Ma 12

Coherent formation
late Pleistocene
Correlation: lower Itami Formation

Sedimentary facies: Marine
Sedimentary facies: Inner bay
Climate: Warm temperate, Cold temperate
Lithofacies: Clay

Host: Uemachi Formation, Middle Terrace Deposits
Thickness: 10 - 20 m
Upper limit: Unconformity
Lower limit: Unconformity

Tanaka Formation
[ Upper ]
?--?--?--?--?-
Ma 12
~~~~~~~~~~~~~~
Ma 11 (3)
~~~~~~~~~~~~~~
Ma 11 (2)
~~~~~~~~~~~~~~
Ma 11 (1)
~~~~~~~~~~~~~~
Ma 10
~~~~~~~~~~~~~~
Ma 9
~~~~~~~~~~~~~~
Ma 8
~~~~~~~~~~~~~~
Ma 7
~~~~~~~~~~~~~~
Ma 6
~~~~~~~~~~~~~~
Ma 5
~~~~~~~~~~~~~~
Ma 4
~~~~~~~~~~~~~~
Ma 3
~~~~~~~~~~~~~~
Ma 2
~~~~~~~~~~~~~~
Ma 1.7
~~~~~~~~~~~~~~
Ma 1.5
~~~~~~~~~~~~~~
Ma 1.3
~~~~~~~~~~~~~~
Ma 1
~~~~~~~~~~~~~~
Ma 0.5
~~~~~~~~~~~~~~
Ma 0
~~~~~~~~~~~~~~
Ma -1
?--?--?--?--?-
[ Lower ]

Underground of Osaka plain
[ Upper ]
+__+__+__+__+_
Namba Formation
~~~~~~~~~~~~~~
Tanaka Formation
--------------
Miyakojima Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Osaka pref.; Kobe port, Kobe city, Hyogo pref.

Fossils: Shellfishes (Turritella kuroshio)

Fossils (Foraminifera): Ammonia beccarii tepida, Ammonia kawachiensis, Brizalina striatula, Buccella frigida, Elphidium advenum, Elphidium incertum, Elphidium hispidulum, Elphidium translucens, Fissurina marginata, Nonion japonicum, Reussella naniwaensis, Valvalineria osakaensis

Fossils (Pollen): Abies sp., Alnus sp., Fagus sp., Pinus sp., Quercus (Cyclobalanopsis) sp., Quercus (Lepidobalanus) sp., Sciadopitys sp., Tsuga sp.

Hongo (2009) Jour. Geol. Soc. Japan, vol.115, no.2, pp.64-79 DOI
Miyachi et al. (2001) Geology of the Osaka-Tohokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 130p. (in Japanese with English abstract 6p.)
Miyachi et al. (1998) Geology of the Osaka-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 113p. (in Japanese with English abstract 5p.)
Huzita and Maeda (1985) Geology of the Osaka-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 5p.)
Huzita and Maeda (1984) Geology of the Suma District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 101p. (in Japanese with English abstract 7p.)
Huzita and Kasama (1982) Geology of the Osaka-Seihokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 112p. (in Japanese with English abstract 8p.)