Metamorphic ​

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​Some examples of metamorphic rocks are Marble, Quartzite, and Slate. Metamorphic rocks are rocks formed by pressure and heat. Metamorphic rock starts forming underground with pressure and super heat called magma. Magma is created when the plates push together causing friction. That is how metamorphic rocks are formed. Next we will talk about sedimentary rocks.

http://www.sciencekids.co.nz/sciencefacts/earth/metamorphicrocks.html