[S-MP42] Physics and Chemistry of Minerals

[SMP42-P03] Mafic intrusion from Cape Nonamai,Shakotan Peninsula,Hokkaido

*Haruka Hirose¹, Satoshi Okamura¹ (1.Hokkaido Education University, Sapporo)

Keywords:fractional crystallization, dolerite, mafic intrusion

Late Miocene doleritic intrusion are discussed from a petrological point of view.The intrusion consists of massive zone and layered zone.The massive zone is characterized by primitive olivine basalt,and the layered zone has more than 4 dolerite layers,which was originated by fractional crystallization from the mafic magma.