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Haigamine Formation (Higashimoto et al., 1985) Matsuura, 2001

• Type locality (H6, H7, H8): Mount Haigamine - Nikyukyo valley, Kure city, Hiroshima prefecture
• Type locality (H5): Sotoomote - Mebarusaki, Osakikamijima city, Toyota county, Hiroshima prefecture
• Type locality (H5, Rhyolite lava): Mount Kannomineyama, Osakikamijima city, Toyota county, Hiroshima prefecture
• Type locality (H1, H2, H3, H4): Kubi - Okitomo, Yutaka town, Kure city, Hiroshima prefecture
• Volcanic rocks
• Late Cretaceous
• Intruded by: Toyoshima Granodiorite, Ojizo Granite, Kure Granite, Biotite rhyolite dikes, Biotite granite porphyry dikes, Diorite porphyry dikes

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

• Thickness: 1,000 - 2,500 m
• Distribution (East - West): ca. 34 km
• Distribution (South - North): ca. 31 km
• Upper limit: Abut unconformity (Norosan Welded Tuff), Unconformity (Akitsu Formation)
• Lower limit: Unconformity (Okitomo Formation)

------ 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.; Osakikamijimacity, Toyota county, Hiroshima pref.; Osakishimojima island - Toyoshima island - Kamikamagarijima island, Kure city, Hiroshima pref.

• Matsuura (2001) Geology of the Mitsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 58p. (in Japanese with English abstract 4p.)
• 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.)