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Hijirikawa Mudstone Member

• Coherent formation
• middle - late Miocene
• Correlation: Sugata Mudstone Member

• Lithofacies: Silty mudstone
• Lithofacies (Minor): Sandstone, Tuff

• Thickness: ca. 700 m
• Upper limit: Interfingered (Shikinami Alternation of Sandstone and Mudstone Member)
• Lower limit: Conformity (Ogume Sandstone Member)

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

• Distribution: Hijirikawa, Hodatsushimizu city, Hakui county, Ishikawa pref.
• Fossils: Sponges (Spicles, Makiyama chitanii), Diatoms

• Imai et al. (1966) Geology of the Ochigata and Abugashima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 67p. (in Japanese with English abstract 4p.)