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G1 Bed
- Coherent formation
- Buried terrace deposit
- Basal conglomerate of Nishikanbara Formation
- Pleistocene (Last glacial period)
- Sedimentary facies: Freshwater (Diatoms)
- Sedimentary facies: Terrace gravel deposit (2 stages)
- Climate: Cold (Pollen)
- Lithofacies: Gravels
- G1 Bed
- [ Upper ]
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- Btg 1
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- Btg 2
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- Btg 3
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- Btg 4
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- [ Lower ]
- Nishikanbara Formation
- [ Upper ]
- ~~~~~~~~~~~~~~
- Main part
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- G1 Bed (Natural gas deposit)
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- [ Lower ]
- Kanbara Group
- [ Upper ]
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- G1 Bed (Natural gas deposit)
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- G2 Bed (Natural gas deposit)
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- G3 Bed (Natural gas deposit)
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- G4 Bed (Natural gas deposit)
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- G5 Bed (Natural gas deposit)
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Niigata pref.
- Fossils: Diatoms, Pollen (Abies sp.)
- Kamoi et al. (2016) Geology of the Niigata and Uchino District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 90p. (in Japanese with English abstract 2p.)