Sugata Mudstone Member

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Sugata Mudstone Member

Coherent formation
middle - late Miocene
Correlation: Hijirikawa Mudstone Member

Lithofacies: Siltstone, Silty mudstone
Lithofacies (Minor): Sandstone

Thickness: 450 - 680 m
Lower limit: Interfingered (Ogume Sandstone Member, Kuzuba Alternation Member)

Otogawa Formation (northern Himi, Toyama pref.)
[ Upper ]
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Sugata Mudstone Member
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Ogume Sandstone Member
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Kuzuba Alternation Member
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[ Lower ]

Tonami Group
[ Upper ]
~~~~~~~~~~~~~~
Mita Formation
~~~~~~~~~~~~~~
Otogawa Formation
~~~~~~~~~~~~~~
Tenguyama Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Himi - Nadaura, Toyama pref.
Fossils: Fish (Scales), Sponges (Makiyama sp.), Foraminifera, Radilarians, Diatoms
Fossils (Shellfishes): Limopsis tokaiensis, Portlandia sp., Solemya sp.
Tephra: Nakata Tuff, Uwada Tuff

Imai et al. (1966) Geology of the Ochigata and Abugashima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 67p. (in Japanese with English abstract 4p.)