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ID 13952
Eprint ID
13952
フルテキストURL
Thumnail ESR_1_1.pdf 418 KB
著者
野坂 俊夫 Department of Earth Sicences, Faculty of Science Okayama University
柴田 次夫 Department of Earth Sicences, Faculty of Science Okayama University
抄録
Ultramafic rocks exposed around Mt. Ohsa(= Ohsa-yama), Okayama prefecture, designated as "Ohsa-yama ultramafic body" all together, are one of the Alpine-type peridotites in the Sangun metamorphic belt. They are intensely serpentinized and locally suffered contact metamorphism by younger granitic intrusions. In a por-tion of the ohsa-yama body where it has been affected by the contact metamorphism, the constituent minerals, texture and structure of primary ultramafic rocks have been locally preserved. Petrographic studies revead that the primary ultramafic rocks of the ohsa-yama body consist domimantly of dunite and harzburgite possessing no obvious layering, and their constituent minerals are similar in composition to those of the Tari-Misaka and Ashidachi ultramafic bodies. These features indicate that unlike the Ochiai-Hokubo body, the Ohsa-yama ultra-mafic body belongs to the "massive group" of the Arai's (1980) classification.
キーワード
petrography
dunite
harzburgite
massive ultramafic body
発行日
1994-09-20
出版物タイトル
Okayama University Earth Science Report
出版物タイトル(別表記)
岡山大学地球科学研究報告
1巻
1号
出版者
岡山大学理学部地球科学教室
出版者(別表記)
Department of Earth Sciences Faculty of Science, Okayama University
開始ページ
1
終了ページ
8
ISSN
1340-7414
NCID
AN10506284
資料タイプ
紀要論文
言語
English
著作権者
岡山大学地球科学研究報告編集委員会
論文のバージョン
publisher
査読
無し
Eprints Journal Name
esr