を新たに見出し,随伴する複数の砂岩層においてジルコンのU-Pb年代を測定した.個々のジルコン粒子の組織や形状の評価とともにピーク分離等の統計学的手法を用い,信頼度の高い堆積年代値として約268~255 Maの年代値を得ることができた.これにより中期ペルム紀Capitanianの放散虫化石帯に年代値を導入できる見通しが得られた.(3)では,前期白亜紀の放散虫化石が産出する富良野地域の蝦夷層群において研究分担者(植田勇人)とともに地質調査を行い,地質の把握,放散虫生層序の再検討および凝灰岩のジルコンU-Pb年代の測定を進めた.また,ジュラ紀-前期白亜紀境界付近については,福島県南相馬地域に分布する相馬中村層群にて研究分担者(松岡 篤)とともに地質調査を行い,放散虫の重要な生層準の確認と凝灰岩からのジルコンの抽出を進めた.

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  • Radiolarian evolution inferred from form and function

    Grant number:15K05329

    2015.4 - 2018.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    Matsuoka Atsushi, KURIHARA Toshiyuki, YOSHINO Takashi, KISHIMOTO Naoko, ITO Tsuyoshi, OHKOUCHI Haruka, LI Xin

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

    Cretaceous closed Nassellarian genus Turbocapsula exhibits an evolutionary lineage, showing phylogenetic changes in skeletal morphology, which was clarified by our research in southern Tibet, China. Two species within recent Nassellarian genus Eucyrtidium show a variation in pore arrangement, which is a family-level difference in radiolarian taxonomy.
    The 15th International radiolarian meeting was held in Niigata in 2017. This meeting contributed not only to scientific field but also to outreach activities using enlarged models of radiolarian skeletons produced by macro-CT technique and 3D printing methods.

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  • Depth distribution of extinct radiolarians estimated from the comparison between fossil assemblages from shallow and deep-water sediments and morphological convergence

    Grant number:26400499

    2014.4 - 2017.3

    System name:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    Kurihara Toshiyuki, NODA Atsushi, HARA Hidetoshi, HARA Kousuke

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    Grant amount:\2600000 ( Direct Cost: \2000000 、 Indirect Cost:\600000 )

    The comparative research for Late Cretaceous radiolarian faunas within shallow-marine and deep-water sediments of Japan (Izumi and Yezo groups) and Oman (Suhaylah and Zabyat formations) was conducted to distinguish the depth distribution of each species from fossil assemblages. As a result, it confirmed that large discoidal spumellarians occur abundantly the shallow-marine sediments. Characteristic faunal compositions were also observed corresponding to the development of peculiar water mass structures. In addition, the fossil species considered to be a surface dweller has the same morphological features as recent shallow-water species. It implies that these common characteristics are attributed to a morphological convergence as an adaptive strategy for the shallow-marine environment. These findings indicate that it is possible to distinguish the depth distribution of radiolarians from the fossil assemblage.

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  • Evolution of Permian island arc in the Kurosegawa Belt based on petrology of clastics

    Grant number:26400495

    2014.4 - 2017.3

    System name:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    Hara Hidetoshi, HIRANO Miho, UEDA Hayato, TAKAHASHI Toshiro, IMANAKA Rikako

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    Grant amount:\2600000 ( Direct Cost: \2000000 、 Indirect Cost:\600000 )

    We have studied the petrography, geochemistry, and detrital zircon U-Pb ages of sandstones from shallow-marine forearc sediments, and accretionary complexes (ACs) within the Kurosegawa belt of Southwest Japan. The provenance, source rock compositions, and U-Pb ages for the sediments and accretionary complexes have allowed us to reconstruct the geological history of the Permian arc and forearc regions of the Kurosegawa belt. During the Middle Permian, the ACs were accreted along the eastern margin of the South China block. The Middle Permian arc was an immature oceanic island arc consisting of andesitic to felsic volcanic rocks. During the Late Permian, the ACs formed in a mature arc, producing voluminous felsic volcanic rocks. A forearc basin developed during the late Middle to Late Permian. These rocks formed in a forearc region of a Permian island arc associated with the subduction of Panthalassa oceanic crust along the eastern margin of the South China block.

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  • Radiolarian extinction event in the Middle Paleozoic

    Grant number:23740376

    2011 - 2012

    System name:Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Research category:Grant-in-Aid for Young Scientists (B)

    Awarding organization:Japan Society for the Promotion of Science

    KURIHARA Toshiyuki

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    Grant amount:\3770000 ( Direct Cost: \2900000 、 Indirect Cost:\870000 )

    Radiolarian faunal transition and geochemistry of Upper Silurian to Middle Devonian siliceous rocks in Japan and Mongolia were investigated to understand a possible mass extinction event in Early Devonian time. The result of the present study indicates the following faunal transition process: (1) the decline and subsequent extinction of Inaniguttidae occurred in the middle Early Devonian, (2) Palaeoscenidiidae that is a typical opportunistic group occupied a late Early Devonian radiolarian fauna, and (3) subsequent diversification of Entactiniidae became pronounced in the Middle Devonian. Based on the results of geochemical analysis of chert, there is a possibility that this extinction event has a causal relationship with Early Devonian environmental change attributed to a large igneous activity.

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  • Multi-scale approach for structural design : from evolution of marine plankton with shell to design of space structures

    Grant number:21200053

    2009 - 2011

    System name:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research a proposed research project)

    Research category:Grant-in-Aid for Scientific Research on Innovative Areas (Research a proposed research project)

    Awarding organization:Japan Society for the Promotion of Science

    KISHIMOTO Naoko, YOSHINO Takashi, KIMOTO Katsunori, KURIHARA Toshiyuki, ISHIDA Naoto, MATSUOKA Atsushi, MATSUURA Shu, MEGURO Akira, NATORI Michihiro, OGAWA Toru

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    Grant amount:\17680000 ( Direct Cost: \13600000 、 Indirect Cost:\4080000 )

    We proposed investigation of geometrical and mechanical properties of Foraminifera and Radiolarian skeletons in order to clarify what is an optimal structure under micro gravity condition. Results are summarized in the following three points: 1) Using micro X-ray computer tomography, we can obtain three dimensional information with sufficient resolution of both fossils and recent Foraminifera and Radiolarian skeleton. 2) We propose mathematical models of chamber arrangement of Foraminifera, and evaluate the proposed model in contrast with three dimensional information obtained by micro X-ray CT. 3) The observation of enlarged plaster models based on three dimensional information provides some geometrical characteristics of Radiolarian skeletons. Also we carried out FEM analysis using voxel finite element models.

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  • Was there the "Mongol-Okhotsk Ocean?"-On tectonic evolution of Eurasian Continent-

    Grant number:20403013

    2008 - 2011

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    TSUKADA Kazuhiro, ADACHI Mamoru, YOSHIDA Hidekazu, OTOH Shigeru, KURIHARA Toshiyuki, KASHIWAGI Kenji

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    Grant amount:\16770000 ( Direct Cost: \12900000 、 Indirect Cost:\3870000 )

    It have been considered that the rocks of the eastern part of the Khangai. Khentei belt, Mongolia were composed of Devonian or possibly Carboniferous accretionary complexes including radiolarian chert and Carboniferous shallow marine sedimentary rocks(Tomurtogoo, 2003), but we revealed that the Carboniferous formation is mostly a part of the accretionary complexes. In addition, the following three shear zones are recognized in the eastern part of the Khangai. Khentei belt.(1) The rocks of the northern part of this belt are intensely sheared with asymmetric structures showing a top-to the North sense of shear. The tectonic foliation is generally sub-horizontal and is cut by syn-tectonic plutonic rock dated between 434 and 462 Ma. Added to this, a granitic clast of 277 Ma is included in a sheared rock of the Haraa terrane. These facts suggest that the rocks of the area were sheared twice :(a) at pre-Silurian, and(b) at least after Early Permian.(2) A shear zone trending NE with asymmetric structures showing a dextral sense of shear is developed in the northern part of the belt.(3) The sheared rocks of the southern part of the belt which trend NE with steep dipping have asymmetric structures indicating a sinistral sense of shear. These sheared rocks are intruded by syn-tectonic granitic rocks dated between 314 and 278 Ma. This shear zone cuts across the shear zone(2) and is disturbed by the shear zone(1b).

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  • Middle Paleozoic geologic evolution of the western Panthalassa margin solved by the Kurosegawa terrane

    Grant number:19740311

    2007 - 2008

    System name:Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Research category:Grant-in-Aid for Young Scientists (B)

    Awarding organization:Japan Society for the Promotion of Science

    KURIHARA Toshiyuki

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    Grant amount:\1350000 ( Direct Cost: \1200000 、 Indirect Cost:\150000 )

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  • 東アジアの前期〜中期古生代珪質微化石生層序帯の構築と古生代地質体の起源

    Grant number:03J02087

    2003 - 2005

    System name:科学研究費助成事業 特別研究員奨励費

    Research category:特別研究員奨励費

    Awarding organization:日本学術振興会

    栗原 敏之

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    Grant amount:\3300000 ( Direct Cost: \3300000 )

    本研究は日本列島の古生代構造帯およびこれらと地質学的に連続する東アジアの地質体を対象として,(1)オルドビス紀〜デボン紀の放散虫を主とする珪質微化石の高分解能生層序帯の構築,(2)同時代性が確立された地層間における地質現象と群集構成の比較,を行い,東アジア古生代地質体の相互関係とその起源の解明を目的とするものである.
    本年度は,日本列島の古生代構造帯に地質学的に連続するモンゴルのシルル系〜デボン系について,放散虫生層序に基づく年代決定と広域対比を目的に,基礎的な地質データの収集と化石抽出を行った.また,平成15・16年度に引き続き,国内の研究地域(南部北上帯いわき地域,熊本県の黒瀬川帯,京都府福知山地域の舞鶴帯)についても調査を継続した.
    モンゴルのシルル系〜デボン系については,20日間の野外地質調査を行った.平成16年度の野外地質調査によって,このシルル系〜デボン系が付加体であることが認定されたが,本年度はさらに広域的な調査と微化石による年代決定により,その詳細な層序と地質構造,付加年代および日本の古生界との関係も含めた古地理的な位置付けが明らかになった.その成果は国際学会(IGCP516)にて発表された.また,モンゴルから産出したシルル紀〜デボン紀の放散虫化石群集についての年代論,他地域の群集との比較などをまとめた研究結果について,2006年3月にニュージーランドで開催された国際放散虫研究集会Interrad XIにて発表を行った.

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  • 飛騨外縁帯古生界の層序およびオルドビス紀〜デボン紀放散虫の分類・化石層序

    Grant number:01J09575

    2001 - 2002

    System name:科学研究費助成事業 特別研究員奨励費

    Research category:特別研究員奨励費

    Awarding organization:日本学術振興会

    栗原 敏之

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    Grant amount:\2000000 ( Direct Cost: \2000000 )

    本研究は,西南日本内帯の飛騨外縁帯を対象として,(1)オルドビス紀〜デボン紀放散虫化石層序の確立とその高精度化,(2)古生界の層序の確立,(3)形成過程の解明,(4)オルドビス紀〜デボン紀放散虫の系統分類,を目的とするものである.前年度は(1),(2)および(4)に関する基礎的なデータを収集したので,今年度はこれらを基に化石層序の高精度化と飛騨外縁帯の形成過程を考察し,その一部の内容について論文を執筆した.
    化石層序の高精度化については,前年の検討で福地-一重ヶ根地域と伊勢地域のシルル・デボン系において幾つかの放散虫群集を識別していたが,これらの群集を基に最下部シルル系H.tegimentum-S.excelsa群集帯から下部デボン系P.intermedia-P.igoi群集帯まで9つに分帯した.この成果についてIPC-2002(2002年7月シドニー)にて公表した.
    また,飛騨外縁帯の形成過程について,前年の検討で主要5地域の層序を把握したが,その構成要素が最も典型的に見られる地域として西部の伊勢地域を取り上げ考察した.これを日本地質学会学会誌に投稿した(飛騨外縁帯九頭竜湖-伊勢川上流地域における中部古生界の層序と地質年代).同論文では,放散虫化石による詳細な時代検討を行い,同時代の浅海域の炭酸塩岩と深海域の低密度流堆積物が普遍的に存在していることを明らかにした.これらは同時異相関係で,その堆積場は未成熟な海洋性島弧縁辺と推定される.同論文で扱ったのはシルル〜デボン系であるが,こうした現象は古生界全体に見られるものである.飛騨外縁帯は非常に複雑な地質構造を持った地質体であるため,これまでその形成史は明らかになっていない.しかし,本研究によって,分化した堆積盆で形成された様々な岩相の構成層が精造運動を経て接することにより現在のような複雑な地質体が形成された可能性があることが初めて示された.

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Teaching Experience

  • 地学実験B

    2024
    Institution name:新潟大学

  • 野外実習B

    2024
    Institution name:新潟大学

  • 地球科学特別講義I

    2024
    Institution name:新潟大学

  • 応用地質学実習

    2024
    Institution name:新潟大学

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    2023
    Institution name:新潟大学

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    2023
    Institution name:新潟大学

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    2023
    Institution name:新潟大学

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    2023
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  • 卒業論文II

    2023
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  • 地球環境科学特論

    2023
    Institution name:新潟大学

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    2023
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    2023
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    2022
    Institution name:新潟大学

  • 地質フィールド実習

    2022
    -
    2023
    Institution name:新潟大学

  • Earth Science todayII

    2022
    Institution name:新潟大学

  • 地質調査法実習II

    2021
    Institution name:新潟大学

  • 古生物地理論

    2021
    Institution name:新潟大学

  • 地質調査法II

    2021
    Institution name:新潟大学

  • 海洋生物学実験

    2021
    Institution name:新潟大学

  • 古生物学B

    2021
    Institution name:新潟大学

  • 古生物学実験

    2021
    Institution name:新潟大学

  • 古生物学A

    2021
    Institution name:新潟大学

  • 卒業論文

    2021
    -
    2023
    Institution name:新潟大学

  • 論文講読演習

    2021
    -
    2023
    Institution name:新潟大学

  • 古無脊椎動物学実験

    2021
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  • 理学スタディ・スキルズ

    2021
    Institution name:新潟大学

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    2021
    Institution name:新潟大学

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    2020
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    2020
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    2020
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    2020
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    2018
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  • 古生物学B

    2018
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  • 地質学入門b

    2017
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  • 地学基礎実習a

    2017
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  • 専門力アクティブ・ラーニング

    2017
    -
    2021
    Institution name:新潟大学

  • 理学スタディ・スキルズ

    2017
    -
    2021
    Institution name:新潟大学

  • フィールド体験実習

    2017
    Institution name:新潟大学

  • 地学基礎実習b

    2017
    Institution name:新潟大学

  • 地史学A

    2016
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  • 古生物学実験

    2012
    -
    2018
    Institution name:新潟大学

  • 地学実験C

    2012
    -
    2016
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  • 課題研究(地質科学科)

    2012
    -
    2016
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  • 地球科学特定研究Mb

    2012
    -
    2015
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  • 地球科学演習Mb

    2012
    -
    2015
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  • 中間発表M

    2012
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    2015
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  • 学術発表演習M

    2012
    -
    2014
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  • 地球科学特定研究Ma

    2012
    -
    2014
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  • 地球科学演習Ma

    2012
    -
    2014
    Institution name:新潟大学

  • 東アジアの地質形成史

    2012
    -
    2013
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  • 地学英語

    2012
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  • リサーチキャンプ

    2012
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    2012
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    2011
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    2011
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    2011
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    2011
    -
    2023
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  • 古生物学A

    2011
    -
    2018
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    2011
    -
    2018
    Institution name:新潟大学

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    2011
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    2017
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    2015
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    2011
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    2011
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  • 東アジアの地質

    2010
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  • 古無脊椎動物学実験

    2010
    -
    2021
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  • 地史学原理

    2010
    -
    2017
    Institution name:新潟大学

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    2010
    -
    2014
    Institution name:新潟大学

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    2010
    -
    2011
    Institution name:新潟大学

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    2010
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    2011
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    2009
    Institution name:新潟大学

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    2009
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    2021
    Institution name:新潟大学

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    2009
    -
    2018
    Institution name:新潟大学

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    2009
    -
    2018
    Institution name:新潟大学

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    2009
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    2018
    Institution name:新潟大学

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    2009
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    2011
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