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Shigenosawa Andesite Member Ozawa et al., 1979

• Type locality: Shigenosawa, Iwaisawa, Higashiyuri, Yurihonjo city, Akita prefecture
• Volcanic rocks
• Miocene
• Contemporaneous heterotopic facies: Upper Iizawa Formation

• Lithofacies: Pyroxene andesite lava
• Lithofacies (Minor): Tuff breccia, Volcanic breccia, Lapilli tuff, Mudstone

• Thickness: 100 - 200 m

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

• Distribution: Shigenosawa, Iwaisawa, Higashiyuri, Yurihonjo city, Akita pref.

• Ozawa et al. (1979) Geology of the Asamai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 53p. (in Japanese with English abstract 4p.)