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Mineyama Formation (Yamamoto et al., 2002) Yoshikawa et al., 2005

• Type locality: Kuroiwadaki fall, Okawachi, Kamikawa city, Kanzaki county, Hyogo prefecture
• Volcanic rocks
• Large scale caldera-fill deposit
• Late Cretaceous (64.9 Ma, K-Ar)
• Intruded by: Sakanotsujitoge Body, Tonominekogen Body, Dacite dikes

• Lithofacies (Upper): Andesite lava
• Lithofacies (Lower): Andesite - Dacite welded lapilli tuff, Tuff breccia, Tuff
• Sedimentary structures: Columnar joints

• Thickness: ca. 700 m
• Lower limit: Unconformity (Maizuru Belt, Yamasaki Formation, Okawachi Formation)

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

• Distribution: Mineyama kogen - Fukuchigawa river - Mount Hiraishiyama - Minamioda, Okawachi, Kamikawa city, Kanzaki county, Hyogo pref.; Izasa, Kamikawa city, Kanzaki county, Hyogo pref.

• Yoshikawa et al. (2005) Geology of the Ikuno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 3p.)
• Yamamoto et al. (2002) Geology of the Yamasaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 4p.)