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Hakoshima Gabbro Matsuura, 2001
- Type locality: Hakoshima island, Higashino city, Toyota county, Hiroshima prefecture
- Plutonic rocks
- Late Cretaceous
- Intruded by: Kure Granite
- Lithofacies: Hornblende augite gabbro
- Distribution (East - West): 180 m
- Distribution (South - North): 250 m
- Distribution: Hakoshima island, Higashino city, Toyota county, Hiroshima pref.
- Matsuura (2001) Geology of the Mitsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 58p. (in Japanese with English abstract 4p.)