Shin‐ichi Kagashima

Yamagata University

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Ryokei Yoshimura

Kyoto University

Nobutatsu Mochizuki

Kumamoto University

Naoto Ishikawa

University of Toyama

Kirika Kitagawa

Jun‐Ichi Kimura

Japan Agency for Marine-Earth Science and Technology

Shin–Ichiro Higashino

Kyushu University

Ameha Muluneh

Addis Ababa University

Yo‐ichiro Otofuji

Kobe University

Tesfaye Kidane Birke

Toshiro Takahashi

Niigata University

Cooperative Institutions

Tohoku University

Kyushu University

Yamagata University

Kyoto University

Shimane University

Japan Agency for Marine-Earth Science and Technology

Geological Survey of Japan

National Institute of Advanced Industrial Science and Technology

Niigata University

National Institute of Polar Research

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P-186 Sr isotopic compositions of granitic rocks in the Yamizo Mountains

日本地質学会学術大会講演要旨 (2002)

Shin‐ichi Kagashima Yutaka Takahashi

Granitic rock

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Partial melting of mafic gneiss in the Rundvagshetta, Lutzow-Holm Complex, East Antarctica

Annual Meeting of the Geological Society of Japan The 121st Annual Meeting(2014' Kagoshima) (2014)

Shin‐ichi Kagashima Rie Uchiumi Toshisuke Kawasaki

10.14863/geosocabst.2014.0_423

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Granulite Xenoliths from the Sumikawa Granite Body, Niigata Prefecture, Japan: Finding of Spinel+Quartz Assemblage from the japanese Islands.

The Journal of the Geological Society of Japan (2002)

Toshiaki Shimura Toshiko Kawai Shin‐ichi Kagashima

Spinel+quartz assemblage is one of the indicators of ultrahigh-temperature (UHT) metamorphism. Metamorphic xenoliths of granulite facies occur in the Sumikawa Granite, Niigata Prefecture. We found the spinel+ quartz assemblage from a pelitic metamorphic xenolith in the granite body. The metamorphic textures show a clockwise P-T-t path and the metamorphic reactions follow the order;Grt+Sil=Spl+Qtz, and Spl+Qtz=Crd. According to thermodynamic model, the spinel+quartz assemblage in this rock is thought to be stable at T>860°C and P>600MPa. This assemblage was presumably generated by metamorphism in the lower crust in the Uetsu area.

Assemblage (archaeology)

Xenolith

10.5575/geosoc.108.347

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Citations (8)

Petrology of the Late Cretaceous to Paleogene plutonic rocks in the Iide Mountains

Annual Meeting of the Geological Society of Japan The 121st Annual Meeting(2014' Kagoshima) (2014)

Masaomi Kubo Shin‐ichi Kagashima

Paleogene

10.14863/geosocabst.2014.0_388

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Origin of felsic magmas of some large-caldera related stratovolcanoes in central part of NE Japan

Masao Ban Shiho Hirotani Ayaka wako Takuro Suga Yutaka Iai

Stratovolcano

Caldera

Felsic

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P-232 Sr isotopic compositions of the Precambrian basement from the Lurio Belt foreland, northern Mozambique

日本地質学会学術大会講演要旨 (2004)

Shin‐ichi Kagashima Kazuyuki Shiraishi G.H. Grantham B. A. Ingram

Basement

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Geology of Byobu Rock and Gobanme Rock, Prince Olav Coast, East Antarctica

Polar geoscience (2006)

M. Satish‐Kumar Shin‐ichi Kagashima Yoshimitsu Suda Yoichi Motoyoshi

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Two stage fractional crystallization of the porphyritic biotite granite from the Iwafune granitoids in the Budo Mountains, Niigata Prefecture, Japan.

The Journal of the Geological Society of Japan (2001)

Shin‐ichi Kagashima Toshiaki Shimura

新潟県北部の蒲萄山塊には, 後期白亜紀から古第二紀の岩船花崗岩類が分布する.蒲萄山塊南部の岩船花崗岩類は, 斑状黒雲母花崗岩, 黒雲母花崗岩, ざくろ石両雲母花崗岩, 両雲母花崗岩, 石英閃緑岩, 花崗閃緑岩に区分された.これらは産状, 構成鉱物, 全岩-鉱物組成から3つの岩類に分けられる.主要岩相である斑状黒雲母花崗岩の結晶作用を検討した.モード組成および全岩化学組成から屈曲したトレンドが得られ, 2段階の分別結晶作用が考えられる.マスバランス計算により, 第1段階では斜長石と黒雲母が主な分別鉱物であり, 第2段階では斜長石よりもカリ長石+黒雲母の分別が多かったことが導き出された.

Porphyritic

Fractional crystallization (geology)

10.5575/geosoc.107.515

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Citations (4)

Petrographical diversity and magma process of medium-grained hornblende-biotite granodiorite in the northern Uetsu area

Annual Meeting of the Geological Society of Japan The 119th Annual Meeting(2012' Osaka) (2012)

Ryosuke Kato Shin‐ichi Kagashima

Hornblende

10.14863/geosocabst.2012.0_382

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