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Hinata Formation Tochigi prefecture, 1977

• Volcanic rocks
• early Miocene (17.3 - 15.3 Ma, K-Ar)
• Correlation: Kazamiyamada Formation

• Lithofacies: Basalt, Andesite lava, Pyroclastic rocks

• Thickness: several - 200 m or thicker
• Upper limit: Unconformity (Momiyama Formation)

• Distribution: Kurokawa river, Shimotakeshi town, Kanuma city, Tochigi pref.

• Yoshikawa et al. (2010) Geology of the Utsunomiya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 6p.)