Senriyama Formation

[ Top ] [ Japanese ]

Senriyama Formation Research Group for Osaka Group, 1951

Coherent formation
Pliocene - Pleistocene

Sedimentary facies: Fluvial
Sedimentary facies (Minor): Lacustrine
Lithofacies: Sands, Gravels
Lithofacies (Minor): Clay, Silt
Sedimentary structures: Graded bedding, Parallel stratification

Thickness: ca. 150 - 230 m
Lower limit: Unconformity (Kobe Group)

Senriyama Formation
[ Upper ]
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Shinden Member
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Shimakumayama Member
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[ Lower ]

Osaka Group (Senri, Osaka pref.)
[ Upper ]
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Ibaraki Formation
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Senriyama Formation
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[ Lower ]

Second Setouchi Supergroup (Osaka pref. - Hyogo pref.)
[ Upper ]
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Osaka 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: Katayama park, Katayama town, Suita city, Osaka pref.; Senrichuo park - Mount Shimakumayama, Toyonaka city, Osaka pref.
Tephra: Shimakumayama, Rotary, Shinden, Senriyama, Yellow, Ryugaike, Ss-Pnk

Miyachi et al. (2001) Geology of the Osaka-Tohokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 130p. (in Japanese with English abstract 6p.)