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Kan-onji Granite (Noda et al., 2017)

Invalid synonym: Kan-onji Plutonic Rocks

• Type locality: Mount Kotohikiyama, Kanonji city, Kagawa prefecture
• Plutonic rocks
• Cretaceous (94.5, 80.5 Ma, K-Ar; 86.0 Ma, FT; 89.8 Ma, U-Pb)
• Intruded by: Porphyritic granite dikes, Spherulitic rhyolite dikes, Dacite dikes, Diorite dikes, Basaltic andesite dikes

• Lithofacies: Tholeiite series
• Lithofacies: Hornblende biotite granodiorite, Biotite granite, Hornblende biotite granite

• Upper limit: Unconformity (Saita Formation, Koda Formation, Yakeo Formation, Takase Formation, Shiroyama Formation, Hiketa Formation, Ishido Volcaniclastic Rock Member, Tsukumoyama Volcanic Rock Member, Maruyama Volcanic Rock Member, Northern marginal facies, Higher and Lower Terrace Deposits, Lower Terrace Deposits)

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Mount Kotohikiyama - Takaya town - Maruyama, Kanonji city, Kagawa pref.; Saita - Saitagawa river - Koso - Hijidai - Samata - Kurokawa - Koda, Mitoyo city, Kagawa pref.; Mount Ryuozan - Soda - Shiota - Dokigawa river, Manno city, Nakatado county, Kagawa pref.; Kashiwabara, Ayagawa city, Ayauta county, Kagawa pref.

• Noda et al. (2021) Geology of the Ikeda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 150p. (in Japanese with English abstract 5p.)
• Noda et al. (2017) Geology of the Kan-onji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 96p. (in Japanese with English abstract 4p.)