Ochiai Sandstone Facies

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Ochiai Sandstone Facies Shibata, 1967

Invalid synonym: Isegi Sandstone and Mudstone Member, Kitanagano Facies

Type locality: Kajigahiro, Hakusan town, Tsu city, Mie prefecture
Coherent formation
Miocene sediments related to the paleo Setouchi inner sea
early Miocene

Lithofacies: Sandstone, Gravel-bearing sandstone, Conglomerate
Sedimentary structures: Parallel stratification, Planar cross-stratification

Thickness: ca. 150 - 200 m
Upper limit: Conformity (Mitsugano Tuffaceous Siltstone and Sandstone Member)
Lower limit: Conformity (Higashiaoyama Conglomerate Facies), Unconformity (Ryoke Metamorphic Rocks)

Ieki Formation
[ Upper ]
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Ochiai Sandstone Facies
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Higashiaoyama Conglomerate Facies
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[ Lower ]

Ichishi Group
[ Upper ]
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Katada Formation
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Oi Formation
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Ieki Formation
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Haze Formation
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[ Lower ]

First Setouchi Supergroup (Ichishi, Mie pref.)
[ Upper ]
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Ichishi 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: Kajigahiro - Lake Sumaguchiike - Lake Sodniike - Kaitogawa river, Hakusan town, Tsu city, Mie pref.; Kongopo - Agodani valley - Tanizoma - Mount Kaiishiyama, Sakakibara town, Tsu city, Mie pref.; Hosono, Misato town, Tsu city, Mie pref.
Fossils (Shellfishes): Crassostrea gravitesta, Kotorapecten egregious, Macoma (Macoma) izurensis, Macoma (Macoma) optiva, Periploma (Aelga) mitsuganoensis, Turritella sp.

Oshida et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.11, pp.919-933 DOI
Yoshida et al. (1995) Geology of the Tsu-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)