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Hap-2 Tephra Sawaguri and Kurokawa, 1986
Abbr.: Hap-2
- Type locality: Kunisawa river - Ishikawa pass, Oguni town, Nagaoka city, Niigata prefecture
- Tephra
- Pliocene - Pleistocene (ca. 2.4 Ma)
- Correlation: Hrp
- Lithofacies: Rhyolite pumiceous volcanic ash flow deposit (more than 4 units)
- Sedimentary structures: Cross stratification, Parallel stratification, Convolute lamination, Graded bedding
- Hap Tephra
- [ Upper ]
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- Hap-3
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- Hap-2
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- Hap-1
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kunisawa river - Ishikawa pass, Oguni town, Nagaoka city, Niigata pref.; Jorakuji, Izumozaki city, Santo county, Niigata pref.; Magaritani, 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.)
- Kobayashi et al. (1993) Geology of the Izumozaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 4p.)
- Kobayashi et al. (1989) Geology of the Okanomachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 112p. (in Japanese with English abstract 5p.)