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Uwano Formation Hanzawa, 1954

Invalid synonym: Uwagaya Formation

Uwano is an old name of Uwagaya, Minamisoma city, Fukushima pref.

• Type locality: Yumiorezawa creek - Kamimano river, Minamisoma city, Fukushima prefecture
• Coherent formation
• Early Permian (Fusulinids)
• Correlation: Sakamotozawa Formation

• Sedimentary facies: Marine
• Lithofacies (Upper): Sandy shale, Shale
• Lithofacies (Upper, Minor): Limestone, Siliceous tuff
• Lithofacies (Lower): Sandy shale, Shale, Sandstone
• Lithofacies (Bottom): Sandstone, Conglomerate
• Sedimentary structures: Parallel stratification

• Thickness: ca. 250 - 800 m
• Thickness (Upper): 430 m
• Thickness (Lower): 370 m
• Upper limit: Conformity (Oashi Formation)
• Lower limit: Unconformity (Tateishi Formation, Mano Formation, Ainosawa Formation, Matsugadaira Metamorphic Rocks)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Yumiorezawa creek - Kamimano river - Ainosawa - Hebiishizawa creek, Minamisoma city, Fukushima pref.; Nitta river, Haramachi ward, Minamisoma city, Fukushima pref.
• Fossils: Crinoids, Radiolarians
• Fossils (Fusulinids): Chalaroschwagerina? sp., Pseudofusulina? sp., Pseudoschwagerina sp., Schubertella sp.

• Yanagisawa et al. (1996) Geology of the Somanakamura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 9p.)
• Kubo et al. (1990) Geology of the Haramachi and Omika District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)