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O16 Tephra

Abbr.: O16

Invalid synonym: O14

• Tephra
• Pleistocene

• Lithofacies: Tuff

• Host: Otadai Formation

• Distribution: 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.)