 | | Journal (article/letter/editorial) | | ル* CHROME-SPINELS IN A BASANITIC LAVA FROM NANZAKI VOLCANO, IZU PENINSULA 白 木 敬 大 橋 不 黒 田 一(Keiichi...lato) in the Nanzaki basanitoid show a continuous compositional variation from chromian spinel (sense stricto)...titaniferous magnetite in the groundmass. The chromian spinel is one of the most aluminous found in microphenocrysts...ネ ル Table 1. Comparison with alkalic of Nanzaki basalts from basanitoid island 透 明 で あ る 。...豆 マ リ ア ナ島 弧 で は,硫 黄 島 の 粗 面 安 山 岩 以 船Vityazは spinel, ら石 基 中 の チ タ ン 磁 鉄 鉱 へ 連 続 的 に 変 化 し て い ス ピ | | | Journal (article/letter/editorial) | | Hokkaido,085 Japan ** MarineGeologyDepartment , GeologicalSurveyof Japan, Tsukuba,Ibaraki,305 Japan Iwojima...Pacific occur on the back-arc side (basanite of Nanzaki volcano from Izu Peninsula belonging to Izu-Ogasawara...among the vol canoes along the volcanic front of Japan (Fu kuyama, 1983). Geochemical features (major and...elements) 19, 1993; accepted for publication, of the Nanzaki May 18, 1994) basanites 234 Yasuo IKEDA and...showing location of major volcanic provinces (N, Nanzaki volcano) and sampling local ities along the Izu-Ogasawara |  | | Journal (article/letter/editorial) | | Nanjo Massif of the Mesozoic Mino terrane, central Japan T. AGATA1,* 1 2 AND I. HATTORI2 Laboratory of...Keizai University, Uchikubo, Inuyama City, 484-8504 Japan Department of Regional Environmental Studies, Fukui...Fukui University, Fukui City, 910-8507 Japan ABSTR ACT Chromite occurs together with olivine as phenocrysts...oceanic island alkalic basalt, Mesozoic Mino terrane, Japan. Introduction CHROMITE occurs as a minor phase...generally absent in differentiated rocks. Where spinel is present in differentiated rocks, it is usually |  | | Journal (article/letter/editorial) | | (1994) 241-263 The Asama igneous complex, central Japan: an ultramafic-mafic layered intrusion in the Mikabu...Nagoya Umverstty, Chtkusa-ku, Nagoya City, 464-01 Japan Received 5 November, 1993, revised and accepted...greenstone belt, Sambagawa metamorphic terrain of Mle Prefecture, its margins terminate by faults, and there IS...belt, Sambagawa metamorphic terrain, Mie Prefecture, central Japan (Fig 1 ) Unhke layered intrusions in many...with tlmenlte *Calculated by assuming the ideal spinel chemical formula gram show a tendency for the |  | | Journal (article/letter/editorial) | | from the Oura layered igneous complex, central Japan TAKASHI AGATA Laboralory of Earth Sciences. Nagoya...Economics University. Uchikubo, Inuyama City. 484 (Japan) LITHOS 0 Agata, T., 1988. Chrome spinels from...layered igneous complex, central Japan. Lithos, 21: 97-108. Chrome spinel is disseminated as a minor cumulus...ultramafic plutonic rocks. The AI20, content of the spinel increased markedly with proceeding crystallization...have increased with the crystallization of chrome spinel. In view of experimental results obtained in the | | | Journal (article/letter/editorial) | | 1977). calculated from total iron assuming ideal spinel formula. の 火 山 岩 の うち,高 瀬 戸 川 オ フ ィオ ラ イ ト中 の火W岩...(e) (Ridley et al., 1974) and basanite of Nanzaki volcano (f) (Shiraki et al., 1979) is also shown. ...講 演 要 旨.p.285. olivine basalt Setogawa Soc. Japan, cleavages and its Group, 86, in the Shi ...Picriticbasalt dikes in the Paleogene formation in Central Japan. Rep. Liberal Arts and Sci. Fac., Shizuaka Univ... clinopyroxenes Sci., SetogawaGroupin central Japan., J. Fcac. in Newfoundland. R.(1979), F. xelated |  | | Journal (article/letter/editorial) | | Chiba 260 (Japan) 2 Ocean Research Institute, University of Tokyo, Nakano, Tokyo 164 (Japan) Received...address: Makuhari-kita Highschool, Wakaba, Chiba 281, Japan. 0012-821x/84/$03.00 © 1984 Elsevier Science Publishers...central Japan, is andesite with age of about 7 Ma [17]. Sample C was collected at the Daruma volcano, northwestern...m p l i n g site Kume Island Irouzaki Daruma volcano 443-57-1, 6 - 7 443-54-3, 1 2 5 - 1 2 7 443-58-1...this examination that all the grains possess the spinel phase of the magnetite-ulvospinel series/3 or their |  | | Report (issue) | | 126165 (1979). Occurrence in syenite, Morotu, Japan. AENIGMATITE. Grapes et al., Contrib. Mineral. Petrol...Analysis, x-ray, UTA, infra-red, from Ehime Pref., Japan. ALLOPHANE. Henmi, (Clays Clay Miner. 28, 92-96... 126165 (1979). Occurrence in syenite, Morotu, Japan, of arfvedsonite. AMPHIBOLE. Grapes et al., Contrib...Microprobe analyses (6) and trace elements, Colima Volcano, Mexico. AMPHIBOLE. Makarova et al., (Zap. Vses...(1979). Analysis of ferroactinolite from Nara Pref., Japan, a 9.96, b 18.28, c 5.29A, beta 105 degrees 15' |
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