Shigaraki Gravels Member

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Shigaraki Gravels Member (Kondo, 1968)

Type locality: Sugiyama, Shigaraki town, Koka city, Shiga prefecture
Coherent formation
Pliocene
Correlation: Ofuku Member

Sedimentary facies: Terrestrial
Sedimentary facies: Wide and deep lake (Diatoms), Fluvial
Lithofacies: Gravels
Lithofacies (Minor): Sands, Silt
Sedimentary structures: Upward fining
Paleocurrent: from West

Thickness: ca. 20 - 50 m
Lower limit: Conformity (Nakasato Gravels and Clays Member), Unconformity (Granite, Tamba Belt)

Koka Formation (Shigaraki, Shiga pref.)
[ Upper ]
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Maki Member
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Shigaraki Gravels Member
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[ Lower ]

Kobiwako Group
[ Upper ]
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Takashima Formation
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Katata Formation
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Kusatsu Formation
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Gamo Formation
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Koka Formation
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Ayama Formation
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Iga Formation
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Ueno Formation
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[ Lower ]

Second Setouchi Supergroup (Shiga pref.)
[ Upper ]
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Kobiwako Group
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[ Lower ]

[ Upper ]
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Second Setouchi Supergroup
?--?--?--?--?-
First Setouchi Supergroup
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[ Lower ]

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

Distribution: Sugiyama - Kamiasamiya - Shimoasamiya - Karaiketoge pass - Nakasato, Shigaraki town, Koka city, Shiga pref.

Wakita et al. (2013) Geology of the Kyoto-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 124p. (in Japanese with English abstract 3p.)
Nakano et al. (2003) Geology of the Minakuchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 83p. (in Japanese with English abstract 3p.)