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Kanigawa Formation Nakajima et al., 1981

• Type locality: Kanigawa, Kamogawa city, Chiba prefecture
• Coherent formation
• middle Miocene
• Correlation: upper Sakuma Formation, Nabuto Formation

• Sedimentary facies: Marine
• Depth of water: Deep sea
• Lithofacies (Upper): Shale
• Lithofacies (Upper, Minor): Sandstone, Tuff
• Lithofacies: Sandstone, Sandy siltstone
• Lithofacies (Minor): Shale

• Thickness: 320 - 470 m or thicker
• Upper limit: Conformity (Kinone Formation)

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

• Distribution: Kanigawa - Daisaku, Kamogawa city, Chiba pref.
• Fossils (Shellfish): Pharax izumoensis jobanicus, Yoldia laudabilis

• Takahashi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.8, pp.375-395, DOI
• Sawada et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.5, pp.206-222 DOI
• Nakajima et al. (1981) Geology of the Kamogawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 7p.)