Explain the chemical reactions leading to metamorphism.
Metamorphism is the process by which rocks undergo changes in mineralogy, texture, and sometimes chemical composition due to changes in temperature, pressure, and the presence of chemically active fluids. The chemical reactions associated with metamorphism are complex and can vary depending on the rock type and the specific conditions of metamorphism. Generally, metamorphism occurs in the Earth's crust and upper mantle, where rocks experience high temperatures and pressures.
1. Recrystallization:
One of the primary chemical reactions during metamorphism is recrystallization. This process involves the growth of new minerals from the existing ones without the introduction of new chemical elements. For example, in ________ ________ ____ _____ ________.
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