Tassobe Formation

Tassobe Formation (Hirokawa and Yoshida, 1956) Yoshida et al., 1992

Correlation: Sakamotozawa Formation

Coherent formation
Permian
Correlation: Sakamotozawa Formation

Lithofacies: Limestone, Slate
Lithofacies (Minor): Sandstone, Tuff
Lithofacies (Bottom): Basal conglomerate

Thickness: ca. 1,000 m
Thickness (Basal): ca. 10 - 40 m
Lower limit: Unconformity (Ozasa Formation, Nakazai Formation)

South Kitakami Belt (Ohasama, Iwate pref.)
[ Upper ]
~~~~~~~~~~~~~~
Toyoma Formation
--------------
Kumonoueyama Formation
?--?--?--?--?-
Tassobe Formation
~~~~~~~~~~~~~~
Ozasa Formation
?--?--?--?--?-
Nakazai Formation
?--?--?--?--?-
[ Lower ]

South Kitakami Belt (Tassobe, Iwate pref.)
[ Upper ]
?--?--?--?--?-
Sotokawame Formation
?--?--?--?--?-
Tassobe Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Nakasai - Kogayo - Mount Dogusoku, Tassobe, Miyamori town, Tono city, Iwate pref.; Kurokisawa, Shimomasuzawa, Miyamori town, Tono city, Iwate pref.; Hinomata - Tochizawa, Sotokawame, Ohasama town, Hanamaki city, Iwate pref.
Fossils: Bivalves (Solenomorpha sp.), Gastropods, Brachiopods (Productus sp.), Corals (Waagenophyllum indicum)
Fossils (Fusulinids): Aceruoschwagerina? sp., Parafusulina cfr. gigantea, Parafusulina cfr. japonica, Parafusulina cfr. kaerimizuensis, Pseudofusulina vulgaris, Pseudoschwagerina schellwieni, Schwagerina sp.

Kawamura et al. (2013) Geology of the Hayachine San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)
Hirokawa and Yoshida (1956) Ohazama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 31p. (in Japanese with English abstract 9p.)