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Maejima Formation

• Coherent formation
• Eocene - Oligocene
• Correlation: Kibi Group

• Distribution: Ushimado town, Setouchi city, Okayama pref.

• Sato et al. (2022) Geology of the Wake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 106p. (in Japanese with English abstract 4p.)
• Suzuki et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.139-151 DOI