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Lower Kanomatagawa Lava

Invalid synonym: Kanomatagawadaiichi Lava

• Stratovolcano
• Old edifice
• Volcanic rocks
• Pleistocene

• Lithofacies: Calc-alkaline
• Lithofacies: Hypersthene augite andesite, Olivine hypersthene augite andesite
• Lithofacies: Large plagioclase phenocrysts deficient
• Lithofacies: Lava (more than 4 flow units)
• Lithofacies (Minor): Sands and gravels, Tuff breccia

• Thickness (Overall): 70 - 80 m or thicker
• Thickness (A unit): several - 40 m
• Upper limit: Unconformity (Upper Kanomatagawa Lava)
• Lower limit: Unconformity (Horaisan Volcanic Rocks)

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

• Distribution: Kanomata river - Taemon creek - Nakazawa creek, Sakata city, Yamagata pref.

• Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)