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Hachibuse Sandstone Member

Invalid synonym: Kotake Sandstone Member

• Type locality: Toyama prefecture
• Coherent formation
• Miocene
• Contemporaneous heterotopic facies: Kawata Sandstone Member, Kojiro Tuffaceous Sandstone Member

• Lithofacies (Upper): Sandstone
• Lithofacies (Upper, Minor): Mudstone, Interbedded sandstone and mudstone
• Lithofacies (Lower): Andesitic sandstone
• Lithofacies (Lower, Minor): Mudstone, Conglomerate

• Thickness: ca. 700 m
• Upper limit: Conformity (Futakami Siltstone Member)

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

• Distribution: Futakamiyama hills - Mount Taishigadake, Takaoka city - Himi city, Toyama pref.; Ebisaka - Shibuya river - Amaharashi seashore, Takaoka city, Toyama pref.
• Fossils: Balanus sp.
• Fossils (Shellfishes): Acila submirabilis, Cardium sp., Chlamys notoensis, Clavatula sp., Lucina acutilineata, Nuculana sp., Thyasira gouldii

• Sakamoto (1963) Toyama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 45p. (in Japanese with English abstract 6p.)