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Moribu Formation Isomi and Nozawa, 1956

Invalid synonym: Kurabashira Formation

A part is separated as Douden Formation.

• Type locality: Moribudani river, Moribu, Nyukawa town, Takayama city, Gifu prefecture
• Coherent formation
• Lower - Middle part: middle Permian, Capitanian - late Permian, Wuchiapingian (263 - 256 Ma)
• Intruded by: Aplite
• Correlation: Oguradani Formation

• Lithofacies (Upper): Mudstone, Mudstone-dominant interbedded sandstone and mudstone
• Lithofacies (Middle): Sandstone
• Lithofacies (Lower): Sandy mudstone, Sandstone
• Lithofacies (Lower, Minor): Limestone
• Lithofacies (Bottom): Limestone, Conglomerate
• Sedimentary structures: Graded bedding

• Thickness (Overall): ca. 540 m
• Thickness (Upper): ca. 110 m
• Thickness (Middle): ca. 200 m
• Thickness (Lower): ca. 230 m
• Distribution (Width): several hundreds - ca. 1 km
• Distribution (Length): ca. 10 km
• Lower limit: Transitional (Arakigawa Formation), Conformity (Kamihirose Formation)

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

• Distribution: Moribudai river, Moribu - Kashihara, Nyukawa town Takayama city, Gifu pref.; Hongo - Rosse, Kamitakara town, Takayama city, Gifu pref.; Nakagiri town - Matsumoto town - Kamigiri town - Mount Mihakayama, Takayama city, Gifu pref.; Mumaya, Shokawa town, Takayama city, Gifu pref.
• Fossils (Bottom - Lower): Fusulinids (Monodiexodina sutchanica = Monodiexodina matsubaishi, Pseudofusulina vulgaris globosa)
• Fossils (Lower): Brachiopods (Yakovlevia kaluzinensis, Leptodus nobilis, Stenoscisma margaritovi)

• Suzuki et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.4, pp.307-322 DOI
• Kawada (1982) Geology of the Mikkamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 6p.)
• Nozawa et al. (1975) Geology of the Hida-Furukawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 9p.)
• Isomi and Nozawa (1957) Funatsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 43p. (in Japanese with English abstract 8p.)