Ishikiri Tonalite

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Ishikiri Tonalite Collaborative Research Group for the Ryoke Belt in the Ikoma Mountains, 1986

Type locality: Ishikiri, Higashiosaka city, Osaka prefecture
Plutonic rocks
Late Cretaceus
Intruded by: Katano Granite
Intruded in: Ikomayama Gabbro

Lithofacies: Hornblende biotite tonalite, Granodiorite
Structures: Gneissose

Distribution (East - West): 0.3 km
Distribution (South - North): 0.5 km

Younger Ryoke Granitoids (Ikoma, Nara pref. - Osaka pref.)
[ Young ]
~~~~~~~~~~~~~~
Tsuda Granite
~~~~~~~~~~~~~~
Shijonawate Granodiorite
~~~~~~~~~~~~~~
Katano Granite
--------------
Tomio Granite
~~~~~~~~~~~~~~
Tenno Granite
~~~~~~~~~~~~~~
Kisaichi Granite
~~~~~~~~~~~~~~
Ishikiri Tonalite
~~~~~~~~~~~~~~
[ Old ]

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

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

Distribution: Ishikiri, Higashiosaka city, Osaka pref.

Miyachi et al. (2001) Geology of the Osaka-Tohokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 130p. (in Japanese with English abstract 6p.)