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Ikomayama Gabbro

• Type locality: Mount Ikomayama, Nara prefecture - Osaka prefecture
• Plutonic rocks
• Cretaceous (192 Ma, Sm-Nd)
• Intruded by: Ishikiri Tonalite

• Lithofacies: Hornblende gabbro, Pyroxene hornblende gabbronorite
• Lithofacies (Minor): Olivine-bearing gabbronorite

• Distribution (East - West): 5.2 km
• Distribution (South - North): 4.5 km

• Distribution: Mount Ikomayama, Nara pref. - 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.)