metamorphism

noun

1. change in the structure of rock by natural agencies such as pressure or heat or introduction of new chemical substances
   Terjemahkan ke Indonesia sumber: wordnet30
2. The state or quality of being metamorphic; the process by which the material of rock masses has been more or less recrystallized by heat, pressure, etc., as in the change of sedimentary limestone to marble.
   Terjemahkan ke Indonesia sumber: webster1913