Tsuwa Sandstone Body

Tsuwa Sandstone Body Yamaguchi and Oho, 2007

Type locality: East coast of north Tsushima city, Nagasaki prefecture
Coherent formation
Eocene - middle Miocene

Sedimentary facies: Marine
Sedimentary facies: Slope
Depth of water: Bathyal
Lithofacies: Sandstone, Interbedded sandstone and mudstone, Mudstone
Sedimentary structures: Slump structures, Current ripples, Climbing ripples, Parallel stratification, Convolute lamination, Load cast, Flute marks, Groove marks
Sedimentary structures (Minor): Trough cross-stratification, Flaser bedding, Longitudinal furrows and ridges, Flame structures, Dish structures, Graded bedding

Taishu Group (North, East coast)
[ Upper ]
?--?--?--?--?-
Tsuwa Sand Body
?--?--?--?--?-
Goneo Sand Body
?--?--?--?--?-
[ Lower ]

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

Distribution: Tsushima city, Nagasaki pref.

Yamaguchi and Oho (2007) Jour. Geol. Soc. Japan, vol.113, no.3, pp.113-126 DOI