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Furuiwaya Formation (Kihara, 1985)

Invalid synonym: Furuiwaya Breccia Member, Shimosakabatoge Formation, Shimosakabatoge Conglomerate Member

• Coherent formation

• Sedimentary facies: Terrestrial
• Sedimentary facies: Alluvial fan
• Sedimentary facies: Debris flow
• Sedimentary facies (Minor): Braided river, Lacustrine
• Lithofacies: Conglomerate
• Lithofacies (Minor): Sandstone, Mudstone Glauconite
• Sedimentary structures: Channel structure, Cross-stratification, Imbricate structure

• Thickness: 200 - 300 m
• Upper limit: Conformity
• Lower limit: Unconformity (Sanbagawa Metamorphic Rocks, Hiwadatoge Formation, Izumi Group)

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

• Distribution: Shimosakaba pass - Tomishige - Furuiwaya - Yurano, Kumakogen city, Ehime pref.; Senba, Tobe city, Ehime pref.
• Fossils (Gravels from Hiwadatoge Formation): Bivalves (Ostrea), Limpets, Bryozoa, Corals, Sponges

• Nara et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.7, pp.471-489 DOI
• Ochi et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.5, pp.165-179 DOI