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Koeji Volcanic Ash

• Type locality: Yagiyama zoo, Taihaku ward, Sendai city, Miyagi prefecture
• Volcanic rocks
• Pleistocene

• Lithofacies: Argillaceous tuff, Pumiceous tuff

• Thickness: 2 - 4 m
• Lower limit: Conformity (Futatsuzawa Gravels)

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

• Distribution: Yagiyama zoo, Taihaku ward, Sendai city, Miyagi pref.

• Miyamoto et al. (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.27-46 DOI
• Kitamura et al. (1986) Geology of the Sendai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 134p. (in Japanese with English abstract 9p.)