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Takanokura Formation Yamamoto et al., 1989

• Type locality (Upper): Niida river, Ohara, Haramachi ward, Minamisoma city, Fukushima prefecture
• Type locality (Lower): Takanokura, Haramachi ward, Minamisoma city, Fukushima prefecture
• Volcanic rocks
• Early Cretaceous, Hauterivian (121 Ma, K-Ar)
• Intruded by: Early Cretaceous granites
• Correlation: Kakkoyama Formation?

• Lithofacies (Upper): Clinopyroxene hornblende andesite, Hornblende andesite, Biotite hornblende andesite, Hornblende biotite dacite, Biotite dacite
• Lithofacies (Upper): Calc-alkaline series
• Lithofacies (Upper): Submarine lava, Volcanic conglomerate, Pyroclastic rocks
• Lithofacies (Lower): Biotite rhyolite
• Lithofacies (Lower): Pyroclastic flow deposit
• Lithofacies (Lower): Tuff breccia, Lapilli tuff
• Sedimentary structures (Upper): Graded bedding, Reversed graded bedding, Low angle cross stratification

• Thickness: 1,500 m or thicker
• Thickness (Upper): 1,000 m or thicker
• Thickness (Lower): 500 m or thicker

• Distribution: Ohara - Takanokura - Nitta river, Haramachi ward, Minamisoma city, Fukushima pref.

• Yanagisawa et al. (1996) Geology of the Somanakamura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 9p.)
• Kubo et al. (1990) Geology of the Haramachi and Omika District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)