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Kawaiyama Dacite Ozawa and Sumi, 1961

• Type locality: Kawaiyama, Akinomiya, Yuzawa city, Akita prefecture
• Volcanic rocks
• Miocene

• Lithofacies: Hornblende dacite tuff breccia, Lapilli tuff, Volcanic conglomerate
• Lithofacies (Minor): Lava, Tuff, Welded tuff

• Thickness: 150 - 300 m
• Lower limit: Unconformity (Sanzugawa Formation, Torakeyama Formation, Granodiorites)

• Distribution: Kawaiyama - Osawa creek, Akinomiya, Yuzawa city, Akita pref.

• Ozawa et al. (1979) Geology of the Yuzawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 64p. (in Japanese with English abstract 4p.)
• Ozawa and Sumi (1961) Uzenkaneyama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 5p.)