noun
crystallization differentiation
Technical term in geology/petrology referring to the process by which crystals separate from magma during cooling, leading to chemical differentiation of the remaining melt.
結晶分化作用はマグマの化学組成を変化させる重要なプロセスである。
Crystallization differentiation is an important process that changes the chemical composition of magma.
Compound of 結晶 (kesshō, 'crystal') + 分化 (bunka, 'differentiation') + 作用 (sayō, 'action'). A calque from English 'crystallization differentiation'.