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Isumi 3 Terrace Deposits Utsunomiya and Ooi, 2019

• Coherent formation
• late Pleistocene (18 ka)

• Sedimentary facies: River terrace deposit
• Sedimentary facies: Debris flow deposit
• Lithofacies: Gravels, Sands

• Thickness: 1 - 2 m
• Upper limit: Unconformity (Tachikawa Loam)

• Distribution: Nakano, Otaki city, Isumi county, Chiba pref.; Kamifuse, Isumi city, Chiba pref.

• 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.)