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Vol.XX, No.1 >

Ti- and Al-rich Clinopyroxenes from the Dolerite Dike in the Meguro Area of the Hidaka Metamorphic Belt, Hokkaido

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タイトル: Ti- and Al-rich Clinopyroxenes from the Dolerite Dike in the Meguro Area of the Hidaka Metamorphic Belt, Hokkaido
著者: Maeda, Jin'ichiro 著作を一覧する
発行日: 1981年 3月
出版者: 北海道大学 = Hokkaido University
誌名: 北海道大学理学部紀要 = Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy
巻: 20
号: 1
開始ページ: 79
終了ページ: 86
抄録: A Ti- and Al-rich clinopyroxene (augite-salite) is described from the dolerite dike in the southern part of the Main zone of the Hidaka metamorphic belt. Maximum contents of TiO2 and Al2O3 attain up to 3.5 percent and 8.1 percent, respectively. An increase in Ti, Al, Fe/(Mg + Fe) and Ca/(Ca + Mg + Fe) and a decrease in Si from the colorless core to the pinkish margin are observed. This may suggest that SiO2 concentration in magma crystallizing the clinopyroxene decreases successively and that the dolerite belongs to alkaline suite.
資料タイプ: bulletin (article)
URI: http://hdl.handle.net/2115/36708
出現コレクション:Vol.XX, No.1

 

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