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Upper part

Invalid synonym: Miike Formation

• Coherent formation
• Pleistocene (ca. 0.85 - 0.6 Ma)
• Correlation: Middle part of Tanaka Formaiton

• Sedimentary facies: Fluvial, Lacustrine
• Sedimentary facies (Minor): Marine
• Lithofacies: Gravels, Sands
• Sedimentary structures: Trough cross-stratification, Parallel stratification, Channel structure

• Upper limit: Top of Ma 6
• Upper limit: Conformity (Upper Most part)
• Lower limit: Bottom of Ma 3
• Lower limit: Unconformity (Lower part)

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

• Distribution: Tenjin town, Takatsuki city, Osaka pref.; Saikyo ward, Kyoto city, Kyoto pref.; Komyoji, Nagaokakyo city, Kyoto pref.
• Tephra: Ss-Az, Sayama, Imakuma, Hacchoike, Toga, Sakura, Guminoki, Kasuri, Wada, Hatta
• Key bed (Marine clay): Ma 3, Ma 4, Ma 5, Ma 6

• Hongo (2009) Jour. Geol. Soc. Japan, vol.115, no.2, pp.64-79 DOI
• Miyachi et al. (2005) Geology of the Kyoto-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 90p. (in Japanese with English abstract 4p.)
• Miyachi et al. (2001) Geology of the Osaka-Tohokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 130p. (in Japanese with English abstract 6p.)
• Huzita and Kasama (1982) Geology of the Osaka-Seihokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 112p. (in Japanese with English abstract 8p.)