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Tsugeno Formation (Shiida et al., 1967) Nishioka et al, 2001
Invalid synonym: Tsugeno Group
- Type locality: Nara prefecture
- Coherent formation
- middle Miocene
- Correlation: Soni Formation
- Lithofacies: Tuffaceous sandstone, Mudstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tsuge, Nara city, Nara pref.; Tenri city, Nara pref.; Sakurai city, Nara pref.
- Sato et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.53-69 DOI
- Nishiwaki and Okudaira (2007) Jour. Geol. Soc. Japan, vol.113, no.6, pp.249-265 DOI
- Nishioka et al. (2001) Geology of the Sakurai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 141p. (in Japanese with English abstract 5p.)
- Nishioka et al. (1998) Geology of the Nabari District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 5p.)