Ishido Gravels Member

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Ishido Gravels Member Harayama et al., 1989

Type locality: Ishido town, Higashiomi city, Shiga prefecture
Coherent formation
Pliocene - Pleistocene

Sedimentary facies: Terrestrial
Lithofacies: Gravels, Silt
Lithofacies (Minor): Sands, Clay
Sedimentary structures: Trough cross-stratification, Parallel stratification, Upward fining

Thickness: ca. 40 - 120 m
Lower limit: Transitional (Uriuzutoge Alternation Member)

Kusatsu Formation (Yokaichi hills, Shiga pref.)
[ Upper ]
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Ishido Gravels Member
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Uriuzutoge Alternation 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: Ishido town, Higashiomi city, Shiga pref.; Matsuoji, Aisho city, Echi county, Shiga pref.

Yoshida et al. (2003) Geology of the Omi-Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
Harayama et al. (1989) Geology of the Gozaishoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 145p. (in Japanese with English abstract 6p.)