ダウンロード数 : ?
タイトルヨミ
オカヤマケン オオサ チイキ ノ サングン ヘンセイタイ チュウ ノ ランセンセキ ト フェロランセンセキ
日本語以外のタイトル
Glaucophane and Ferroglaucophane in the Sangun Metamorphic Terrane of the Oosa District, Okayama Prefecture, Japan
ファイル
言語
英語
著者
渡辺 暉夫
内容記述(抄録等)
The Sangun metamorphic terrane, which is situated in the inner side of southwest Japan, is one of the glaucophanitic metamorphic terranes of high-pressure intermediate type in late Paleozoic−early Mesozoic. It is characterized by widespread occurrences of pumpellyite-bearing assemblages and sodic amphibole-bearing assemblages in mafic schists. Sodic amphibole in the Sangun terrane is mainly crossite− magnesioriebeckite with b = Z (Hashimoto, 1968a & b; Nishimura, 1971; Okamura et al., 1975; Kobayashi, 1979) whereas glaucophane with b = Y shows relatively minor occurrence as described from Zone II in the Katsuyama district (Hashimoto, 1968a) and Goutsu ( = Gozu) district (Sengan et al., 1983). As suggested by Hashimoto (1968a, page 140), composition of sodic amphibole may reflect different physical conditions of metamorphism. Chemical composition of sodic amphibole is important for fully understanding the physical conditions of the Sangun metamorphism. The author briefiy descibes glaucophane and ferroglaucophane, the latter of which is first reported in the Sangun terrane, in the Oosa district.
掲載誌名
島根大学理学部紀要
18
開始ページ
69
終了ページ
74
ISSN
03879925
発行日
1984-12-25
NCID
AN00108106
出版者
島根大学理学部
出版者別表記
The Faculty of Science, Shimane University
資料タイプ
紀要論文
部局
総合理工学部
他の一覧