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Akakura Tuff

• Tephra
• Miocene - Pliocene (3.3 Ma, FT)

• Lithofacies:

• Host: Higashigawa Formation

• Distribution: Niigata pref.

• Takeuchi et al. (2000) Geology of the Matsunoyama Onsen District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 76p. (in Japanese with English abstract 5p.)