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＜departmental bulletin paper＞
Large Phenocrystic Pyroxenes in Basaltic Rocks of Northern Kyushu, Japan
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| Abstract | Large phenocrystic pyroxene up to 1 cm. in length occurs in Cenozoic basaltic rocks of northern Kyushu and Goto islands. New chemical analyses of five phenocrystic pyroxenes, one groundmass pyroxene a...nd・ nine pyroxenes of basic or ultrabasic inclusion in the same basalt are shown. The Al203 content is largest in the phenocrystic pyroxene of host basalts and the pyroxene of gabbroic inclusion and decreases from the pyroxene of dunite-pyroxenite to the groundmass pyroxene. Calculation of Tschermak's component after H. S. YODER and C. E. TILLEY is given and genetic relation of these pyroxenes is also discussed.show more |
| Table of Contents | I 緒言 II 輝石巨斑晶を含む玄武岩 III 玄武岩中に含まれる捕獲岩類 IV 分析試料の調製 V 化学分析の方法および分析誤差 VI 輝石の化学組成 VII かんらん岩，輝石岩およぴ斑れい岩質捕獲岩中の単斜輝石の成因 VIII 玄武岩中の斑晶輝石と斑れい岩質捕獲岩中の輝石 |
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| Created Date | 2021.12.01 |
| Modified Date | 2023.08.01 |