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Jwg-2 Tephra
Abbr.: Jwg-2
- Type locality: Jorakuji, Izumozaki city, Santo county, Niigata prefecture
- Tephra
- Pliocene - Pleistocene
- Lithofacies: Vitreous volcanic ash
- Sedimentary structures: Graded bedding (3 units)
- Thickness: 63 cm
- Thickness (Upper unit): 30 cm
- Thickness (Middle unit): 8 cm
- Thickness (Lower unit): 25 cm
- Host: Nishiyama Formation
- Jwg Tephra
- [ Upper ]
- --------------
- Jwg-4
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- Jwg-3
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- Jwg-2
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- Jwg-1
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Jorakuji, Izumozaki city, Santo county, Niigata pref.
- 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.)