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Middle I Terrace Deposits

Invalid synonym: lower Kiyama Formation

• Coherent formation
• late Pleistocene

• Sedimentary facies: Marine
• Sedimentary facies (Lower): Inner bay
• Lithofacies (Upper): Gravels, Sands, Silt
• Lithofacies (Lower): Silt, Silty sands
• Lithofacies (Basal): Gravel-bearing sands
• Sedimentary structures (Lower): Upward fining, Bioturbation

• Thickness: ca. 10 - 20 m
• Thickness (Lower): 5 - 6 m
• Thickness (Basal): ca. 1 m
• Lower limit: Unconformity (Higher I Terrace Deposits, Higher II Terrace Deposits)

• Distribution: Kanayama, Mihama city, Mikata county, Fukui pref.; Kiyama - Oei, Wakasa city, Mikatakaminaka county, Fukui pref.
• Fossils (Lower): Whales
• Fossils (Lower, Shellfishes): Barnea (Umitakea) dilata, Macoma sp., Theora sp.

• Nakae et al. (2002) Geology of the Nishizu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 90p. (in Japanese with English abstract 3p.)