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Anyobo Sandstone and Mudstone Alternation Member

• Type locality: Toyama prefecture
• Coherent formation
• early Pleistocene
• Correlation: Omma Sandstone Member, lower Mita Formation

• Lithofacies (Upper): Interbedded sandstone and siltstone
• Lithofacies (Lower): Siltstone
• Sedimentary structures (Top): Wave ripples

• Thickness: ca. 45 m
• Thickness (Upper): ca. 30 m
• Thickness (Lower): ca. 15 m
• Upper limit: Conformity (Chokeiji Sand Member)
• Lower limit: Top of O₂ Tephra
• Lower limit: Unconformity (Nishitoyama Sandstone Member)

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

• Distribution: Kurehayama hills - Teramachi town - Tomochika, Toyama city, Toyama pref.
• Fossils (Shellfishes): Patinopecten kurosawaensis

• Tamura et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.1-20 DOI
• 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.)