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Hinase Formation Sato et al., 2016

• Type locality: Hinase - Sogotao pass, Hinase town, Bizen city, Okayama prefecture
• Volcanic rocks
• Late Cretaceous (85.6 Ma, U-Pb)
• Intruded by: Nagashima Granite, Yotsujiyama Granite, Granite, Rhyolite sills

• Sedimentary facies: Terrestrial
• Sedimentary facies: Caldera-fill deposit
• Sedimentary facies (Upper): Post-caldera stage
• Sedimentary facies (Lower): Large scale pyroclastic flow of caldera forming stage (Some flow units)
• Lithofacies (Upper): Dacite - Rhyolite tuff, Rhyolite tuff
• Lithofacies (Lower): Rhyolite welded tuff, Tuff, Tuff breccia

• Thickness: 350 - 600 m or thicker
• Distribution (East - West): 13 km
• Distribution (South - North): 12.5 km
• Upper limit: Unconformity (Daiyama Welded Lapilli Tuff Member, Ako Formation, Kibi Group)
• Lower limit: Unconformity (Mushiage Unit, Goishigawa Unit)

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

• Distribution: Hinase - Sogotao pass - Inbe - Isakatoge pass - Yokejigoshi, Bizen city, Okayama pref.; Mount Nishiohirasan - Higashiohirasan - Nunohama port - Yokoshima island - Nabeshima island - Mount Shiroyama, Setouchi city, 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.)
• Sato et al. (2016) Geology of the Banshu-Ako District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 68p. (in Japanese with English abstract 3p.)