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Haigamine Formation

• Type locality: Mount Haigamine - Nikyukyo valley, Kure city, Hiroshima prefecture
• Volcanic rocks
• Late Cretaceous
• Intruded by: Hiroshima Granites
• Correlation: Kanashi Formation, Onagobata Formation

• Lithofacies (Upper): Dacite welded tuff
• Lithofacies (Middle): Rhyolite welded vitreous tuff
• Lithofacies (Middle, Minor): Dacite welded tuff, Tuffaceous sandstone, Mudstone, Lapilli tuff
• Lithofacies (Lower): Dacite welded tuff
• Lithofacies (Lower, Minor): Tuffaceous sandstone, Mudstone

• Thickness: 1,000 m or thicker
• Thickness (Upper): 100 - 150 m
• Thickness (Middle): 300 - 400 m
• Thickness (Lower): 600 m or thicker
• Upper limit: Abut unconformity (Norosan Welded Tuff)

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

• Distribution: Mount Haigamine - Mount Norosan - Mount Akozaka - Nikyukyo valley - Jinyama - Nigata - Kawajiri town - Uchinoumi - Onagobata, Kure city, Hirosihma pref.

• Takagi and Mizuno (1999) Geology of the Kaitaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 4p.)
• Higashimoto et al. (1985) Geology of the Kure District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 6p.)