Session Details
T7[Topic] From magma source and magma plumbing system to volcano formation and hydrothermal alteration
Tue. Sep 15, 2026 1:30 PM - 3:00 PM JST
Tue. Sep 15, 2026 4:30 AM - 6:00 AM UTC
Tue. Sep 15, 2026 4:30 AM - 6:00 AM UTC
T7_poster(Academic Promenade)
[T7-P-22]Petrological Characteristics and Significance of a Newly Discovered Gabbro Dyke in the Yuya Area, Nagato, Yamaguchi Prefecture, Japan
*Toshiaki Shimura1, Chihiro Amaki1,2, Reina Kaihara1,3, Natsumi Sadamatsu1,4, Mari Takimoto1,5, Aoi Yoshioka1,6, Ryosuke Saito1 (1. Yamaguchi University, 2. Chubu Electric Power Co., Inc., 3. Chi-ken Sogo Consultants Co., Ltd, 4. Eight-Japan Engineering Consultants Inc., 5. West Japan Engineering Consultants, Inc., 6. Cosmo Construction Consultants Co., Ltd.)
[T7-P-23]Cooling history of a mafic dike intruding the Hiei Granite pluton
*sadayuki inoue1 (1. waseda univercity senior high school)
[T7-P-24]Two types of magma compositions identified in dolerite sills of the Shimokawa ophiolite in the northern Hidaka belt, Hokkaido
*Satomi KATO1, Hayato Ueda2, Sumio Miyashita3 (1. Samani town office, 2. Niigata Univ., 3. Non-Profit Organization Hokkaido Research Center of Geology)
[T7-P-25]Geological structure of the Tokuyama Bay volcano-plutonic complex, south-central Yamaguchi
*Sae OHKOUCHI1, Keisuke ESHIMA1, Masaaki OWADA1, Hayato UEDA2 (1. Yamaguchi Univ., 2. Niigata Univ.)
[T7-P-26]Petrological feature of Miocene and Pleistocene volcanic rocks in the Asahi area, Eastern Toyama Prefecture, and comparison with the Northern Fossa Magna region
*Toshiro Takahashi1, Yoshitaka Ishii2, Takumi Takizawa3 (1. Niigata University, 2. Hokuyo construction Co., Ltd, 3. Kashiwazaki-higashi J.H.S.)
[T7-P-27]Geological and petrological studies of Oligocene volcanic rocks in the vicinity of Wajima City, Ishikawa Prefecture, Japan
*Haru KOSAKA1, Yuki HASHIMOTO2, Raiki YAMADA3, Toshiro TAKAHASHI4 (1. Graduate School of Sciences and Technology, Niigata University, 2. JFE Mineral & Alloy Company, Ltd., 3. National Institute of Advanced Industrial Science and Technology, 4. Department of Geology, Faculty of Science, Niigata University)
[T7-P-28]Geochemical Characteristics and Tectonic Evolution of Green Tuff Formation in the Back-arc Region of the Northeast Japan Arc
*Miyuki Nonaka1,2, Susumu Umino2 (1. JAPEX, 2. Kanazawa Univ.)
[T7-P-29]Petrological characteristics of Miocene arc magma inferred from primitive basalts in the Shimokita Peninsula: Insights from the SN-010 deep drilling core
*Sora Shimizu1, Yuji Ichiyama1, Akihiro Tamura2, Tomoaki Morishita2 (1. Chiba Univ., 2. Kanazawa Univ.)
[T7-P-30]Examination of primary magma segregation depth by olivine-augite maximum fractionation method : An example of the Katakurazawa lava flows from Akita-Komagatake volcano in the volcanic front, Northeast Japan arc
*Tomimasa HATAKEYAMA1, Mitsuhiro YASUI1,2, Masataka AIZAWA3, Takumi IMURA4, Takashi HOSHIDE5, Akira CHIBA5, Aoi HIRATA5, Kakeru SATO1, Ryota SAWAFUJI1, Ryo IMAI1, Shigeki KODAMA1, Yoshitada ASAKAWA1, Tsukasa OHBA5, Masao BAN4, Ministry of Land, Infrastructure, Transport and Tourism Yuzawa Office of River and National Highway6 (1. Sohken consult. Co. Ltd., 2. Guide group of Happo-Shirakami Geopark, 3. Hokkaido Education University, 4. Yamagata University, 5. Akita University, 6. Ministry of Land, Infrastructure, Transport and Tourism Yuzawa Office of River and National Highway)
[T7-P-31]Chemical Compositions of Olivine and Chromian Spinel in the Hakusan Volcanic Ejecta: Implications for Deep Mafic Magma
*Daiki YAMAUCHI1, Tomoaki MORISHITA1,2, Atsushi SAKAYORI1 (1. Kanazawa University, 2. JAMSTEC)
[T7-P-32]Pleisotocene volcanic activity of Iwaki Volcano
*Hajime Taniuchi1, Ryuta Furukawa1, Seiko Yamasaki1, Kazuki Ishii1,2 (1. Geological Survey of Japan, AIST, 2. Ibaraki University)
[T7-P-33]Estimation of the emplacement temperature and cooling history of pyroclastic flow deposits using carbonized wood reflectance
*Keita Nakano1, Arito Sakaguchi2, Noritoshi Okazaki1 (1. Hokkaido Research Organization, 2. Yamaguchi University)
[T7-P-34]Edible Lava Flow Analogue Experiments for Visualizing Volcanic Landform Formation
*Tatsuo Kanamaru1, Akihiko Fujinawa2 (1. College of Humanities and Sciences, Nihon University, 2. Professor Emeritus, Ibaraki University)
[T7-P-35]Flow process of the Kawagodaira rhyolite lava in the Izu Peninsula deduced from its surface topography
*Kuniyuki Furukawa1, Tatsuo Kanamaru2, Koji Uno3, Motohiro Tsuboi4 (1. Aichi University, 2. Nihon University, 3. University of Hyogo, 4. Kwansei Gakuin University)
[T7-P-36]Multiscale Topological Characterization of Pore Structures in Mid-Ocean Ridge Basalts
*Masayoshi HOSHIDA1, Ryosuke OYANAGI1, Atsushi OKAMOTO1 (1. Tohoku Univ.)
[T7-P-37]Geometric Relationship Between Platy Joint Surfaces and Rock Fabric
*Fumihiro FUKAZWA1, Hiroshi KAWABATA1, Tetsuro SATO1, Yuhji YAMAMOTO1 (1. Kochi Univ.)
[T7-P-38]Eruption site of the drifting pumice discovered in the southeren Izu arc in October 2023, inferred from the geochemical variation of rhyolites in the southern Izu intra-arf rift zone
*Satoru HARAGUCHI1, Tatsu Kuwatani2 (1. Hydrographic and Oceanographic Department, Japan Coast Guard, 2. JAMSTEC)
[T7-P-39]Geochemical Discontinuity in Basaltic Lava Flows from the Spreading Axis of the Afar Depression, Ethiopia
*Shin-ichi KAGASHIMA1, Kirika KITAGAWA2, Rikako NOHARA3, Akira OGATA1, Naoto ISHIKAWA4, Ryokei YOSHIMURA5, Nobutatsu MOCHIZUKI6, Masakazu FUJII7, Tesfaye Kidane Birke8, Ameha Atnaf Muluneh9, Balemwal Atnafu9 (1. Yamagata Univ., 2. Zao Geopark, 3. Niigata Univ., 4. Toyama Univ., 5. Kyoto Univ., 6. Kumamoto Univ., 7. NIPR, 8. Wayne State Univ., 9. Addis Ababa Univ.)