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Nyudozaki Igneous Rocks Miyagi and Uruno, 1959

• Type locality: Cape Nyudo, Kitaura, Oga city, Akita prefecture
• Caldera?
• Volcanic rocks
• Late Cretaceous (72.0, 71.5 Ma, U-Pb; 58.8 Ma, FT; 38, 30 Ma, K-Ar)
• Contemporaneous heterotopic facies: Akashima Lavas

• Sedimentary facies: Pyroclastic flow deposit
• Lithofacies: Orthopyroxene-clinopyrocene dacite welded volcanic lapilli tuff

• Upper limit: Unconformity (Butaijima Basalt Member)
• Lower limit: Conformity (Akashima Lavas)

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

• Distribution: Cape Nyudo, Kitaura, Oga city, Akita pref.

• Kano et al. (2011) Geology of the Toga and Funakawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 127p. (in Japanese with English abstract 4p.)
• Ohguchi et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.17-32 DOI
• Fujimoto et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.51-74 DOI