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Sasamoriyama Volcanic Products

• Type locality: Mount Sasamori, Tazawako, Senboku city, Akita prefecture
• Volcanic rocks
• Stratovolcano, Lava dome
• Pleistocene - Holocene

• Lithofacies (Dome): Quartz-bearing clinopyroxene orthopyroxene dacite lava
• Lithofacies (Stratovolcano): Clinopyroxene orthopyroxene andesite lava (3 flow units)

• Thickness (Dome): ca. 20 m or thicker
• Thickness (Stratovolcano): 2 - 4 m (A flow unit)
• Upper limit: Unconformity (Akakurazawa Pyroclastic Flow Deposit, Katakurazawa Lava, 4th Pyroclastic Cone Deposit)
• Lower limit: Unconformity (Yamatsuda Formation, Koshitomaezawa Formation)

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

• Distribution: Mount Sasamori, Tazawako, Senboku city, Akita pref.

• Suto and Ishii (1987) Geology of the Shizukuishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 142p. (in Japanese with English abstract 5p.)