Kori Formation

[ Top ] [ Japanese ]

Kori Formation (Takaya and Ichihara, 1961) Miyachi et al., 2001

Type locality: Kori, Hirakata city, Osaka prefecture
Coherent formation
Pliocene - Pleistocene

Sedimentary facies: Fluvial, Lacustrine
Lithofacies: Sands, Gravels, Marine clay
Lithofacies (Minor): Freshwater clay

Thickness: ca. 50 m
Upper limit: top of Ma 6
Lower imit: bottom of Ma 2

Osaka Group (Hirakata, Osaka pref.)
[ Upper ]
~~~~~~~~~~~~~~
Shinkori Formation
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Kori Formation
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Ikaga 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
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Kori - Kinyahonmachi town - Kunimatsu town - Ogaito town, Hirakata city, Osaka pref.
Tephra: Yamada, Ss-Az, Hacchoike
Key bed (Marine clay): Ma 2, Ma 3, Ma 4, Ma 5, Ma 6

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.)