略語大辞典 [Geo] 27 OIB ocean-island basalt 海洋島玄武岩.ocean-island basalt; a rock; has uniformisotopic compositions; a mantle-derivedrock; ref. MORB(midocean ridge basalt);[Geo:Phys]. 丸善「略語大辞典」JLogosID : 11863836