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Hirono II Tephra Hashimoto, 1978MS ex Mitamura, 1993
- Lithofacies: Volcanic ash
- Distribution: Kyoto pref.
- Wakita et al. (2013) Geology of the Kyoto-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 124p. (in Japanese with English abstract 3p.)
- Ozaki et al. (2000) Geology of the Nara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 162p. (in Japanese with English abstract 5p.)