Organic Matter in the Asteroid Ryugu: What We Know So Far Invited Reviewed

Christian Potiszil, Masahiro Yamanaka, Chie Sakaguchi, Tsutomu Ota, Hiroshi Kitagawa, Tak Kunihiro, Ryoji Tanaka, Katsura Kobayashi, Eizo Nakamura

Life   13 ( 7 )   2023.6

Detection of Meteoritic Amino Acids in Extremely Small Sample Sizes: Implications for Sample Return Missions

Christian Potiszil, Masahiro Yamanaka, Tsutomu Ota, Ryoji Tanaka, Katsura Kobayashi, Eizo Nakamura

2023.3

Insights into the formation and evolution of extraterrestrial amino acids from the asteroid Ryugu Reviewed

Christian Potiszil, Tsutomu Ota, Masahiro Yamanaka, Chie Sakaguchi, Katsura Kobayashi, Ryoji Tanaka, Tak Kunihiro, Hiroshi Kitagawa, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Eizo Nakamura

Nature Communications   14 ( 1 )   2023.3

Nitrogen Incorporation in Potassic and Micro- and Meso-Porous Minerals: Potential Biogeochemical Records and Targets for Mars Sampling Reviewed

Matthew P. Nikitczuk, Gray E. Bebout, Charles A. Geiger, Tsutomu Ota, Takuya Kunihiro, John F. Mustard, Sæmundur A. Halldórsson, Eizo Nakamura

Astrobiology   22 ( 11 )   1293 - 1309   2022.11

On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective Reviewed

Eizo NAKAMURA, Katsura KOBAYASHI, Ryoji TANAKA, Tak KUNIHIRO, Hiroshi KITAGAWA, Christian POTISZIL, Tsutomu OTA, Chie SAKAGUCHI, Masahiro YAMANAKA, Dilan M. RATNAYAKE, Havishk TRIPATHI, Rahul KUMAR, Maya-Liliana AVRAMESCU, Hidehisa TSUCHIDA, Yusuke YACHI, Hitoshi MIURA, Masanao ABE, Ryota FUKAI, Shizuho FURUYA, Kentaro HATAKEDA, Tasuku HAYASHI, Yuya HITOMI, Kazuya KUMAGAI, Akiko MIYAZAKI, Aiko NAKATO, Masahiro NISHIMURA, Tatsuaki OKADA, Hiromichi SOEJIMA, Seiji SUGITA, Ayako SUZUKI, Tomohiro USUI, Toru YADA, Daiki YAMAMOTO, Kasumi YOGATA, Miwa YOSHITAKE, Masahiko ARAKAWA, Atsushi FUJII, Masahiko HAYAKAWA, Naoyuki HIRATA, Naru HIRATA, Rie HONDA, Chikatoshi HONDA, Satoshi HOSODA, Yu-ichi IIJIMA, Hitoshi IKEDA, Masateru ISHIGURO, Yoshiaki ISHIHARA, Takahiro IWATA, Kosuke KAWAHARA, Shota KIKUCHI, Kohei KITAZATO, Koji MATSUMOTO, Moe MATSUOKA, Tatsuhiro MICHIKAMI, Yuya MIMASU, Akira MIURA, Tomokatsu MOROTA, Satoru NAKAZAWA, Noriyuki NAMIKI, Hirotomo NODA, Rina NOGUCHI, Naoko OGAWA, Kazunori OGAWA, Chisato OKAMOTO, Go ONO, Masanobu OZAKI, Takanao SAIKI, Naoya SAKATANI, Hirotaka SAWADA, Hiroki SENSHU, Yuri SHIMAKI, Kei SHIRAI, Yuto TAKEI, Hiroshi TAKEUCHI, Satoshi TANAKA, Eri TATSUMI, Fuyuto TERUI, Ryudo TSUKIZAKI, Koji WADA, Manabu YAMADA, Tetsuya YAMADA, Yukio YAMAMOTO, Hajime YANO, Yasuhiro YOKOTA, Keisuke YOSHIHARA, Makoto YOSHIKAWA, Kent YOSHIKAWA, Masaki FUJIMOTO, Sei-ichiro WATANABE, Yuichi TSUDA

Proceedings of the Japan Academy, Series B   98 ( 6 )   227 - 282   2022.6

Lithium in garnet as a tracer of subduction zone metamorphic reactions: The record in ultrahigh-pressure metapelites at Lago di Cignana, Italy Reviewed

Gray E. Bebout, Tsutomu Ota, Takuya Kunihiro, William D. Carlson, Eizo Nakamura

Geosphere   18 ( 3 )   1020 - 1029   2022.4

Magmatic-hydrothermal processes of the Laojunshan metamorphic massif in Southeastern Asia: Evidence from chemical and B-isotopic variations of deformed tourmalines Reviewed

Wei Li, Shuyun Cao, Eizo Nakamura, Tsutomu Ota, Zhong Liu, Yanlong Dong, Tak Kunihiro

Lithos   412-413   106609 - 106609   2022.3

The trace element composition of chondrule constituents: Implications for sample return methodologies and the chondrule silicate reservoir Reviewed

Tak Kunihiro, Tsutomu Ota, Masahiro Yamanaka, Christian Potiszil, Eizo Nakamura, Alex, er Krot

Meteoritics & Planetary Science   57 ( 2 )   429 - 449   2022.2

Nitrogenous Altered Volcanic Glasses as Targets for Mars Sample Return: Examples From Antarctica and Iceland Reviewed

M. P. Nikitczuk, G. E. Bebout, T. Ota, T. Kunihiro, J. F. Mustard, R. L. Flemming, R. Tanaka, S. A. Halld{\'{o } }rsson, E. Nakamura

Journal of Geophysical Research: Planets   127 ( 2 )   2022.2

Elements for the Origin of Life on Land: A Deep-Time Perspective from the Pilbara Craton of Western Australia Reviewed

Martin J. Van Kranendonk, Raphael Baumgartner, Tara Djokic, Tsutomu Ota, Luke Steller, Ulf Garbe, Eizo Nakamura

Astrobiology   21 ( 1 )   39 - 59   2021.1

Mineralogical alterations in calcite powder flooded with MgCl2 to study Enhanced Oil Recovery (EOR) mechanisms at pore scale Reviewed

Mona W. Minde, Merete V. Madl, Udo Zimmermann, Nina Egel, Reidar I. Korsnes, Eizo Nakamura, Katsura Kobayashi, Tsutomu Ota

Microporous and Mesoporous Materials   304   109402 - 109402   2020.9

Concentration of meteoritic free organic matter by fluid transport and adsorption Reviewed

C. Potiszil, R. Tanaka, T. Ota, T. Kunihiro, K. Kobayashi, E. Nakamura

Geochemical Perspectives Letters   30 - 35   2020.3

Boron Isotopes in the Puga Geothermal System, India, and Their Implications for the Habitat of Early Life Reviewed

Luke H. Steller, Eizo Nakamura, Tsutomu Ota, Chie Sakaguchi, Mukund Sharma, Martin J. Van Kranendonk

Astrobiology   19 ( 12 )   1459 - 1473   2019.12

Tourmaline in a Mesoarchean pelagic hydrothermal system: Implications for the habitat of early life Reviewed

Ota, T, Aihara, Y, Kiyokawa, S, Tanaka, R, Nakamura, E

Precambrian Research   334   2019.11

Lithium- and oxygen-isotope compositions of chondrule constituents in the Allende meteorite Reviewed

Tak Kunihiro, Tsutomu Ota, Eizo Nakamura

Geochimica et Cosmochimica Acta   252   107 - 125   2019.5

Hypervelocity collision and water-rock interaction in space preserved in the Chelyabinsk ordinary chondrite. Reviewed

Nakamura E, Kunihiro T, Ota T, Sakaguchi C, Tanaka R, Kitagawa H, Kobayashi K, Yamanaka M, Shimaki Y, Bebout GE, Miura H, Yamamoto T, Malkovets V, Grokhovsky V, Koroleva O, Litasov K

Proceedings of the Japan Academy. Series B, Physical and biological sciences   95 ( 4 )   165 - 177   2019

Circa 1 Ga sub-seafloor hydrothermal alteration imprinted on the Horoman peridotite massif Reviewed

Lalindra V. Ranaweera, Tsutomu Ota, Takuya Moriguti, Ryoji Tanaka, Eizo Nakamura

Scientific Reports   DOI:10.1038/s41598-018-28219-x ( 1 )   2018

In–situ U–Pb zircon age dating deciphering the formation event of the omphacite growth over relict edenitic pargasite in omphacite–bearing jadeitite of the Itoigawa–Omi area of the Hida–Gaien belt, central Japan Reviewed

Keitaro KUNUGIZA, Eizo NAKAMURA, Atsushi GOTO, Katsura KOBAYASHI, Tsutomu OTA, Hiroshi MIYAJIMA, Kazumi YOKOYAMA

Journal of Mineralogical and Petrological Sciences   112 ( 5 )   256 - 270   2017

Maruyamaite, K(MgAl₂)(Al₅Mg)Si₆O₁₈(BO₃)₃(OH)₃O, a potassium-dominant tourmaline from the ultrahigh-pressure Kokchetav massif, northern Kazakhstan: Description and crystal structure Reviewed

Aaron Lussier, Neil A. Ball, Frank C. Hawthorne, Darrell J. Henry, Rentaro Shimizu, Yoshihide Ogasawara, Tsutomu Ota

American Mineralogist   101 ( 2 )   355 - 361   2016.2

Supervolcano eruptions driven by melt buoyancy in large silicic magma chambers Reviewed International coauthorship International journal

Wim J. Malfait, Rita Seifert, Sylvain Petitgirard, Jean-Philippe Perrillat, Mohamed Mezouar, Tsutomu Ota, Eizo Nakamura, Philippe Lerch, Carmen Sanchez-Valle

Nature Geoscience   7 ( 2 )   122 - 125   2014.1

Ion microprobe U-Th-Pb geochronology and study of micro-inclusions in zircon from the Himalayan high- and ultrahigh-pressure eclogites, Kaghan Valley of Pakistan Reviewed

Hafiz Ur Rehman, Katsura Kobayash, Tatsuki Tsujimori, Tsutomu Ota, Hiroshi Yamamoto, Eizo Nakamura, Yoshiyuki Kaneko, Tahseenullah Khan, Masaru Terabayashi, Kenta Yoshida, Takao Hirajima

Journal of Asian Earth Sciences   63   179 - 196   2013.2

Sm-Nd and Lu-Hf isotope geochemistry of the Himalayan high- and ultrahigh-pressure eclogites, Kaghan valley, Pakistan Invited Reviewed

Rehman, H.U., Kobayashi, K., Tsujimori, T., Ota, T., Yamamoto, H., Nakamura, E., Kaneko, Y., Khan, T.

Geochemistry - Earth's System Processes   105 - 126   2012

Intra-oceanic island arc origin for Iratsu eclogites of the Sanbagawa belt, central Shikoku, southwest Japan Reviewed

Atsushi Utsunomiya, Bor-ming Jahn, Kazuaki Okamoto, Tsutomu Ota, Hironao Shinjoe

Chemical Geology   280 ( 1-2 )   97 - 114   2011.1

Ophiolites in the Non-volcanic Banda Outer Arc of East Indonesia: Field Occurrence and Petrological Variety of the World's Youngest Ophiolite Reviewed

Akira ISHIKAWA, Yoshiyuki KANEKO, Tsutomu OTA, Yukio ISOZAKI

Journal of Geography (Chigaku Zasshi)   120 ( 1 )   52 - 64   2011

World's youngest blueschist belt from Leti Island in the non-volcanic Banda outer arc of Eastern Indonesia Reviewed

Ade Kadarusman, Shigenori Maruyama, Yoshiyuki Kaneko, Tsutomu Ota, Akira Ishikawa, Jan Sopaheluwakan, Soichi Omori

Gondwana Research   18 ( 1 )   189 - 204   2010.7

Sr-Nd-Hf-Pb isotopic characteristics of North-Western and Southern Ethiopian lithospheric mantle Reviewed

Melesse A, Kunihiro T, Ota T, Tanaka R, Moriguti T, Nakamura E

Geochimica Et Cosmochimica Acta   74 ( 12 )   A697   2010

A geochemical and Sr-Nd isotopic study of the Vendian greenstones from Gorny Altai, southern Siberia: Implications for the tectonic setting of the formation of greenstones and the role of oceanic plateaus in accretionary orogen Reviewed

Utsunomiya, A., Jahn, B.-m., Ota, T., Safonova, I.Yu.

Lithos   113 ( 3-4 )   437 - 453   2009

Are the Taitao granites formed due to subduction of the Chile ridge? Reviewed

Anma, R., Armstrong, R., Orihashi, Y., Ike, S.-i., Shin, K.-C., Kon, Y., Komiya, T., Ota, T., Kagashima, S.-i., Shibuya, T., Yamamoto, S., Veloso, E.E., Fanning, M., Hervé, F.

Lithos   113 ( 1-2 )   246 - 258   2009

Transitional time of oceanic to continental subduction in the Dabie orogen: Constraints from U-Pb, Lu-Hf, Sm-Nd and Ar-Ar multichronometric dating Reviewed

Cheng, H., King, R.L., Nakamura, E., Vervoort, J.D., Zheng, Y.-F., Ota, T., Wu, Y.-B., Kobayashi, K., Zhou, Z.-Y.

Lithos   110 ( 1-4 )   327 - 342   2009

Neoproterozoic basalts of the Paleo-Asian Ocean (Kurai accretionary zone, Gorny Altai, Russia): geochemistry, petrogenesis, and geodynamics Reviewed

Safonova, I.Yu., Simonov, V.A., Buslov, M.M., Ota, T., Maruyama, Sh.

Russian Geology and Geophysics   49 ( 4 )   2008

Preserved paleo-oceanic plateaus in accretionary complexes: Implications for the contributions of the Pacific superplume to global environmental change Reviewed

Utsunomiya, A., Suzuki, N., Ota, T.

Gondwana Research   14 ( 1-2 )   115 - 125   2008

Paleocurrent patterns of the sedimentary sequence of the Taitao ophiolite constrained by anisotropy of magnetic susceptibility and paleomagnetic analyses Reviewed

Eugenio E. Veloso, Ryo Anma, Tsutomu Ota, Tsuyoshi Komiya, Shin-ichi Kagashima, Toshitsugu Yamazaki

Sedimentary Geology   201 ( 3-4 )   446 - 460   2007.10

Progressive metamorphism of the Taitao ophiolite; evidence for axial and off-axis hydrothermal alterations Reviewed

Takazo Shibuya, Tsuyoshi Komiya, Ryo Anma, Tsutomu Ota, Soichi Omori, Yoshiaki Kon, Shinji Yamamoto, Shigenori Maruyama

Lithos   98 ( 1-4 )   233 - 260   2007.10

Geology of the Gorny Altai subduction–accretion complex, southern Siberia: Tectonic evolution of an Ediacaran–Cambrian intra-oceanic arc-trench system Reviewed

Tsutomu Ota, Atsushi Utsunomiya, Yuko Uchio, Yukio Isozaki, Mikhail M. Buslov, Akira Ishikawa, Shigenori Maruyama, Koki Kitajima, Yoshiyuki Kaneko, Hiroshi Yamamoto, Ikuo Katayama

Journal of Asian Earth Sciences   30 ( 5-6 )   666 - 695   2007.7

Multiple generations of forearc mafic–ultramafic rocks in the Timor–Tanimbar ophiolite, eastern Indonesia Reviewed

Akira Ishikawa, Yoshiyuki Kaneko, Ade Kadarusman, Tsutomu Ota

Gondwana Research   11 ( 1-2 )   200 - 217   2007.1

On-going orogeny in the outer-arc of the Timor-Tanimbar region, eastern Indonesia Reviewed

Kaneko, Y., Maruyama, S., Kadarusman, A., Ota, T., Ishikawa, M., Tsujimori, T., Ishikawa, A., Okamoto, K.

Gondwana Research   11 ( 1-2 )   218 - 233   2007

History of the Pacific superplume: Implications for Pacific paleogeography since the late proterozoic

Utsunomiya, A., Ota, T., Windley, B.F., Suzuki, N., Uchio, Y., Munekata, K., Maruyama, S.

Superplumes: Beyond Plate Tectonics   2007

Protolith sequence, accretionary process, tectonometamorphism and fluid-rock interaction of Kamuikotan high-P/T metamorphosed accretionary complex, central Hokkaido, Japan

Masaaki Sakakibara, Kazumi Yasumoto, Michiharu Ikeda, Tsutomu Ota

The Journal of the Geological Society of Japan   113 ( Supplement )   S103 - S118   2007

Accretionary Complex Origin of the Mafic-Ultramafic Bodies of the Sanbagawa Belt, Central Shikoku, Japan Reviewed

Masaru Terabayashi, Kazuaki Okamoto, Hiroshi Yamamoto, Yoshiyuki Kaneko, Tsutomu Ota, Shigenori Maruyama, Ikuo Katayama, Tsuyoshi Komiya, Akira Ishikawa, Ryo Anma, Hiroaki Ozawa, Brian F. Windley, J. G. Liou

International Geology Review   47 ( 10 )   1058 - 1073   2005.10

P–T history of garnet-websterites in the Sharyzhalgai complex, southwestern margin of Siberian craton: evidence for Paleoproterozoic high-pressure metamorphism Reviewed

Tsutomu Ota, Dmitry P. Gladkochub, Eugene V. Sklyarov, Anatoly M. Mazukabzov, Teruo Watanabe

Precambrian Research   132 ( 4 )   327 - 348   2004.7

Thermobaric structure and metamorphic evolution of the Iratsu eclogite body in the Sanbagawa belt, central Shikoku, Japan Reviewed

Tsutomu Ota, Masaru Terabayashi, Ikuo Katayama

Lithos   73 ( 1-2 )   95 - 126   2004.3

The oldest mid-oceanic carbonate buildup complex: Setting and lithofacies of the Vendian (Late Neoproterozoic) Baratal limestone in the Gorny Altai Mountains, Siberia Reviewed

Yuko UCHIO, Yukio ISOZAKI, Tsutomu OTA, Atsushi UTSUNOMIYA, Mikhail M. BUSLOV, Shigenori MARUYAMA

Proceedings of the Japan Academy, Series B   80 ( 9 )   422 - 428   2004

Pictorial 5 : Field Occurrence of Ancient Plateau/seamount·top Limestone in the Gorny Altai Mountains, Southern Siberia

Mikhail BUSLOV

J. Geogr.   112 ( 4 )   Plate9 - Plate10   2003

Paleo-plateau/-seamount Limestone of the Cambrian Accretionary Complex in the Gorny Altai Mountains, Southern Siberia

Yuko UCHIO, Yukio ISOZAKI, Mikhail M. BUSLOV, Tsutomu OTA, Atsushi UTSUNOMIYA, Shigenori MARUYAMA

Journal of Geography (Chigaku Zasshi)   112 ( 4 )   563 - 585   2003

Contact metamorphism of the Daulet Suite by solid-state emplacement of the Kokchetav UHP-HP metamorphic slab Reviewed

Terabayashi, M., Ota, T., Yamamoto, H., Kaneko, Y.

International Geology Review   44 ( 9 )   2002

Metamorphic evolution of Late Precambrian eclogites and associated metabasites, Gorny Altai, southern Russia Reviewed

Ota, T., Buslov, M.M., Watanabe, T.

International Geology Review   44 ( 9 )   2002

Archean supracrustal rocks of the Sharyzhalgai Salient and their tectonic implications

Sklyarov, E.V., Gladkochub, D.P., Watanabe, T., Fanning, M.K., Mazukabzov, A.M., Men'shagin, Yu.V., Ota, T.

Doklady Earth Sciences   377 A   2001

Middle paleozoic age of metamorphism in the South Chuya complex in Gorny Altai (results of ar-ar, rb-sr, and u-pb isotope dating)

Plotnikov, A.V., Titov, A.V., Kruk, N.N., Ota, T., Kabashima, T., Hirata, T.

Geologiya i Geofizika   42 ( 9 )   2001

Thermobaric structure of the Kokchetav ultrahigh‐pressure–high‐pressure massif deduced from a north–south transect in the Kulet and Saldat–Kol regions, northern Kazakhstan Reviewed

Tsutomu Ota, Masaru Terabayashi, Christopher D. Parkinson, Hideki Masago

Island Arc   9 ( 3 )   328 - 357   2000.9

Geology of the Kokchetav UHP-HP metamorphic belt, Northern Kazakhstan Reviewed

Kaneko, Y., Maruyama, S., Terabayashi, M., Yamamoto, H., Ishikawa, M., Anma, R., Parkinson, C.D., Ota, T., Nakajima, Y., Katayama, I., Yamamoto, J., Yamauchi, K.

Island Arc   9 ( 3 )   2000

Modes of occurrence of sodic amphibole from the Kamuikotan metabasites, west of Asahikawa, central Hokkaido and the metamorphic history. Reviewed

Ota, Tsutomu

JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY   92 ( 3 )   103 - 123   1997

Metamorphic evolution of the Kamuikotan high-pressure and low- temperature metamorphic rocks in central Hokkaido, Japan Reviewed

Sakakibara, M., Ota, T.

Journal of Geophysical Research   99 ( B11 )   1994

K-Ar ages of the Kamuikotan metamorphic rocks in Hokkaido, Japan Reviewed

Ota, T., Sakakibara, M., Itaya, T.

Journal of Geological Society of Japan   99 ( 5 )   1993

O-12 Geology of the Taitao Ophiolite near the Chile Triple Junction

Anma R., Veloso A., Kaneko Y., Terabayashi M., Ota T., Komiya T., Katayama I., Maruyama S., Herve F.

Annual Meeting of the Geological Society of Japan   2002   7 - 7   2002

P-66 Stratigraphy of paleo-seamount limestone in the Cambrian accretionary complex in Gorny Altai mountain, southern Russia

Uchio Y., Isozaki Y., Ota T., Utsunomiya A., Buslov M. M., Maruyama S.

Annual Meeting of the Geological Society of Japan   2002   239 - 239   2002

P-68 The stratigraphy of Vendiian / Cambrian limestone derived from paleo-seamount in the Gomy Altai mountain, southern Russia

Uchio Y, Isozaki Y, Kawahata H, Nohda S, Ota T, Buslov M. M, Maruyama S

Annual Meeting of the Geological Society of Japan   2001 ( 0 )   231 - 231   2001

Metamorphic Petrology of Garnet Pyroxenite and Associated Gneiss from the Early Proterozoic Sharyzhalgai Block in the Southwestern Margin of Siberian Craton

Ota, T., Sklyarov, E.V., Gladkochub, D.P., Watanabe, T.

Gondwana Research   4 ( 4 )   2001

O-126 The Cambrian limestone derived from paleo-seamount in the Gorny Altai mountain, southern Russia : Field occurrence, stratigraphy, radiometric age, microfossil and Carbon isotopic composition

Uchio Y, Isozaki Y, Kawahata H, Nohda S, Ota T, Buslov M. M, Maruyama S

Annual Meeting of the Geological Society of Japan   2000 ( 0 )   74 - 74   2000

Proterzoic-Phanerozoicboundary limestone in the Gorny Altai mountain, southern Russia : Lithology and Pb-Pbisotopic age

Uchio Y., Isozaki Y., Nohda S., Ohta T, Ishikawa A., Utsunomiya A., Buslov M.M., Maruyama S.

Annual Meeting of the Geological Society of Japan   1999   305 - 305   1999

Geology of the Kokchetav UHP metamorphic belt, northern Kazakhstan (1)

Kaneko Yoshiyuki, Maruyama Shigenori, Terabayashi Masaru, Yamamoto Hiroshi, Ishikawa Masahiro, Anma Ryo, Parkinson C.B, Ota Tsutomu, Nakajima Youichi, Katayama Ikuo, Yamauchi Kazuhiro, Masago Hideki, Ogasawara Toshihide

Annual Meeting of the Geological Society of Japan   1998   431 - 431   1998

Petrology of eclogite in Barchikol area, Kokchetav UHP belt, northern Kazakstan

MASAGO Hideki, OTA Tsutomu, PARKINSON Chris, TERABAYASHI Masaru, NAKAJIMA Youichi, MARUYAMA Shigenori

Annual Meeting of the Geological Society of Japan   1998   432 - 432   1998

Vendian-Cambrian limestone in the Gorny Altai region, southern Russia:Field occurrence and lithology

Uchio Yuko, Isozaki Yukio, Ohta Tsutomu, Maruyama Shigenori, Buslov Mikhail

Annual Meeting of the Geological Society of Japan   1998   513 - 513   1998

Petrology of greenstones from the Cambrian accretionary comprex, southern margin of Siberian Craton

Utunomiya A., Ota T., Ishikawa A., Maruyama S., Buslov M.

Annual Meeting of the Geological Society of Japan   1998   444 - 444   1998

198 On-going Orogeny (2) : Lithology and metamorphism of the eastern and western parts of the Timor-Tanimbar metamorphic belt,Eastern Indonesia

Ota Tsutomu, Tsujimori Tatsuki, Kaneko Yoshiyuki, Kadarusman Ade, Okamoto Kazuaki, Maruyama Shigenori

Annual Meeting of the Geological Society of Japan   1997   201   1997

181 Metamorphic zonation of the Proterozoic Capricorn orogen,western Australia

Masago Hideki, Kaneko Yoshiyuki, Ohta Tsutomu, Maruyama Shigenori, Isozaki Yukio

Annual Meeting of the Geological Society of Japan   1997   193 - 193   1997

197 On-going Orogeny (1) : Tectonic evolution of the Timor-Tanimbar metamorphic belt,Eastern Indonesia

Kaneko Yoshiyuki, Maruyama Shigenori, Ota Tsutomu, Kadarusman Ade, Tsujimori Tatsuki, Okamoto Kazuaki

Annual Meeting of the Geological Society of Japan   1997   200   1997

神居古潭変成帯の発達史-変形変成史に基づく白雲母K-Ar年代の再検討を踏まえて. 総合研究(A) : 日本列島のジュラ紀-古第三紀付加体形成における緑色岩の意義

太田努

研究報告   ( 1 )   51 - 68   1996

390. Temporal development of thermal stucture and its controlling factors in a subduction zone : with an example of Kamuikotan subduction complex

SAKAKIBARA Masayuki, OTA Tsutomu, NISHIKAWA Kiyoharu

日本地質学会学術大会講演要旨   101   252 - 252   1994.9

低温高圧型変成岩の白雲母K-Ar年代の不一致-白雲母組成からのアプローチ-

太田努

日本地質学会第101年学術大会講演要旨   252   1994

北海道, 旭川西方の神居古潭変成岩類の地質と変成作用

太田努

日本地質学会第99年学術大会演旨   477   1992

40Ar-39Ar and K-Ar geochronological studies for Kamuikotan metamorphic rocks

TAKIGAMI Yutaka, OHTA Tsutomu, SAKAKIBARA Masayuki

Programme and abstracts the Volcanological Society of Japan   1991 ( 2 )   109 - 109   1991.10

304 K-Ar and Ar-Ar Ages of Kamuikotan Metamorphic Rocks, Hokkaido.

Ohta Tsutomu, Sakakibara Masayuki, Itaya Tetsumaru, Takigami Yutaka

日本地質学会学術大会講演要旨   98   435 - 435   1991.3

Behavior of lithium isotopes in subduction zone mantle

Grant number：21540505  2009 - 2011

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

OTA Tsutomu, MORIGUCHI Takuya, KUNIHIRO Takuya, JAMES G. brophy

Experimental study on boron cycling in the upper mantle

Grant number：18740346  2006 - 2008

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

OOTA Tsutomu

Chemical evolution of Earth through material differentiation at subduction zone

2004

Cooperative Research 

沈み込み帯における物質分化と地球の化学進化

2004

共同研究 

中生代の南太平洋スーパープルームの活動と環太平洋型高圧変成帯の上昇

Grant number：97J04187  1998 - 1999

日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

太田 努

広域変成帯の形成・上昇と太平洋型造山運動

1996 - 2003

共同研究 

Regional metamorphism and Pacific-type orogeny

1996 - 2003

Cooperative Research