Tsuchiyama Formation

[ Top ] [ Japanese ]

Tsuchiyama Formation Yoshida, 1978

Type locality (Upper): Tamuragawa river, Omiya - Kaminohira, Koka city, Shiga prefecture
Type locality (Lower): Karatogawa river - Fujiki, Koka city, Shiga prefecture
Coherent formation
First Seto Inland Sea
Sedimentary basin in island arc
Miocene

Sedimentary facies: Marine
Lithofacies (Upper): Interbedded sandstone and mudstone
Lithofacies (Lower): Conglomerate

Thickness: ca. 250 - 350 m
Upper limit: Conformity (Kurokawa Formation)
Lower limit: Unconformity

Tsuchiyama Formation
[ Upper ]
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Sendani Member
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Karatogawa Member
~~~~~~~~~~~~~~
[ Lower ]

Ayugawa Group
[ Upper ]
~~~~~~~~~~~~~~
Marutadani Formation
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Kurokawa Formation
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Tsuchiyama Formation
~~~~~~~~~~~~~~
[ Lower ]

First Setouchi Supergroup (Tsuchiyama, Shiga pref.)
[ Upper ]
~~~~~~~~~~~~~~
Ayugawa Group
~~~~~~~~~~~~~~
[ Lower ]

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

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

Distribution: Omiya - Kaminohira - Tamuragawa river - Karatogawa river - Fujiki - Kanigasaka - Sasaotoge pass, Koka city, Shiga pref.

Miyamura et al. (1981) Geology of the Kameyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 128p. (in Japanese with English abstract 9p.)