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Akechi Formation (Kimiya, 1971) Yamasaki et al., 2020

• Type locality: Okute, Akechi town, Ena city, Gifu prefecture
• Coherent formation
• Miocene

• Sedimentary facies: Valley-fill deposit
• Sedimentary facies: Channel-fill deposit
• Lithofacies: Conglomerate
• Lithofacies (Minor): Sands, Silt

• Thickness: ca. 20 - 180 m
• Upper limit: Unconformity (Mashizume Formation)
• Lower limit: Unconformity (Ryoke Metamorphic Rocks, Younger Ryoke Granitoids, Iwamura Group)

• Distribution: Okute - Nakazawa - Higashikata - Yokomichi - Kushihara - Arai - Sugino - Obata, Akechi town, Ena city, Gifu pref.; Kinomi pass, Kamiyahagi town, Ena city, Gifu pref.; Tazawa, Yamaoka town, Ena city, Gifu pref.; Subuchi town - Shiroyama park - Asahikogen, Toyota city, Aichi pref.

• Yamasaki et al. (2020) Geology of the Akechi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 120p. (in Japanese with English abstract 5p.)