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Ochiaigawa Shell Bed

• Coherent formation
• Holocene (8,510 - 7,370 calBP)
• Correlation: Nittano Shell Bed

• Lithofacies: Mud

• Thickness: 2 m or thicker

• Distribution: Ochiai river, Shimohara, Isumi city, Chiba pref.
• Fossils (Shellfishes): Crassostrea gigas, Tegillarca granosa

• 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.)