Papers - ORIHASHI Yuji
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The Chicxulub impact signature in East Asia
Hayu Ota, Junichiro Kuroda, Keiichi Hayashi, Hiroyuki Hoshi, Ken Sawada, Kohei Hosogaya, Hiroshi Nishi, Akira Ishikawa, Katsuhiko Suzuki, Masashi A. Ikeda, Yuji Orihashi, Mark Schmitz, Babu Ram Gyawali, Hironao Matsumoto, Reishi Takashima
Communications Earth & Environment 7 ( 1 ) 2026.5
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Field occurrence and zircon U–Pb ages of Middle Miocene Juniko Tuff, southwestern coast of Tsugaru province, Aomori Prefecture
Kanazashi Yui, Orihashi Yuji, Niki Sota, Iwano Hideki, Sasaki Minoru, Hirata Takafumi
The Journal of the Geological Society of Japan 131 ( 1 ) 489 - 506 2025.12
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Preliminary report of the whole-rock compositions of the mafic to intermediate volcanic rocks in Shitara district, central Japan
157 101 - 111 2025.12
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Zircon fission-track and U–Pb double dating for pyroclastic rocks, Hantarozawa Formation, filled in Nodai caldera, Shimokita Peninsula, Aomori Prefecture
Moriai Shu, Orihashi Yuji, Iwano Hideki, Umeda Koji, Amano Tadashi, Sasaki Minoru, Niki Sota, Hirata Takafumi
The Journal of the Geological Society of Japan 131 ( 1 ) 409 - 422 2025.12
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Geologic age of the Miocene Zaimokugawa Member of the Ikokuma Formation in the western part of Shimokita Peninsula, Northeast Japan
NEMOTO Naoki, ISHIKAWA Soshi, SHIMADA Chieko, ORIHASHI Yuji
Earth Science (Chikyu Kagaku) 2025.7
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The first evidence of the lower Cretaceous Weissert Event in NW Panthalassa: carbon isotope stratigraphy and U-Pb radiometric ages of the Soma-Nakamura Group in NE Japan
T. Tomaru, R. Takashima, Y. Orihashi, T. Yamanaka, H. Ando, Y .Asahara, H. Nishi, A. Kuroyanagi, T. Otsubo
Newsletters on Stratigraphy 2025.6
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Mesoproterozoic depleted spinel peridotites metasomatized by high-K hydrous melt in the Patagonian back-arc
Aline Alves dos Santos, Tiago Jalowitzki, Fernanda Gervasoni, Maurizio Mazzucchelli, Tommaso Giovanardi, Manuel Enrique Schilling, Maria Isabel Varas-Reus, Yuji Orihashi, Rodrigo Freitas Rodrigues, Richard Walter Carlson, Georgina Marianela Rubiano Lorenzoni, Daiji Hirata, Gustavo Walter Bertotto
Chemical Geology 670 2024.12
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Pristine helium from the Karoo mantle plume within the shallow asthenosphere beneath Patagonia
Tiago Jalowitzki, Hirochika Sumino, Rommulo V. Conceição, Manuel E. Schilling, Gustavo W. Bertotto, Andrés Tassara, Fernanda Gervasoni, Yuji Orihashi, Keisuke Nagao, Marcelo Peres Rocha, Rodrigo Antonio de Freitas Rodrigues
Nature Communications 15 ( 1 ) 6402 2024.7
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青森県,下北半島西部に分布する新第三紀珪長質火山岩類年代層序の再検討と仏ヶ浦カルデラの提唱
盛合 秀・折橋裕二・佐々木実・沼田翔伍・仁木創太・浅沼 尚・淺原良浩・平田岳史
地質学雑誌 130 ( 1 ) 2024.5
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環状列石構成礫の石材および供給源
丸山哲弥・佐々木 実・折橋裕二
酪農(３)遺跡ー国道279号むつ南バイパス道路改築事業に伴う遺跡発掘調査報告書 ２部冊 ( 第４章第９節 ) 204 - 221 2024.2
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Rapid growth and catastrophic destruction events of Planchón Volcano, Southern Andes
José Antonio Naranjo, Jorge Romero, Juan Pablo Contreras, Yuji Orihashi, Kevin Scott, Miguel Haller, Hirochika Sumino
Volcanica 7 ( 1 ) 21 - 49 2024.1
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Geochronological and petrological investigations of Miocene felsic igneous rocks in the Amakusa Islands, southwest Japan: Possible extension of the Setouchi Volcanic Belt
Hironao Shinjoe, Yuji Orihashi, Mana Akasaka, Sota Niki, Minoru Sasaki, Takafumi Hirata
Island Arc 2024.1
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中部地方，設楽地域の津具火山岩類の全岩化学組成（予報）
新正 裕尚, 折橋 裕二
東京経済大学人文自然科学論集 153 65 - 75 2023.12
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Central vs. lateral growth and evolution of the < 100 ka Peinado composite volcano, southern Central Volcanic Zone of the Andes
Pablo Grosse, Silvina R. Guzmán, François Nauret, Yuji Orihashi and Hirochika Sumino
Journal of Volcanology and Geothermal Research 2022.5
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A cold seep triggered by a hot ridge subduction.
Villar-Muñoz L, Kinoshita M, Bento JP, Vargas-Cordero I, Contreras-Reyes E, Tinivella U, Giustiniani M, Abe N, Anma R, Orihashi Y, Iwamori H, Nishikawa T, Veloso EA, Haraguchi S
Scientific reports 11 ( 1 ) 20923 2021.10
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Zircon U-Pb age of the acidic tuff from the Miocene Kuma Group, western Shikoku
Shinjoe Hironao, Orihashi Yuji
The Journal of the Geological Society of Japan 127 ( 10 ) 595 - 603 2021.10
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青森県南部，湯ノ沢カルデラ噴出物である尾開山凝灰岩の高精度・高確度噴出年代の決定： 同一ジルコンU-Pb年代とフィッション・トラック年代のダブル年代測定
田口春那, 折橋裕二, 佐々木実, 宮嶋佑典, 岩野英樹, 平田岳史
地質学雑誌 127 ( 9 ) 545 - 561 2021.9
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Zircon LA-ICP-MS U-Pb age of the main eruptives (Nijikai Tuff) constituting the Ikarigaseki Caldera, southern Aomori Prefecture
Yuki Aikawa, Yuji Orihashi, Minoru Sasaki,Kaishi Nakao and Yuichi Takaku
Jour. Geol. Soc. Japan 127 ( 7 ) 431 - 436 2021.7
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Single-pulse laser ablation-inductively coupled plasma-mass spectrometry U-Pb dating of thin zircon rims: An application to metamorphic rocks from Mount Everest, eastern Nepal
Iwano, H., T. Hirata, J. Hosoi, H. Sakai, Y. Orihashi and T. Danhara
Chemical Geology 559 119903 2021.1
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U-Pb ages of Miocene near-trench granitic rocks of the Southwest Japan arc: implications for magmatism related to hot subduction
Shinjoe, H., Y. Orihashi and R. Anma
Geological Magazine 1 - 25 2021.1