Question : Metamorphic rocks originate from-
Option 1: igneous rocks
Option 2: sedimentary rocks
Option 3: both igneous and sedimentary rocks
Option 4: None of these.
Correct Answer: both igneous and sedimentary rocks
Solution : The correct answer is both igneous and sedimentary rocks.
Metamorphic rocks are formed by the metamorphosis of the igneous or sedimentary rocks. In this process rocks are subjected to high temperature and pressure conditions inside the earth which leads to reorganisation of their molecule without altering their chemical character. In this texture and composition of the rock changes. Examples of metamorphic rocks are phyllite, schist, gneiss, quartzite and marble etc.
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