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Otani Lavas Ota and Katada, 1955

• Volcanic rocks
• Middle Pleistocene (0.75 Ma, K-Ar)

• Lithofacies: Lava, Volcaniclastic rocks
• Lithofacies: Orthopyroxene-clinopyroxene andesite

• Thickness: 30 m or thicker
• Upper limit: Unconformity
• Lower limit: Unconformity

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

• Distribution: Otani Fudo - the left bank of Yonago river, Suzaka city, Nagano pref.

• Nishiki et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.3, pp.89-103 DOI
• Ota and Katada (1955) Suzaka, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 6p.)