Any rock, either igneous or sedimentary, may be transformed into a metamorphic rock, by going through profound physical and/or chemical changes under increased pressure and temperature.

Question

Quizplus · Accepted Answer

Metamorphic rocks are formed from pre-existing rocks, which undergo changes due to increased heat and pressure. These pre-existing rocks may be igneous, sedimentary or even other metamorphic rocks. Therefore, any rock, either igneous or sedimentary, can be transformed into a metamorphic rock.

Any Rock, Either Igneous or Sedimentary, May Be Transformed into a Metamorphic