HammoAltag

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Metamorphism is the transformation of existing rock (the protolith) into a new rock type through the application of heat, pressure, or both, causing changes in mineral composition and/or texture. The resulting rocks are called metamorphic rocks
byHammoAltag
 
Igneous rocks are formed from the cooling and solidification of molten rock, either underground (intrusive) or on the surface (extrusive). Molten rock beneath the Earth's surface is called magma, and when it reaches the surface, it is called lava.
byHammoAltag