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Shirasawagawa Lava

Invalid synonym: Kanomatagawa Lava

• Stratovolcano
• Old edifice
• Volcanic rocks
• Pleistocene

• Lithofacies: Calc-alkaline
• Lithofacies: Hypersthene olivine augite andesite
• Lithofacies: Lava (A flow unit)

• Thickness: ca. 20 - 100 m
• Upper limit: Unconformity (Shichikosan Lava)
• Lower limit: Unconformity (Aosawa Formation)

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

• Distribution: Kanomata river - Shirasawa river, 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.)