Hakusekisan Limestone

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Hakusekisan Limestone

Type locality: Mount Hakusekisan, Ogano city, Chichibu county, Saitama prefecture
Accretionary complex
A huge slub of reef limestones in an accretionary complex
Deposition (Limestone): Early Permian
Accretion: Jurassic

Sedimentary facies: Marine
Lithofacies: Limestone

Distribution (Length): ca. 2.3 km
Distribution (Width): 150 m

Sumaizuku Unit
[ East ]
/--/--/--/--/-
Hakusekisan Limestone
/--/--/--/--/-
Futagoyama Limestone
/--/--/--/--/-
Kanozan Limestone
/--/--/--/--/-
[ West ]

Northern Chichibu Belt
[ Upper ]
/--/--/--/--/-
Sumaizuku Unit
/--/--/--/--/-
Hebiki Unit
/--/--/--/--/-
Kazahayatoge Unit
/--/--/--/--/-
Kamiyoshida Unit
/--/--/--/--/-
Kashiwagi Unit
/--/--/--/--/-
[ Lower ]

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

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

Distribution: Mount Hakusekisan, Kagahara, Kanna city, Tano county, Gunma pref.
Fossils: Misellina claudiae, Pseudofusulina ahlfeldi, Pseudofusulina fusiformis, Pseudofusulina kraffti

Okubo and Horiguchi (1969) Geology of the Mamba District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (in Japanese with English abstract 5p.)