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Sunagohara Formation Ministry of Economy, Trade and Industry, 1970

• Type locality: Takiya river, Nishiyama hot spring - Kurosawa, Sunagohara, Yanaizu city, Kawanuma county, Fukushima prefecture
• Volcanic rocks
• middle Pleistocene (ca. 0.3 Ma)
• Correlation: Todera Formation
• Intruded by (Upper): Yunotake Rhyolite

• Sedimentary facies (Upper): Lacustrine
• Lithofacies (Upper): Conglomerate, Sandstone, Siltstone
• Lithofacies (Upper, Minor): Breccia
• Lithofacies (Lower): Rhyolite lapilli tuff, Tuff
• Sedimentary structures (Upper): Parallel stratification, Ripple stratification, Graded bedding, Reversed graded bedding

• Thickness: ca. 150 m or thinner
• Lower limit: Unconformity (Takizawagawa Formation, Higashiomata Formation, Ninosawa Formation, Yuzuritoge Formation, Shiotsubo Formation, Iriyamazawa Formation, Fujitoge Formation)

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

• Distribution: Fukushima pref.

• Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)