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1970-71AD Eruption Products

• Tephra
• Holocene (1970 - 1971AD)

• Lithofacies: Lava, Fall deposits (Volcanic bomb, Volcanic blocks, Lapilli, Volcanic ash)
• Lithofacies: Clinopyroxene orthopyroxene andesite

• Eruptive volume: 1.43 - 1.57 x 10³ m³
• Thickness (Lava): 30 m or thicker
• Distribution (Lava, Length): ca. 600 m
• Distribution (Lava, Width): ca. 300 m

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

• Distribution: Mount Akita-Komagatake, 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.)