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Onigatsura Volcanic Rocks Takahashi et al., 2004

• Volcanic rocks
• Stratovolcano
• early Pleistocene

• Lithofacies: Olivine hypersthene augite andesite, Hypersthene augite andesite
• Lithofacies: Lava (more than 3 - 4 flow units), Volcanic breccia, Tuff breccia

• Thickness: 400 m or thicker

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

• Distribution: Mount Kitadake - Mount Onigatsura - Mount Minamidake - Rokujurigoe pass, Niigata pref. - Fukushima pref.

• Takahashi et al. (2004) Geology of the Suhara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 80p. (in Japanese with English abstract 4p.)