Heikedake Formation

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Heikedake Formation

Type locality: Urushidani valley, Ono city, Fukui prefecture
Volcanic rocks
Cretaceous
Intruded by: Quartz porphyry dikes

Lithofacies:

Upper limit: Conformity (Omodani Rhyolites)
Lower limit: Unconformity (Samondake Unit, Dosaiyama Conglomerate Member)

Heikedake Formation
[ Upper ]
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Saruzuk Conglomerate Member
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Urushidani Coal-bearing Member
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Hinotani Conglomerate Member = Hinotani Formation
~~~~~~~~~~~~~~
[ Lower ]

Heikedake Formation
[ Upper ]
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Saruzuk Conglomerate Member
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Urushidani Coal-bearing Member
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Shintani Tuff Breccia Member
~~~~~~~~~~~~~~
[ Lower ]

Asuwa Group (Fukui pref.)
[ Upper ]
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Heikedake Formation
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[ Lower ]

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

Distribution: Mount Heikedake, Ono city, Fukui pref. - Seki city, Gifu pref.; Asahidani valley - Hinotani valley - Urushidani valley, Ono city, Fukui pref.
Fossils (Plants): Cladophlebis hukuiensis, Onychiopsis elongata?, Podozamites griesbachi?

Kawai (1964) Neo, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 12p.)
Kawai et al. (1957) Arashimadake, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 110p. (in Japanese with English abstract 13p.)