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Hashihama Granite
- Plutonic rocks
- Late Cretaceous
- Intruded by: Quartz porphyry dikes
- Intruded in: Ryoke Granites
- Lithofacies: Biotite granite
- Lithofacies (Minor): Pegmatite, Aplite, Granite porphyry
- Hiroshima Granites (Imabari, Ehime pref.)
- [ Young ]
- ~~~~~~~~~~~~~~
- Hashihama Granite
- ~~~~~~~~~~~~~~
- [ Old ]
------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hashihama - Namikata - Obe - Mategata, Imabari city, Ehime pref.
- Hirokawa (1965) Imabari-Seibu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 19p. (in Japanese with English abstract 6p.)