[ Top ] [ Japanese ]
Idoirisawa Member Shibata et al., 1976
- Type locality: Hakuba city, Kitaazumi county, Nagano prefecture
- Coherent formation
- Pliocene
- Sedimentary facies: Shallow marine
- Lithofacies: Interbedded sandstone and mudstone, Sandstone, Conglomerate
- Sedimentary structures (Middle): Slump structures
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hakuba city, Kitaazumi county, Nagano pref.
- Kato et al. (1989) Geology of the Omachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 7p.)