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Ubaishi Formation

• Type locality: Ubaishi, Sumita city, Kesen county, Iwate prefecture
• Volcanic rocks
• Early Cretaceous
• Correlation: Yamaya Formation

• Sedimentary facies: non-Marine
• Lithofacies: Volcanic rocks, Tuff

• Distribution: Ubaishi - Taneyama-kogen, Sumita city, Kesen county, Iwate pref.; Akazawa, Shiwa city, Shiwa county, Iwate pref.
• Fossils: Non-marine fossils

• Kawamura et al. (2013) Geology of the Hayachine San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)