Yotsumatayama Quartz Diorite

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Yotsumatayama Quartz Diorite

Plutonic rocks
Early Cretaceous (105 Ma, K-Ar)

Lithofacies: Quart diorite

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 Yotsumatayama, Shimonita city, Kanra county, Gunma pref.

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.)