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Kamogawa Formation (Furuta and Kawata, 1987) Ozaki and Matsuura, 1988

Invalid synonym: Kamogawa Pumice Tuff, lower Hie Formation

• Type locality: Shikano town - Tsukaguchi town - Lake Shinike - Kamikamogawa - Shimokamogawa - Hiraki mine, Nishiwaki city, Hyogo prefecture
• Volcanic rocks
• Late Cretaceous
• Interfingered: Akusa Formation
• Intruded by: Diorite porphyry dike, Granite porphyry dike, Biotite-bearing rhyolite welded lapilli tuff dike
• Correlation: Rurikei Formation, Tamaze Formation
• Correlation (Lower): Takedao Formation

• Sedimentary facies (Minor): Lacustrine
• Lithofacies: Rhyolite - Dacite welded tuff, Lapilli tuff, Tuff, Pumice tuff
• Lithofacies (Minor): Tuffaceous conglomerate, Rhyolite lava, Tuffaceous sandstone, Tuffaceous mudstone

• Thickness: 200 - 2,400 m or thicker
• Upper limit: Unconformity (Hiraki Welded Tuff, Toishigawa Mudstone and Sandstone Member, Yokawa Formation, Myokenzan Formation, Yasudagawa Formation)
• Lower limit: Unconformity (Kaibara Formation, Jonan Complex, Kochi Complex)

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

• Distribution: Shikano town - Tsukaguchi town - Lake Shinike - Kamikamogawa - Shimokamogawa - Hiraki mine - Sumiyoshi town, Nishiwaki city, Hyogo pref.; Nishiashida, Aogaki town, Tamba city, Hyogo pref.; Shinjo - Narimatsunishi - Shingo, Hikami town, Tamba city, Hyogo pref.; Ishido - Okuyama, Sannan town, Tamba city, Hyogo pref.; Aguta, Kaibara town, Tamba city, Hyogo pref.; Kuroishi dam - Mount Shiragadake, Tambasasayama city, Hyogo pref.; Kamimikusa - Lake Tojoko - Takino, Kato city, Hyogo pref.; Shimomihara - Kumanobe - Nishiwaki - Shidehara - Nakanoma, Taka city, Taka 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.)
• Kurimoto et al. (1993) Geology of the Sasayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
• Ozaki and Matsuura (1988) Geology of the Sanda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)