Nishiyama Member

Nishiyama Member Tokuhashi and Endo, 1983

Coherent formation
Fore-arc basin sediments (Kazusa trough)
Pleistocene

Lithofacies: Interbedded sands and silt
Lithofacies (Minor): Gravels

Thickness: 2 - 5 m

Kongochi Formation
[ Upper ]
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Nishiyama Member
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Ichinono Member
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[ Lower ]

Kazusa Group (central Boso peninsula)
[ Upper ]
~~~~~~~~~~~~~~
Kasamori Formation / Kongochi Formation
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Mandano Formation
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Chonan Formation
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Ichijiku Formation
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Kakinokidai Formation
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Kokumoto Formation
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Umegase Formation
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Otadai Formation
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Kiwada Formation
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Ohara Formation
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Namihana Formation
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Katsuura Formation
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Kurotaki Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Kongochi, Ichihara city, Chiba pref.; Nishiyama - Osakabe - Mount Nagarayama, Nagara city, Chosei county, Chiba pref.
Fossils (Trace fossils): Rosselia socialis

Tokuhashi and Endo (1984) Geology of the Anesaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)