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Amino Formation

• Coherent formation
• Miocene (15 Ma, K-Ar)
• Contemporaneous heterotopic facies: Muraoka Formation

• Sedimentary facies: Marine
• Lithofacies: Andesite, Rhyolite
• Lithofacies (Top): Dacitic welded tuff
• Lithofacies (Upper): Dacitic tuff
• Lithofacies (Middle): Shale
• Lithofacies (Lower): Sandstone
• Lithofacies (Bottom): Conglomerate

• Thickness: 920 m
• Upper limit: Unconformity (Tango Formation)
• Lower limit: Conformity (Toyooka Formation), Unconformity (Miyazu Granite)

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

• Distribution: Kumihama - Amino, Kyotango city, Kyoto pref.; Ine city, Yosa county, Kyoto pref.

• Sakiyama et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.1-20 DOI
• Utada (2008) Jour. Geol. Soc. Japan, vol.114, no.5, pp.231-245 DOI