Takato Granite

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Takato Granite Ryoke Research Group, 1955

Invalid synonym: Takato Quartz Diorite, Takato Granodiorite

Plutonic rocks
Late Cretaceus (ca. 90 - 57.7 Ma, Rb-Sr; 61 Ma, K-Ar)
Intruded in: Ryoke Metamorphic Rocks
Correlation: Tomigata Granite

Lithofacies (North - Central): Biotite granite, Granodiorite
Lithofacies (Southeast): Hornblende biotite tonalite

Distribution (East-West): ca. 6 km
Distribution (South-North): ca. 20 km
Upper limit: Unconformity (Tenjinyama Pyroclastic Rocks)

Younger Ryoke Granitoids (Takato, Nagano pref.)
~~~~~~~~~~~~~~
Katsuma Quartz Diorite
~~~~~~~~~~~~~~
Takato Granite
~~~~~~~~~~~~~~

Ryoke Belt
~~~~~~~~~~~~~~
Ryoke Metamorphic Rocks
~~~~~~~~~~~~~~
Younger Ryoke Granitoids
~~~~~~~~~~~~~~
Older Ryoke Granitoids
~~~~~~~~~~~~~~

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

Distribution: Hanatoya - Mount Fudogamine, Minowa city, Kamiina county, Nagano pref.; Kaminiiyama, Ina city, Nagano pref.

Makimoto et al. (1996) Geology of the Takato District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 6p.)