Kawamata Mass

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Kawamata Mass Mizutani and Koido, 1992

Plutonic rocks
Late Cretaceous (87.4, 77.8 Ma, K-Ar; 77.2 Ma, FT)
Intruded by: Hornblende diorite porphyry dike
Intruded in: Mino Belt

Lithofacies: Hornblende biotite tonalite
Lithofacies (Minor): Quartz diorite

Distribution: ca. 0.8 x 1.5 km²
Upper limit: Unconformity (Atera Formation)

Kawamata Tonalite
[ North ]
~~~~~~~~~~~~~~
Kanayama Mass
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Kawamata Mass
~~~~~~~~~~~~~~
[ South ]

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Hidagawa river, Kawamata, Shirakawa city, Kamo county, Gifu pref.

Mizutani and Koido (1992) Geology of the Kanayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)