Siltstone Sandstone Member

[ Top ] [ Japanese ]

Siltstone Sandstone Member Ishii et al., 1982

Type locality: Asai, Higashimatsushima city, Miyagi prefecture
Coherent formation
Miocene

Sedimentary facies: Marine
Lithofacies: Interbedded siltstone, sandstone and tuff

Thickness: ca. 20 - 40 m
Upper limit: Unconformity (Neko Formation, Mitsuya Formation)
Lower limit: Conformity (Diatomaceous Siltstone Member)

Otsuka Formation
[ Upper ]
~~~~~~~~~~~~~~
Siltstone Sandstone Member
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Diatomaceous Siltstone Member
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Tuffaceous Sandstone Sandy Siltstone Member
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Siltstone Member
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[ Lower ]

Matsushimawan Group
[ Upper ]
~~~~~~~~~~~~~~
Otsuka Formation
-------'''/,,,
Toguhama Formation
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Matsushima Formation
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Ajiri Formation
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Sauramachi Formation
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Shiogama Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Asai - Shukuura - Ono, Higashimatsushima city, Miyagi pref.
Fossils (Trace fossils): Pipe rocks

Ishii et al. (1982) Geology of the Matsushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 9p.)