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Byobunoatama Granophyre Harayama, 1990

• Type locality: Byobunoatama, Azumi, Matsumoto city, Nagano prefecture
• Intrusive rocks
• Paleocene
• Intruded in: Okumatashiro Granite

• Lithofacies: Hornblende biotite granophyre

• Upper limit: Unconformity (Hotaka Andesites, Maehotakadake Welded Tuff)

• Distribution: Byobunoatama - Yokoo ridge - Shimomatashirodani valley, Azumi, Matsumoto city, Nagano pref.

• Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)