Amakata Formation

[ Top ] [ Japanese ]

Amakata Formation

Coherent formation
middle Miocene

Lithofacies: Sandstone

Thickness: 100 m or thinner
Lower limit: Unconformity (Mikura Group)

Amakata Formation
[ Upper ]
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Towata Mudstone
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Amanomiya Sandstone
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Haramishi Conglomerate
~~~~~~~~~~~~~~
[ Lower ]

Amakata Formation
[ Upper ]
~~~~~~~~~~~~~~
Shishigahana Conglomerate
~~~~~~~~~~~~~~
[ Lower ]

Kurami Group
[ Upper ]
~~~~~~~~~~~~~~
Matsuba Formation
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Amakata Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Shishigahana park, Shikiji, Iwata city, Shizuoka pref.; Ichinomiya, Morimachi city, Shuchi county, Shizuoka pref.

Saito and Isomi (1954) Akihasan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 34p. (in Japanese with English abstract 10p.)