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Skwc Tephra Kurokawa and Higuchi, 2004
Synonym.: Skwc
- Type locality: Sakamoto river, Sanjo city, Niigata prefecture
- Tephra
- Pliocene (ca. 3 Ma)
- Correlation: Nkwc
- Distribution: Sakamoto river, Sanjo city, Niigata pref.
- Kudo et al. (2011) Geology of the Kamo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 162p. (in Japanese with English abstract 4p.)