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Ohatagawa Green Tuff Member

• Volcanic rocks
• Miocene
• Contemporaneous heterotopic facies (Upper): Kamanosawa Tuff, Sandstone and Shale Member
• Correlation: Yunokawa Green Tuff Member, Yunokawa Formation

• Lithofacies: Andesitic tuff, Andesitic tuff breccia
• Lithofacies (Minor): Altered andesite, Conglomerate, Sandstone, Shale

• Upper limit: Conformity (Yunomatagawa Dacitic Tuff Member)

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

• Distribution: Yagen hot spring, Yagen, Ohata town, Mutsu city, Aomori
• Fossils: Anadara cf. ninohensis, Barbatia sp., Cardita siogamensis, Chlamys arakawai, Chlamys kaneharai, Glycymeris vestitoides, Luciniscus cf. yokoyamai, Patinopecten kimurai, Taras ustus, Acmaea sp., Pecten swifti, Pecten paraplepejus, Pecten kaneharai, Lima goliath yagenensis, Lima sp., Saxidomus gigananteus

• Uemura (1962) Oma and Sai, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 6p.)
• Uemura and Saito (1957) Ohata, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 31p. (in Japanese with English abstract 8p.)