Higashifukakaya Formation

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Higashifukakaya Formation Ehiro, 1979

Type locality: Higashifukakaya, Fujisawa town, Ichinoseki city, Iwate prefecture
Coherent formation
Permian
Intruded by: Shinchi Gabbro
Correlation: Kanokura Formation

Sedimentary facies: Marine
Lithofacies: Mudstone
Lithofacies (Upper, MInor): Usuginu Conglomerate, Sandstone, Interbedded sandstone and mudstone

Thickness: ca. 1,000 m
Thickness (Upper, apparent): ca. 800 m
Thickness (Lower, apparent): ca. 1,500 m
Upper limit: Conformity (Shinden Formation, Okago Formation)
Lower limit: Conformity (Nishikori Formation)

South Kitakami Belt (Fujisawa - Okago)
[ Upper ]
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Senmatsu Formation
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Okago Formation
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Shinden Formation
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Higashifukakaya Formation
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Nishikori Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Higashifukakaya - Sunagota - Sainokami - Aramaki - Konakogi - Nishifukakaya - Kyonosawa - Shimotsunaki - Matsukozawa, Fujisawa town, Ichinoseki city, Iwate pref.
Fossils (Limestone, Fusulinids): Lepidolina sp., Pseudofusulina sp.

Takeuchi and Mikoshiba (2002) Geology of the Senmaya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 76p. (in Japanese with English abstract 3p.)
Takeuchi and Kaneko (1996) Geology of the Shizugawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)