Kinshozan Quartz Diorite

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Kinshozan Quartz Diorite (Watabe et al., 1950) (Photo)

Type locality: Mount Kinshozan, Ogawa city, Hiki county, Saitama prefecture
Plutonic rocks
Middle - Late Permian (277.0 - 250.0 Ma, K-Ar; 281.5 - 292 Ma, U-Pb; 223, 149 Ma, FT)
Correlation: Kawaiyama Quartz Diorite

Metamorphic facies: Pumpellyite-Actinolite
Lithofacies: Quart diorite, Tonalite
Lithofacies (Minor): Diorite, Granitic pegmatite, Pelitic hornfels

Upper limit: Unconformity (Kozono Formation)
Upper limit (Hornfels): Unconformity (Atokura Formation)

Atokura Nappe (Saitama pref.)
[ Upper ]
/--/--/--/--/-
Yorii Welded Tuff, Paleocene
/--/--/--/--/-
Yorii Formation, Late Cretaceous - Paleocene
/--/--/--/--/-
Atokura Formation, Late Cretaceous
/--/--/--/--/-
Kinshozan Quartz Diorite, Permian
/--/--/--/--/-
[ Lower ]

Atokura Nappe (Gunma pref.)
[ Upper ]
/--/--/--/--/-
Kotsutateyama Tuff, Paleocene
/--/--/--/--/-
Atokura Formation, Late Cretaceous
/--/--/--/--/-
Yotsumatayama Quartz Diorite, Early Cretaceous
/--/--/--/--/-
Kawaiyama Quartz Diorite, Permian
/--/--/--/--/-
[ Lower ]

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

Distribution: Mount Kinshozan, Ogawa city, Hiki county, Saitama pref.; Mount Kurumayama, Yorii city, Osato county, Saitama pref.; Ogawa city, Hiki county, Saitama pref.; Kanezawa, Minano city, Chichibu county, Saitama pref.

Takagi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.7, pp.305-324, DOI
Makimoto and Takeuchi (1992) Geology of the Yorii District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)