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Abugawa Sandstone-Mudstone Member Imaoka et al., 2019

• Type locality: Mugitani bridge, Ato, Yamaguchi city, Yamaguchi prefecture
• Caldera lake of Ikumo caldera
• Coherent formation
• Late Cretaceous

• Sedimentary facies: Lacustrine
• Lithofacies: Tuffaceous sandstone, Sandstone, Tuffaceous siltstone, Mudstone, Interbedded tuffaceous sandstone and mudstone
• Lithofacies (Minor): Tuff

• Thickness: 3 - 20 m

• Upper limit: Conformity (Mugitanigawa Welded Tuff Member)
• Lower limit: Conformity (Yunose Welded Tuff Member)

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

• Distribution: Abugawa dam, Kawakami, Hagi city, Yamaguchi pref.; Mugitani river, Ato, Yamaguchi city, Yamaguchi pref.

• Imaoka et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.529-553 DOI