Haigyu Group

Haigyu Group Hirayama et al., 1956

Type locality: Haigyu, Naka city, Naka county, Tokushima prefecture
Coherent formation
late Permian (Fusulinids, Radiolarians)
Correlation: Yasuba Conglomerate, Ichinose Group

Sedimentary facies: Shallow marine
Lithofacies: Sandstone
Lithofacies (Minor): Conglomerate, Limestone conglomerate

Thickness: ca. 75 - 400 m

Kurosegawa Belt (Sakashu, Tokushima pref.)
[ Upper ]
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Sakashu Group
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Kochigatani Group
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Haigyu Group
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Mitaki Igneous Rocks
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Miyagadani Metamorphic Rocks
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[ Lower ]

Chichibu Belt
[ Upper ]
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Kurosegawa Belt
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Northern Chichibu Belt
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Southern Chichibu Belt
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[ Lower ]

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

Distribution: Haigyu - Nakatani - Takanosekyo valley - Kominono - Kito - Mizo- Usugatani - Oriudanigawa river - Nakagawa river - Mononobegawa river, Naka city, Naka county, Tokushima pref.; Befu valley, Kami city, Tokushima pref.; Mount Ijiyama, Kami city, Kochi pref.
Fossils (Fusulinids): Armenia asiatica, PCondonofusiella cuniculata, Lepdolina kumaensis, Lepdolina toriyamai, Misellina claudiae, Parafusulina? sp., Pseudodoliolina pseudolepida gravitesta, Schwagerina aff. acris, Skinnerella gruperaensis, Yabeina columbiana, Yabeina gubleri, Yabeina yasubaensis
Fossils (Radiolarians): Albaillella cf. asymmetrica, seudoalbaillella longicornis, Pseudoalbaillella scalprata

Hara et al. (2014) Geology of the Kitagawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 4p.)