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Yakuoji Siltstone and Sandstone Member Araki, 1960

Invalid synonym: Yakuoji Formation, Yakuoji Siltstone and Sandstone Member

• Type locality: Iga street, Katada town - Yakuoji town, Tsu city, Mie prefecture
• Coherent formation
• Miocene sediments related to the paleo Setouchi inner sea
• early Miocene

• Sedimentary facies: Marine
• Lithofacies: Mudstone, Interbedded sandstone and mudstone, Mudstone
• Sedimentary structures: Parallel stratification, Slump structures, Load cast

• Thickness: ca. 450 m
• Upper limit: Unconformity (Oyama Formation)
• Lower limit: Transitional (Chaya Sandstone and Mudstone Member)

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

• Distribution: Katada town - Yakuoji town, Tsu city, Mie pref.
• Fossils (Foraminifera): Globigerina angustiumbilicata, Globigerina connecta, Globigerina druryi, Globigerina falconensis, Globigerina foliata, Globigerina praebulloides praebulloides, Globigerina praebulloides pseudociperoensis, Globigerina woodi, Globigerinita glutinata, Globigerinoides japonicus, Globigerinoides cf. obliquus, Globigerinoides quadrilobatus immaturus, Globigerinoides quarilobatus sacculifer, Globigerinoides quadrilobatus trilobus, Globigerinoides sicanus, Globigerinoides subquadratus, Globoquadrina altispira, Globoquadrina baroemoensis, Globoquadrina dehiscens, Globoquadrina venezuelana, Globorotalia mayeri, Globorotalia semivera, Globorotalia obesa, Globorotalia peripheroronda, Globorotalia scitula, Globorotaloides suteri, Neogloboquadrina continuosa, Praeorbulina transitoria, Prosphaeroidinella disjuncta

• Oshida et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.11, pp.919-933 DOI
• Yoshida et al. (1995) Geology of the Tsu-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)