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Takagawa Formation (Suzuki et al., 1972) Yamamoto, 1991

Invalid synonym: Kuromori Formation

• Type locality: Kurakawa river, Aizuwakamatsu city, Fukushima prefecture
• Volcanic rocks
• Collapse caldera-fill deposit
• Miocene
• Intruded by: Basalt

• Sedimentary facies: Lacustrine
• Sedimentary facies: Lava dome
• Lithofacies (Lacustrine): Sandstone, Conglomerate, Siltstone
• Lithofacies (Andesite): Andesite lava, Pyroclastic rocks
• Lithofacies (Intrusive rocks): Dacite, Andesite, Basalt
• Lithofacies (Debris avalanche): Breccia
• Sedimentary structures (Lacustrine): Graded bedding, Reversed graded bedding, Parallel stratification

• Thickness (Overall): ca. 700 m
• Thickness (Lacustrine): 20 - 250 m
• Thickness (Andesite): 100 m or thinner
• Lower limit: Abut unconformity (Kurakawa Formation, Higashiomata Formation), Unconformity (Oto Formation)

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

• Distribution: Kurakawa river, Aizuwakamatsu city, Fukushima pref.
• Fossils (Lacustrine): Plants

• Yamamoto (1999) Geology of the Tajima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 8p.)
• Yamamoto and Yoshioka (1992) Geology of the Wakamatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 5p.)