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Hirotomeno Lava

• Volcanic rocks
• Pleistocene

• Sedimentary facies: Terrestrial
• Lithofacies: Hypersthene hornblende andesite lava (A flow unit)
• Structures: Coloumnar joints

• Thickness: A few dozen - 200 m or thicker
• Running distance: 10 km or more

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

• Distribution: Hirotomeno - Hattogawa river - Tomieda - Sengokuiwa - Byobuiwa - Takitani, Wakasa city, Yazu county, Tottori pref.

• Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)