Osako Complex

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Osako Complex Yamato Omine Research Group, 2005

Invalid synonym: Takahara Formation (Limestone-free part)

Type locality: Down reaches of Osako Dam, Osako, Kawakami city, Yoshino county, Nara prefecture
Accretionary complex
Early Cretaceous, Valanginian - Barremian (Radiolarians)

Sedimentary facies: Marine

Upper limit: Thrust fault

Southern Chichibu Belt (Nara pref.)
[ Upper ]
/--/--/--/--/-
Sannoko Complex
/--/--/--/--/-
Kitamatagawa Complex
/--/--/--/--/-
Okutamadani Complex
/--/--/--/--/-
Kuroishi Complex
/--/--/--/--/-
Daifugendake Complex = Togano Unit
/--/--/--/--/-
Wasabidani Complex = Sanboasn Unit
/--/--/--/--/-
Osako Complex
/--/--/--/--/-
[ Lower ]

Southern Chichibu Belt
[ Upper ]
/--/--/--/--/-
Ohirayama Unit
/--/--/--/--/-
Togano Unit
/--/--/--/--/-
Sanbosan Unit
/--/--/--/--/-
[ Lower ]

Chichibu Belt
[ Upper ]
/--/--/--/--/-
Kurosegawa Belt
/--/--/--/--/-
Northern Chichibu Belt
/--/--/--/--/-
Southern Chichibu Belt
/--/--/--/--/-
[ Lower ]

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

Distribution: Central Kii peninsula, Kawakami city - Kurotaki city, Yoshino county, Nara pref.; Osako, Kawakami city, Yoshino county, Nara

Shimura et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.5, pp.349-365 DOI
Ota et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.5, pp.329-347 DOI