[ Top ] [ Japanese ]

Hongo Lava Hayashi, 1984

• Stratovolcano
• West Chokai edifice
• Volcanic rocks
• Pleistocene

• Lithofacies: Calc-alkaline
• Lithofacies: Hornblende-bearing hypersthene olivine augite andesite
• Lithofacies: Lava (A flow unit)

• Upper limit: Unconformity (Torinoumi Lava)
• Lower limit: Unconformity (Mototaki Lava, Ichinosaka Lava)

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

• Distribution: Kisakata - Naso river, Nikaho city, Akita 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.)