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Yagane Formation Suzuki et al., 2009

• Type locality: Sugitani - Yagane, Okayama city, Okayama prefecture
• Coherent formation
• late Oligocene (25.6, 24.6 Ma, FT)

• Sedimentary facies: Terrestrial
• Lithofacies (Upper): Conglomerate
• Lithofacies (Middle): Mudstone, Sandstone
• Lithofacies (Lower): Conglomerate

• Thickness: 35 m or thinner
• Altitude: 220 - 255 m
• Upper limit: Unconformity (Nichiôji Formation)
• Lower limit: Unconformity (Tomiyoshi Formation)

• Distribution: Sugitani - Yagane - Nichioji, Okayama city, Okayama pref.

• Suzuki et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.139-151 DOI