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Am19 Tephra

Abbr.: Am19

• Tephra
• Miocene (11.7 Ma, FT)

• Lithofacies: Tephra

• Host: Amatsu Formation

• Distribution: Chiba pref.

• Nakajima and Watanabe (2005) Geology of the Futtsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 102p. (in Japanese with English abstract 8p.)