Hiramatsu Sandstone and Siltstone Member

[ Top ] [ Japanese ]

Hiramatsu Sandstone and Siltstone Member Itoigawa, 1961

Type locality: Hattorigawa river, Hiramatsu, Iga city, Mie prefecture
Coherent formation
First Seto Inland Sea
Sedimentary basin in island arc
Miocene

Sedimentary facies: Shallow marine
Lithofacies: Sandstone, Siltstone
Lithofacies (Minor): Tuff
Sedimentary structures: Parallel stratification, Large scale planar cross-stratification

Thickness: ca. 40 - 300 m
Upper limit: Conformity (Makino Pebbly Mudstone Member)
Lower limit: Transitional (Nenobi Granule Conglomerate Member), Unconformity (Ryoke Metamorphic Rocks)

Awa Group
[ Upper ]
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Makino Pebbly Mudstone Member
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Hiramatsu Sandstone and Siltstone Member
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Nenobi Granule Conglomerate Member
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Higashitanihata Conglomerate Member
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[ Lower ]

First Setouchi Supergroup (Awa basin, Mie pref.)
[ Upper ]
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Awa 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: Hattorigawa river, Hiramatsu - Sakage, Iga city, Mie pref.
Fossils (Shellfishes): Dosinia nomurai, Euspira meisensis, Glycymeris cisshuensis, Ostrea gigas, Turritella s-hataii, Venericardia siogamensis

Kawabe et al. (1996) Geology of the Ueno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 99p. (in Japanese with English abstract 5p.)
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.)