Nango Gravels and Clays Member

[ Top ] [ Japanese ]

Invalid synonym: Nango Alternation Member, Nango Formation, Arahari Alternation Member

Type locality: Nango, Otsu city, Shiga prefecture
Coherent formation
Pliocene - Pleistocene
Correlation: Otonoyama Formation

Sedimentary facies: Terrestrial
Lithofacies: Breccia, Silt, Sands
Lithofacies (Minor): Lignite

Thickness: ca. 5 - 80 m or thicker
Upper limit: Transitional (Asagarano Sands Member, Seta Gravels Member)
Lower limit: Unconformity (Tamba Belt, Late Cretaceous granites)

Gamo Formation (south Biwako, Shiga pref.)
[ Upper ]
--------------
Nango Gravels and Clays Member
~~~~~~~~~~~~~~
[ Lower ]

Kobiwako Group
[ Upper ]
--------------
Takashima Formation
--------------
Katata Formation
--------------
Kusatsu Formation
--------------
Gamo Formation
--------------
Koka Formation
--------------
Ayama Formation
--------------
Iga Formation
--------------
Ueno Formation
~~~~~~~~~~~~~~
[ Lower ]

Second Setouchi Supergroup (Shiga pref.)
[ Upper ]
~~~~~~~~~~~~~~
Kobiwako Group
~~~~~~~~~~~~~~
[ Lower ]

[ Upper ]
~~~~~~~~~~~~~~
Second Setouchi Supergroup
?--?--?--?--?-
First Setouchi Supergroup
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Nango - Kiryu town - Ishizue, Otsu city, Shiga pref.; Arahari - Narutani, Ritto city, Shiga pref.; Horaizaka - Sato - Ochiaigawa river - Hironogawa river, Konan city, Shiga pref.
Fossils (Insects): subfamily Donaciine, family Scarabaeidea
Fossils (Plants): Corylus sp., Cyclocarya paliurus, Fagus cf. microcarpa, Metasequoia disticha, Picea koribai, Pseudotsuga subrotunda, Pterocarya sp., Sapium sebiferum var. pleistoceaca, Stewartia monadelpha
Tephra: Sato, Jokoku I, Jokoku II, Arahari I, Arahari II, Arahari III, Kiryu I, Kiryu II

Wakita et al. (2013) Geology of the Kyoto-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 124p. (in Japanese with English abstract 3p.)
Nakano et al. (2003) Geology of the Minakuchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 83p. (in Japanese with English abstract 3p.)
Yoshida et al. (2003) Geology of the Omi-Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)