QuestionAugust 24, 2025

19. What geologic processes on Earth produce metamorphic rocks?

19. What geologic processes on Earth produce metamorphic rocks?
19. What geologic processes on Earth produce metamorphic rocks?

Solution
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Answer

Heat, pressure, and chemically active fluids produce metamorphic rocks. Explanation 1. Define Metamorphism Metamorphism involves the alteration of existing rocks due to heat, pressure, and chemically active fluids. 2. Heat **Heat** causes recrystallization of minerals without melting, altering rock structure. 3. Pressure **Pressure** from tectonic forces compacts and deforms rocks, changing their mineralogy. 4. Chemically Active Fluids Fluids facilitate ion exchange, promoting new mineral formation.

Explanation

1. Define Metamorphism<br /> Metamorphism involves the alteration of existing rocks due to heat, pressure, and chemically active fluids.<br /><br />2. Heat<br /> **Heat** causes recrystallization of minerals without melting, altering rock structure.<br /><br />3. Pressure<br /> **Pressure** from tectonic forces compacts and deforms rocks, changing their mineralogy.<br /><br />4. Chemically Active Fluids<br /> Fluids facilitate ion exchange, promoting new mineral formation.
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