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Kasamatsuyama Formation

• Volcanic rocks
• Miocene

• Lithofacies: Andesitic pyroclastic rocks

• Upper limit: Unconformity (Yokoyama Formation)
• Lower limit: Unconformity (Plutonic rocks)

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

• Distribution: Utsunomiya hills, Tochigi pref.

• Hayashi et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.3, pp.141-144 DOI