Question

give reason metamorphic rocks are crystallized in solid state ​

Answer 1

Answer:

Metamorphism usually involves slow changes to rocks in the solid state, as atoms or ions diffuse out of unstable minerals that are breaking down in the given pressure and temperature conditions and migrate into new minerals that are stable in those conditions.

Answer 2

Answer:

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During metamorphism the mineral content and texture of the protolith are changed due to changes in the physical and chemical environment of the rock. Metamorphism can be caused by burial, tectonic stress, heating by magma, or alteration by fluids. ... A rock undergoing metamorphism remains a solid rock during the process.