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Choja Terrace Deposits

Invalid synonym: Kuniyoshi Formation

• Coherent formation
• Holocene
• Correlation (Upper): Fukuhara Terrace Deposit

• Sedimentary facies (Upper): Fluvial
• Sedimentary facies (Lower): Marine
• Sedimentary facies (Upper): River flow, Flood plain
• Sedimentary facies (Lower): Beach ridges, Beach, Inner bay, Lagoon
• Lithofacies (Upper): Mud
• Lithofacies (Lower): Sands
• Sedimentary structures (Upper): Cross stratification

• Thickness: 3 - 10 m

• Distribution: Kuwata, Misaki town, Isumi city, Chiba pref.; Ohara - Wakayama, Isumi city, Chiba pref.
• Fossils: Trace fossils

• Utsunomiya and Ooi (2019) Geology of the Kazusa-Ohara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 127p. (in Japanese with English abstract 4p.)