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Akitsu Formation

• Coherent formation
• Eocene - Oligocene (30.3 Ma, FT)

• Sedimentary facies: Fluvial
• Lithofacies:

• Distribution: Hiroshima 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.)
• Sato et al. (2016) Geology of the Banshu-Ako District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 68p. (in Japanese with English abstract 3p.)