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Suzurankogen Basalt Yamada and Kobayashi, 1988

• Volcanic rocks
• Pleistocene (2.12 Ma, K-Ar)
• Intruded in: Nohi Rhyolites

• Lithofacies: High-alumina
• Lithofacies: Olivine basalt, Augite olivine basalt lava
• Lithofacies (Lower): Scoria
• Structures: Platy joint, Columnar joint

• Thickness: ca. 50 - 100 m
• Thickness (Lower): 0 - 15 m
• Distribution: ca. 5 - 15 km²
• Upper limit: Unconformity (Ontake volcano)
• Lower limit: Unconformity (Tochiharatani Granodiorite Porphyry, Okozuritani Granodiorite Porphyry, Nohi Rhyolites, Nyukawa Pyroclastic Rocks)

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

• Distribution: Suzurankogen - Suzurandani valley - Ginemondani valley - Mount Ohirayama - Hogandani? valley - Nagase - Sawaradani valley - Tochiharatani valley - Matsuodani valley - Ogaito - Wakatochidani valley, Osaka town, Gero city, Gifu pref.; Atagasudani valley, Kuguno town, Takayama city, Gifu pref.

• Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)