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Hayama Gabbroic Mass

Different from Mount Hayama at Kawamata city, Fukushima pref.

• Plutonic rocks
• Roof pendant of Abukuma Granitic Rocks
• Early Cretaceous
• Intruded by: Hornblende biotite granodiorite, Biotite granite
• Correlation: Shiroumaishiyama Gabbroic Mass, Utsushigatake Gabbroic Mass, Kuroishiyama Gabbroic Mass, Kurakakeyama Gabbroic Mass, Katasoneyama Gabbroic Mass

• Lithofacies: Magnetite series
• Lithofacies: Gabbro, Quartz diorite

• Distribution (East-West): ca. 2.3 km
• Distribution (South-North): ca. 0.9 km

• Distribution: Mount Hayama, Tosawa, Nihonmatsu city, Fukushima pref.

• Kubo et al. (2015) Geology of the Kawamata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 86p. (in Japanese with English abstract 4p.)