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Akazawa Lava Nakano, 1989

• Type locality: 2,350 m above sea level of Akazawa creek - Itoshindo trail, Taira, Omachi city, Nagano prefecture
• Volcanic rocks
• Pleistocene (0.12 Ma, K-Ar)

• Sedimentary facies: An unit of composite lava flow
• Lithofacies (Upper): Dacite lava
• Lithofacies (Lower): Andesite lava

• Source: Lake Washibaike
• Thickness: 100 m or thicker
• Upper limit: Unconformity (Washibaike Lava, Washibaike Scoria and Explosion Breccia)
• Lower limit: Unconformity (Funatsu Granitic Rocks, Warimosawa Porphyritic Granodiorite, Jinzu Group)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Akazawa creek - Itoshindo trail - Lake Washibaike, Taira, Omachi city, Nagano pref.

• Harayama et al. (1991) Geology of the Yarigatake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 190p. (in Japanese with English abstract 8p.)