Migmatite｜混合岩：一塊岩石可以同時保留變質岩與新生火成岩的兩種身份

Migmatite is a high-grade metamorphic rock that contains both metamorphic material and felsic igneous material. Earth@Home describes it as a mixture in which gneiss-like metamorphic bands can occur together with lighter igneous portions, commonly producing folded or contorted banding.

混合岩成因與部分熔融比例可以非常複雜；有條帶的岩石也不一定就是 migmatite，單靠照片不能重建其完整變質—熔融歷史。