Two Kinds of Garnet Amphibolites in the Momose-Mizunashi District, Hida Metamorpic Belt, Central Japan

Inazuki, Tsuneo

北海道大学理学部紀要, 1981, 20(1), 21-33

Permalink : https://hdl.handle.net/2115/36705

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URI	https://hdl.handle.net/2115/36705
タイトル	Two Kinds of Garnet Amphibolites in the Momose-Mizunashi District, Hida Metamorpic Belt, Central Japan
著者	著者名 Inazuki, Tsuneo
言語	英語
発行日	1981-03
出版者	北海道大学
出版者	Hokkaido University
収録物名	北海道大学理学部紀要
収録物名	Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy
巻(号)	20(1)
ページ	21-33
抄録	The mode of occurrence and chemical composition of garnet amphibolite in the Momose-Mizunashi district of the Hida Metamorphic Belt are described. The masses of garnet ampibolite form thin fusiform bodies whose occurrence is concordant with surrounding pelitic and basic gneisses. Formation of garnets is inferred to depend on chemical speciality of the original rocks such as high ΣFeO/MgO and low CaO/Al2O3, ratio. They are classified into two kinds of garnet amphibolite according to CaO content in garnet, i.e., one comparatively low in the CaO content, and the other rather high in the CaO content. The occurrence of Ca-rich almandine amphibolite seems to imply that the metamorphic condition in the Momose-Mizunashi district belongs to slightly higher pressure type than most prevailing metamorphic conditions in the Hida Metamorphic Belt.
資源タイプ	紀要論文
出版タイプ	Version of Record
PISSN	0018-3474