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ID 21108
JaLCDOI
Sort Key
9
タイトル(別表記)
Relict igneous minerals of the Sangun metamorphic rocks of the Tsuboi district, Okayama Prefecture
フルテキストURL
著者
李 青一 河北地質学院
柴田 次夫 岡山大学理学部地学教室
光野 千春 岡山大学理学部地学教室
抄録
The Sangun metamorphic rocks of the Maniwa Group are well developed in the Tsuboi district, Okayama Prefecture. These metamorphic rocks consist mainly of psammitic and pelitic sedimentary rocks and lavas and pyroclastics of basic to acidic compositions that recrystallized during the Sangun low-grade regional metamorphism. The metamorphic rocks in this district underwent to a considerable extent a mineralogical and textural transformation, but still preserve in parts their original, mineralogical and textural features. Unaltered, relict clinopyroxenes and hornblendes are commonly observed in the metamorphic rocks derived from basic lavas and intermediate pyroclastics. Microprobe analyses of these relict minerals suggest that their host rocks were probably derivatives of magma(s) with a non-alkaline affinity.
備考
原著論文 (Original Papers)
出版物タイトル
岡山大学温泉研究所報告
発行日
1984-03-25
54巻
出版者
岡山大学温泉研究所
出版者(別表記)
Institute for Thermal Spring Research, Okayama University
開始ページ
43
終了ページ
53
ISSN
0369-7142
NCID
AN00032853
資料タイプ
紀要論文
OAI-PMH Set
岡山大学
言語
Japanese
論文のバージョン
publisher
NAID
Eprints Journal Name
mmc