noun
granitic magma
Technical term used in geology and petrology for magma with a composition that can crystallize into granite.
花崗岩質マグマは大陸地殻の形成に重要な役割を果たす。
Granitic magma plays an important role in the formation of continental crust.
Compound of 花崗岩 (granite) + 質 (quality, nature) + マグマ (magma). A straightforward technical term.