(Invalid name) Shimokamo Sandstone

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(Invalid name) Shimokamo Sandstone

Sedimenary rocks in Shirahama Group.

It includes Harada Formation, Itami Formation, Nakagi Formation.

Coherent formation
Late Miocene - Pliocene
Intruded by: Ogamo Rhyolite

Sedimentary facies: Marine
Lithofacies: Tuffaceous sandstone
Lithofacies (Minor): Siltstone, Lapilli tuff, Crystalline tuff

Thickness: 50 - 100 m
Upper limit: Unconformity (Jo Formation)

Shirahama Group (Cape Irozaki)
[ Upper ]
?--?--?--?--?-
Ogamo Rhyolite
--------------
Aoichi Basalts
--------------
Ichijo Andesite
--------------
Ishiki Formation / Nijo Dacite
'''''''/,,,,,,
Irozaki Andesite
--------------
Shimokamo Sandstone
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[ Lower ]

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

Distribution: Shimokamo hot spring - Shimoono - Aoichi - Iruma - Mera, Minamiizu city, Kamo county, Shizuoka pref.
Fossils: Sharks (Isurus sp.)
Fossils (Shellfishes): Acmaeidae, Ctenamussium sp., Spondylus sp., Trochus sp., Turbo sp.

Sumi (1958) Mikomotojima, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 33p. (in Japanese with English abstract 6p.)