Deformation is the process by which rock is subjected to stress conditions (e.g heat and pressure) that may result in folding or faulting of the rock,
But Metamorphism is the process by which existing rock texture changes to new mineral composition.
Deformation is a term used to describe a process that alters the shape or size of a rock or region of the earth's crust. The type of deformation depends on the type of stress and the type of rock present in a particular region of the earth's crust.
However, Metamorphism is the process by which existing rock texture changes to new mineral composition.
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