玄げん武ぶ岩がん質しつマグマげんぶがんしつマグマMeanings1expression, nounbasaltic magmageologyGeological term for magma with a composition that solidifies into basalt.玄げん武ぶ岩がん質しつマグマは粘ねん性せいが低ひくく、流ながれやすい。Basaltic magma has low viscosity and flows easily.
