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Gtp Tephra Kurokawa et al, 1987
Abbr.: Gtp
- Type locality: River mouth of Gomoto river, Teradomari, Nagaoka city, Niigata prefecture
- Tephra
- middle Miocene - early Pliocene (6.28 Ma, FT)
- Correlation: Betsuyama Tuff
- Lithofacies: Pumiceous tephra
- Gtp Tephra
- [ Upper ]
- --------------
- GtpC
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- GtpB
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- GtpA
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Gomoto river, Teradomari, Nagaoka city, Niigata pref.; Jozo pass, Kashiwazaki city, Niigata pref.
- Kobayashi et al. (2002) Geology of the Sanjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 98p. (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.)