研究等業績 - 原著論文 - 大場　司

Transition from magmatic to phreatomagmatic eruptions in Young Ciremai volcano, Indonesia: insights from stratigraphy, componentry, and textural analysis of tephra deposits

Wildan N. Hamzah , Tsukasa Ohba , Muhammad Andriansyah Gurusinga , Mradipta L. A. Moktikanana , Jananda N. Indriyanto , Takashi Hoshide , Mirzam Abdurrahman , Idham A. Kurniawan , Fadlin

Earth, Planets and Space   77   2025年02月  [査読有り]

研究論文（学術雑誌）   単著

DOI DOI2

Sulfur isotopic variations in the products of the 1895 CE eruption at Zao volcano (NE Japan): Implications for connecting eruption source and syn-eruptive magmatic-hydrothermal processes

Imura T.

Journal of Volcanology and Geothermal Research ( Journal of Volcanology and Geothermal Research )  452   2024年08月  [査読有り]

研究論文（学術雑誌）   国際共著

DOI

Geology, chronology, and temporal evolution of basaltic to dacitic magma system in Raung volcano, East Java, Indonesia

Moktikanana M.L.A.

Journal of Volcanology and Geothermal Research ( Journal of Volcanology and Geothermal Research )  452   2024年08月  [査読有り]

研究論文（学術雑誌）   国際共著

DOI

Paleomagnetism and paleomagnetic dating to large volcanic bombs: an example from the historical eruption of Azuma–Jododaira volcano, NE Japan

Hasegawa T.

Earth, Planets and Space ( Earth, Planets and Space )  75 ( 1 )   2023年12月  [査読有り]

研究論文（学術雑誌）   国内共著

DOI

Magmatic evolution and plumbing system of Gede Salak volcano, Banten, Indonesia

Muhammad Alfath Salvano Salni, Euis Tintin Yuningsih, Tsukasa Ohba

Indonesian Journal on Geoscience     2023年12月  [査読有り]

研究論文（学術雑誌）   国際共著

Characteristics of ash particles from the maar complex of Lamongan Volcanic Field (LVF), East Java, Indonesia: How textural features and magma composition control ash morphology

Muhammad Andriansyah Gurusinga,Tsukasa Ohba, Agung Harijoko, andTakashi Hoshide

Journal Volcanica ( Volcanica )  6 ( 2 ) 415 - 436   2023年11月  [査読有り]

研究論文（学術雑誌）   国際共著

DOI DOI2

Eruptive history of the last-1300-years activity of Kelud volcano, Indonesia: Inferences from stratigraphy, chronology, sedimentology, componentry, and geochemistry

Jananda N. Indriyantoa,Tsukasa Ohba, Takashi Hoshide, Syahreza S. Angkasa, Mirzam Abdurrachman

Journal of Volcanology and Geothermal Research ( Elsevier )  433   107723 - 107723   2023年01月  [査読有り]

研究論文（学術雑誌）   国際共著

DOI CiNii Research

Application of paleomagnetic dating to large volcanic bombs: An example from the historical eruption of Azuma-Jododaira volcano, NE Japan

Takeshi HASEGAWA; Bunta Kikuchi; Shohei Shibata; Yuhji Yamamoto; Takumi Imura; Masao Ban; Kae Tsunematsu; Chie Kusu; Makoto Okada; Tsukasa Ohba

Earth, Planets and Space     2023年  [査読有り]

研究論文（学術雑誌）   国内共著

Late Holocene tephrostratigraphy at Chokai volcano, northern Japan, and contribution to hazard assessment

Tsukasa Ohba, Shintaro Hayashi, Masao Ban, Takumi Imura, Yusuke Minami, and Masahiro Endo

Journal of Disaster Research ( Fuji publication )  17 ( 5 ) 724 - 735   2022年08月  [査読有り]

研究論文（学術雑誌）   国内共著

DOI

秋田県湯沢市蓮台寺のカオリン鉱物に富む礫質堆積物の産状と起源

鹿野和彦,石山大三,大場　司, 藤本幸雄,大口健志

地質学雑誌　   128 ( 1 ) 169 - 184   2022年01月  [査読有り]

研究論文（学術雑誌）   国内共著

DOI

火山灰中の鉱物からみた水蒸気噴火のメカニズム

大場 司, 井村 匠, 南 裕介, シャレザ サイディナ アンカサ

地学雑誌 ( 東京地学協会 )  130 ( 6 ) 797 - 809   2021年12月  [査読有り]

研究論文（学術雑誌）   国際共著

Zircon Hf-isotope constraints on the formation of metallic mineral deposits in Thailand

Veeravinantanakul A.

Resource Geology ( Resource Geology )  71 ( 4 ) 436 - 469   2021年10月  [査読有り]

研究論文（学術雑誌）  

DOI

Geologic and petrologic evolution of subvolcanic hydrothermal system: A case on pyroclastic deposits since the 1331 CE eruption at Azuma-Jododaira volcano, central Fukushima, North-Eastern Japan

Imura T.

Journal of Volcanology and Geothermal Research ( Journal of Volcanology and Geothermal Research )  416   2021年08月  [査読有り]

研究論文（学術雑誌）  

DOI

Geologic and petrologic evolution of subvolcanic hydrothermal system: a case on pyroclastic deposits since the 1331 AD eruption at Azuma-Jododaira volcano, central Fukushima, North-Eastern Japan

Imura, T., Ohba, T., and Horikoshi, K.

Journal of volcanology and geothermal research ( Elsevier )    2021年  [査読有り]

研究論文（学術雑誌）   国内共著

Deep crustal crystallization of tholeiitic melt: Insights from Manguao Basalt, Palawan, Philippines

James Cesar Avisado Refran , Tsukasa Ohba , Carlo Abundo Arcilla , Takashi Hoshide , Maria Ines , Rosana Balangue-Tarriela

Journal of Mineralogical and Petrological Sciences ( Journal of Mineralogical and Petrological Sciences )  115 ( 6 ) 440 - 456   2020年12月  [査読有り]

研究論文（学術雑誌）  

<p>Manguao Basalt is a Plio–Pleistocene basaltic lava flow located on the northeastern edge of Palawan Island, Philippines. The absence of active trenches surrounding the Palawan Continental Block (PCB) poses a challenge regarding the nature and origin of magmatism in the region. This study presents the petrographic and geochemical character of Manguao Basalt, as well as provides insights to the melt formation beneath the PCB. Manguao Basalt samples are olivine–phyric with minor pyroxenes, set in a plagioclase–dominated microcrystalline groundmass. Average bulk–rock major element composition of Manguao Basalt shows similarities to common olivine basalt tholeiite. Petrographic observations of the phenocrysts, however, show the unusual precedence of pyroxenes in the crystallization sequence. Calculated formation temperatures and pressures of the modal assemblage are consistent with this idea of early pyroxene formation. Simulations of mantle melting using the MELTS program show the formation of pyroxene–saturated primitive liquids. The evolution of these primitive liquids reaches similarities with Manguao Basalt composition at 1230–1260 °C. Simulations of equilibrium and fractional crystallization demonstrate the formation of olivine or orthopyroxene as the first crystals. However, the simulations done at equilibrium conditions are more consistent with the observed mineral chemistry of pyroxene phenocrysts in Manguao Basalt. Hence, maintaining the equilibrium between the source and melt is crucial for replicating the observed pyroxene chemistry. Magmatic underplating provides an excellent model for visualizing the melting and crystallization processes beneath the PCB. The model is also consistent with the narrative of other magmatic units in northern Palawan (e.g., Capoas Granite). The significant findings of this study contribute to the understanding of the tectonic evolution of the PCB.</p>

DOI

秋田県湯沢市，川原毛地獄の爆裂火口と噴出物

鹿野 和彦, 大場 司, 石山 大三

火山 ( 特定非営利活動法人 日本火山学会 )  65 ( 4 ) 105 - 118   2020年12月  [査読有り]

研究論文（学術雑誌）   国内共著

<p>Kawarage Jigoku, located in the post-caldera eruption center of the Pliocene Sanzugawa caldera, is known for its vigorous fumarolic activity and hydrothermal silicification. In this active geothermal field, the most intensely silicified area 500 m long and 300 m across includes circular or horseshoe-shaped four depressions 30-50 m deep and 120-160 m across, in which fumaroles, including those that are no longer active, are formed mainly along the inner walls. These depressions have been excavated to mine the natural sulfur deposited around the fumaroles over the last 500 years, and local people have never been concerned about the origin of the depressions. However, we recently found that pyroclastic density current (PDC) deposits cover the rims and outer slopes of the depressions with a thickness of centimeters to meters and are composed of silicified rock fragments ranging in size from lapilli to ash grains. This finding suggests that the depressions are craters formed by phreatic eruptions. The PDC deposits characteristically contain amoeba-like vesicles that are traces of vapor trapped from the PDCs. In addition, some constituent fragments have jigsaw cracks filled with quartz, providing evidence for hydraulic fracturing of the host rock due to sudden boiling of hot water at depths.</p>

DOI

Lahar record during the last 2500 years, Chokai Volcano, northeast Japan: Flow behavior, sourced volcanic activity, and hazard implications

Yusuke Minami, Tsukasa Ohba, Shintaro Hayashi, Yoko Saito-Kokubu, Kyoko S. Kataoka

Journal of Volcanology and Geothermal Research   387   2019年09月  [査読有り]

研究論文（学術雑誌）   国内共著

DOI

Hydrothermal Aluminum-Phosphate-Sulfates in Ash from the 2014 Hydrothermal Eruption at Ontake Volcano, Central Honshu, Japan

Takumi Imura, Yusuke Minami, Tsukasa Ohba, Akiko Matsumoto, Antonio Arribas and Mitsuhiro Nakagawa

Minerals     2019年08月  [査読有り]

研究論文（学術雑誌）   国内共著

Tephra stratigraphy and ash componentry studies of proximal volcanic products at Mt. Tangkuban Parahu, Indonesia: an insight to Holocene volcanic activity

Syahreza S. Angkasa, Tsukasa Ohba, Takumi Imura, Iwan Setiawan, Mega F. Rosana

Indonesian Journal on Geoscience     2019年08月  [査読有り]

研究論文（学術雑誌）   国内共著

噴出物中の熱水変質鉱物の特徴：十勝岳火山噴出物の例

井村　匠・大場　司・中川光弘

地質学雑誌   125 ( 3 ) 203 - 218   2019年03月  [査読有り]  [招待有り]

研究論文（学術雑誌）   国内共著