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As-K Tephra

Abbr.: As-K

• Tephra
• Pleistocene (15 ka)

• Lithofacies:

• Host: Shirone Formation

• Distribution: Niigata pref.

• Kamoi et al. (2016) Geology of the Niigata and Uchino District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 90p. (in Japanese with English abstract 2p.)