Entsunagi Mudstone Member

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Entsunagi Mudstone Member

Invalid synonym: Entsunagi Formation

Coherent formation
Miocene
Correlation: Mushizaki Mudstone Member, Wakura Mudstone Member

Sedimentary facies: Marine
Lithofacies: Silty mudstone
Lithofacies (Basal): Glauconite sandstone, Siltstone

Thickness: 250 - 300 m
Thickness (Basal): 60 - 80 cm
Upper limit: Unconformity (Futaana Siltstone Member)
Lower limit: Conformity (Suso Mudstone Member)

Otogawa Formation (Notojima island, Ishikawa pref.)
[ Upper ]
--------------
Futaana Siltstone Member
~~~~~~~~~~~~~~
Entsunagi Mudstone Member
--------------
[ Lower ]

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

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

Distribution: Notojimabagaura town - Entsunagi, Nanao city, Ishikawa pref.
Fossils: Diatoms (Cosinodiscus sp.), Sponges (Spicules, Makiyama sp.)

Imai (1965) Koguchiseto, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 26p. (in Japanese with English abstract 4p.)