Geoscience reports of Shimane University

島根大学総合理工学部地球資源環境学教室

ISSN:1343-9774

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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/3269

Geoscience reports of Shimane University 19

2000-12-25 発行

Chemical compositions of the constituent minerals of the Gazo mass, a tectonic block in the Sambagawa metamorphic belt, Besshi district, central Shikoku, Japan

Chemical compositions of the constituent minerals of the Gazo mass, a tectonic block in the Sambagawa metamorphic belt, Besshi district, central Shikoku, Japan

Sakurai, Tsuyoshi

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c006019016.pdf 2.72 MB

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The Gazo mass is an eclogite−bearing tectonic block within the Sambagawa metamorphic belt，central Shikoku，Japan．Chemical compositions of constituent minerals in pelitic and basic schists and eclogites from the Gazo mass have been analyzed by EPMA．Garnets contain < 13 mol% of the pyrope molecule and < 35 mol% grossular Clinopyroxenes are aregirine-augite and omphacite．Amphiboles are both sodic-calcic（magnesiokatophorite，katophorite，magnesiotaramite，taramite and barroisite）and calcic（edenite，ferredenite and magnesiohornblende）．The white micas present are paragonite and phengite．

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c006019016.pdf 2.72 MB

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