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Budo Formation

• Volcanic rocks
• early Miocene (22.4 Ma, FT)
• Correlation: Kitaoguni Formation

• Lithofacies: Biotite rhyolite
• Lithofacies: Pyroclastic flow deposit

• Distribution: Budo - Komogawa, Murakami city, Niigata pref.

• Yanagisawa and Yamamoto (1998) Geology of the Tamaniwa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 94p. (in Japanese with English abstract 4p.)