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Am98 Tephra

Abbr.: Am98

• Tephra
• Miocene

• Lithofacies: Scoria

• Host: Amatsu Formation
• Thickness: 30 cm or thicker

• 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.)