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Kawaguchi Formation

• Type locality: Kawaguchi - Shirakawaguchi - Nekobo, Miyoshi city, Tokushima prefecture
• High P/T metamorphic rocks
• Protolith: Northern Shimanto Belt
• Deposition: Late Cretaceous (82 Ma or younger, U-Pb)
• Correlation: lower Iyo Unit

• Metamorphic facies: Chlorite
• Lithofacies: Pelitic schist
• Lithofacies (Minor): Psammitic schsit, Greenschsit, Siliceous schist

• Thickness: 500 - 1,500 m
• Upper limit: Thrust fault
• Lower limit: Thrust fault

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

• Distribution: Oboke valley - Iyagawa river - Shirakawa - Mount Tsurugisan - Mount Ryugatake - Mount Kunimiyama - Yamaburo - Nemuridani - Nishiu - Kawaguchi - Shirakawaguchi - Nekonbo - Kamimyo - Shimomyo - Oiya - Zentoku - Minamihiura, Miyoshi city, Tokushima pref.; Dozangawa river - Shingu - Mount Sanbojisan, Shikokuchuo city, Ehime pref.

• Endo and Yokoyama (2019) Geology of the Motoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 100p. (in Japanese with English abstract 4p.)
• Otoh et al. (2010) Jour. Geol. Soc. Japan, vol.119, No.2, pp.333-346 DOI
• Okamoto et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.37-49 DOI
• Aoki et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.5, pp.171-183 DOI
• Kojima and Mitsuno (1966) Kawaguchi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 17p. (in Japanese with English abstract 7p.)
• Doi (1964) Mishima, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 31p. (in Japanese with English abstract 6p.)