Session Details
[2poster01-22]T1 ［トピック］変成岩とテクトニクス（22件分）
Mon. Sep 15, 2025 1:30 PM - 3:00 PM JST
Mon. Sep 15, 2025 4:30 AM - 6:00 AM UTC
Mon. Sep 15, 2025 4:30 AM - 6:00 AM UTC
T1_poster(General Edu. Build.C, 1-2F)
[T1-P-11]Double zoned garnet from Sanbagawa complex in the Saganoseki Peninsula, eastern Kyushu: A possibility of an advection from beneath Cretaceous forearc to the Sanbagawa subduction.
*Kazuhiro Miyazaki1, Yoshihiro Nakamura1, Mitsuhiro Nagata2 (1. Geological Survey of Japan, AIST, 2. Nihon Univ.)
[T1-P-12]Coarse-grained garnet in a quartz vein of the Sanbagawa schists from Nagatoro area,japan
*Masato KATO1, Mutsuko Inui1, Katsuyoshi Midhibayashi2 (1. Kokushikan University, 2. Nagoya University)
[T1-P-13]Progress of hydrothermal alteration of ultramafic rocks in the Tosa Megamullion.
*Ryosuke Oyanagi1,2, Yasuhiko Ohara3,2,4 (1. Kokushikan University, 2. JAMSTEC, 3. Japan Coast Guard, 4. Nagoya University)
[T1-P-14]Metasomatism accompanied by mantle carbonation reaction at slab-mantle interface: An example from Sarutagawa region in Sambagawa metamorphic belt, central Shikoku
*Shunya Okino1, Atsushi Okamoto1, Madhusoodhan Satish Kumar2 (1. Tohoku University Graduate School of Environmental Studies, 2. Niigata University Faculty of Science Department of Science)
[T1-P-15]Metamorphic reaction and fluid behavior in ultramafic rocks associated with contact metamorphism: a case study of the Sanbagawa Belt, Northern Akaishi Mountains
*Kaho NOBUHARA1, Hiroshi MORI1, Yurie TSUKISHIMA1, Takayoshi NAGAYA2, Takafumi SHINYA1, Yuho HAYAKAWA3, Ken YAMAOKA4, Koichiro FUJIMOTO5, Tetsuya TOKIWA1 (1. Shinshu University, 2. Waseda University, 3. Chuo Kaihatsu Corporation, 4. GSJ, AIST, 5. Tokyo Gakugei University)
[T1-P-16]Ultramafic bodies in Sanbagawa metamorphic belt, SW Japan
*Koki AIDA1, Simon Richard WALLIS1 (1. The University of Tokyo)
【ハイライト講演】 日本列島の三波川変成帯（御荷鉾帯起源も含む）では、多様なテクトニックセッティングからもたらされた超苦鉄質岩体が点在している。著者らは、約40岩体・約200試料という圧倒的な量の野外調査・試料観察を行い、超苦鉄質岩の特徴を議論している。三波川帯の超苦鉄質岩類の分布と起源・テクトニクスについて、これまで以上の情報が得られることが期待される。※ハイライト講演とは．．．
[T1-P-17]Raman spectroscopic analysis of the Kawai Mylonite in Kishiwada area, Osaka Prefecture
*Yu ARAKI1, Kazuya SHIMOOKA1, Motohiro TUBOI1 (1. Kwansei Gakuin University)
[T1-P-18]Relationship between metamorphic temperature and degree of graphitization and microstructural development of quartz and albite in Sambagawa pelitic schist, Tenryu area
*Aoi Harada1, Yui Kouketsu1, Katsuyoshi Michibayashi1 (1. Department of Earth and Planetary Sciences, GSES, Nagoya University)
[T1-P-19]Petrological characteristics and crystal fabric of two types of residual peridotites in the South Mariana Forearc Ridge, Mariana Trench
*Kana MIYATA1, Shigeki Uehara3, Yasuhiko Ohara2,4, Katsuyoshi Michibayashi1,2 (1. Graduate School of Environmental Studies, Nagoya University, 2. Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC, 3. Shizuoka University, 4. Hydrographic and Oceanographic Department of Japan)
[T1-P-20]Construction of Mohr-cyclides for finite deformation: For practical 3D finite deformation analysis
*Shogo SOEJIMA1 (1. Fukada Geological Institute)
[T1-P-21]Growth mechanism of coalesced grains of garnet in the Yanai area recognized by Electron Backscatter Diffraction
*Risa HAYASHI1, Takeshi IKEDA1, Yoshihiro Nakamura 2, Yumiko Harigane2 (1. Kyushu University, 2. National Institute of Advanced Industrial Science and Technology)
[T1-P-22]P–T evolution and tectonic implication of metamorphic rocks in Nam Dinh, southeasternmost part of the Day Nui Con Voi metamorphic complex, northern Vietnam
*Ippei KITANO1, Vuong Thi Sinh Bui1 (1. The Hokkaido University Museum, Hokkaido University)
[T1-P-23]Examination of partial melting model for the geochemical variation of the dioritic-gabbroic unit in the Kamioka area, the Hida belt
*Tomoyuki Mizukami1, Chiori Sugahara1, Kodai Mikami1, Norikatsu Akizawa2, Akihiro Tamura1, Tomoaki Morishita1 (1. Kanazawa University, 2. Hiroshima University)
[T1-P-24]Metamorphic rocks with distinct metamorphic histories occurring in the Yoshimi Hills, Kanto Mountains.
*Tatsuro Adachi1, Ichiro Iwasaki2 (1. Kyushu University, 2. Waseda University)
[T1-P-25]Deformation history of the Nishisonogi metamorphic rocks
*Miki SHIGENO1, Yasushi MORI1, Kazuo INOUE2 (1. Kitakyushu Museum of Natural History and Human History, 2. Nagano prefecture Matsumoto construction office)
[T1-P-26]Petrography and P–T estimations of the Kamuikotan metamorphic rocks in Hobetsu-Fukuyama area, Mukawa town, Hokkaido
*Taiki Minagawa1, Ippei Kitano2 (1. Department of Natural Science History, Graduate School of Science, Hokkaido University , 2. The Hokkaido University Museum)
[T1-P-27]Preliminary study on the formation of jadeite and glaucophane in jadeite-quartz meta-tonalite in the Kamuikotan Zone, Hokkaido, Japan
*Hayato Ueda1, Masaki Nakano1 (1. Niigata Univ.)
[T1-P-28]Loss of carbonaceous material in pelitic rocks during contact metamorphism: Insights from metamorphic temperature and carbon content analyses in the Sanbagawa Belt, northern Akaishi Mountains
*Akiko Nakazawa1, Shiori Horiba1,2, Naoaki Matsubayashi1, Hiroshi Mori1, Kaho Nobuhara1, Koichi Mimura3, Hina Dohi3, Ken Yamaoka4, Tetsuya Tokiwa1 (1. Shinshu University, 2. Nippon Koei Co., Ltd., 3. Nagoya University, 4. GSJ, AIST)
[T1-P-29]Zircon U-Pb Age of Albitite and its Genetic Relation to Jadeite in Itoigawa city, Niigata
*Hinata NISHIZAWA1, Hana OKADA1, Hayato UEDA1 (1. Niigata University)
[T1-P-30]Origin of Amphibole rocks and its Causal relationship with Kosmochlor in the Yamanobo Area, Itoigawa City, Niigata, Japan.
*Hana OKADA1, Hinata NISIZAWA1, Hayato UEDA1 (1. Niigata University)
【ハイライト講演】 コスモクロア輝石はCrを主成分に含む希少な輝石である。2019年に新潟県山之坊露頭での産出が新たに記載されたが、コスモクロア輝石とその周囲をとりまく角閃石岩の成因関係が理解されていない。本研究では野外調査・岩石組織観察・鉱物化学分析を行い、曹長石、ヒスイ輝石、角閃石、クロム鉄鉱、蛇紋石が複数のステージによって反応し、最終的にクロム鉄鉱と拡散してきたNa2O成分が反応することでコスモクロア輝石が生成したことを明らかにした。※ハイライト講演とは．．．
[T1-P-31]Formation mechanisms and simulation of extremely coarsened single crystals: a case study of the Takashima mantle xenolith
*Tan Furukawa1, Tatsuki Tsujimori1 (1. Department of Earth Science, Graduate School of Science, Tohoku University)
【ハイライト講演】 岩石組織は多くの場合非平衡であり、平衡状態に向かう途中であるためその岩石が保持された状態の継続時間を見積もれる可能性がある。本研究はピン止め効果のような粒成長を阻止する現象があっても時間情報を抽出可能である異常粒成長に着目している。このような組織を含んでいる佐賀県高島産のダナイトゼノリスを例にとり、組織観察とモンテカルロシミュレーションを組み合わせて異常粒成長発生の妥当性を検証し、時間情報抽出の可能性を探っている。※ハイライト講演とは．．．
[T1-P-32]Resolution assessment of subduction-zone geodynamic models : Matching grid size to geological process scale
*Kohei SHISEKI1, Tatsuki TSUJIMORI1 (1. Tohoku Univ.)