Ot1 Unit

Coherent formation
southern Yezo Forearc basin (Jobanoki basin)
middle Miocene

Sedimentary facies: Marine
Sedimentary facies: Shelf - Upper continental slope
Sedimentary facies: Submarine channel-fill deposit, Submarine slump scar-fill deposit

Otsu channel
[ Upper ]
?--?--?--?--?-
Ot3 Unit
~~~~~~~~~~~~~~
Ot2 Unit
~~~~~~~~~~~~~~
Ot1 Unit
~~~~~~~~~~~~~~
[ Lower ]

Taga Group (Otsu, Ibaraki pref.)
[ Upper ]
?--?--?--?--?-
Otsu channel
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Otsu village, Kitaibaraki city, Ibaraki pref.

Ando et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.49-67 DOI