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Nibori Granite Mitsuno and Omori, 1965

• Plutonic rocks
• Cretaceous (85.9 - 83 Ma)
• Intruded by: Quartz porphyry dikes, Porphyrite dikes, Rhyolite dikes
• Intruded in: Nigaki Group, Dodozan Formation, Omoriyama Formation, Mantomi Unit, Ejiri Unit

• Sedimentary facies: Batholith
• Lithofacies: Hornblende biotite granite - Granodiorite
• Lithofacies (Marginal): Hornblende biotite diorite

• Distribution (East - West): ca. 12 km
• Distribution (South - North): ca. 18 km
• Magnetic susceptibility: 1 - 3 x 10^-3 SI or less
• Upper limit: Unconformity (Wake Formation, Kamosaki Formation, Kibi Group)

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

• Distribution: Saekitoge pass - Tonodani - Mount Shinkojiyama - Mount Takioyama - Saikoji - Mount Shakurenjiyama - Oishihakodatami shrine - Heida - Kamoshimo - Sawahara, Akaiwa city, Okayama pref.; Kozaka - Mount Kanekoyama, Wake city, Wake county, Okayama pref.

• Sato et al. (2022) Geology of the Wake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 106p. (in Japanese with English abstract 4p.)
• Mitsuno and Omori (1965) Susai, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 59p. (in Japanese with English abstract 17p.)