Seidan Formation

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Seidan Formation

Coherent formation
Izumi sedimentary basin
Forearc basin associated with strike-slip fault related to Median Tectonic Line
Late Cretaceous, Campanian

Sedimentary facies: Northern margin of the sedimentary basin
Sedimentary facies: non-Turbidite
Lithofacies:

Thickness: 900 m

Northern marginal facies (Awaji, Hyogo pref.)
[ Upper ]
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Seidan Formation
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[ Lower ]

Izumi Group
[ North ]
~~~~~~~~~~~~~~
Northern marginal facies
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Main facies
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Southern facies
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[ South ]

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

Distribution: Awaji city, Hyogo pref.

Makimoto et al. (2004) Geology of the Kokawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 89p. (in Japanese with English abstract 4p.)
Miyata et al. (1993) Geology of the Wakayama and Ozaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 4p.)