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Sakaino Formation (Yoshida, 1975) Matsuura et al., 1995
Invalid synonym: Sakaino Welded Tuff
- Lithofacies: Biotite rhyolite welded tuff
- Lithofacies (Minor): Tuff, Tuffaceous sandstone, Mudstone
- Thickness: ca. 350 - 700 m
- Distribution (East - West): ca. 9 km
- Distribution (South - North): ca. 3 km
- Upper limit: Abut unconformity (Sasori Tuff Breccia)
- Lower limit: Unconformity (Tamaze Formation)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kizu - Manzen, Inagawa city, Kawabe county, Hyogo pref.; Sakaino - Lake Sengari-suigenchi - Mount Furubozan - Kirihata, Takarazuka city, Hyogo pref.; Kuwahara - Toishigawa river - Yamada, Sanda city, Hyogo pref.
- Matsuura et al. (1995) Geology of the Hirone District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 110p. (in Japanese with English abstract 6p.)
- Kurimoto et al. (1993) Geology of the Sasayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
- Ozaki and Matsuura (1988) Geology of the Sanda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)