Why Will Metamorphic Rocks Found in a Contact Metamorphism Aureole

question 40

Multiple Choice

Why will metamorphic rocks found in a contact metamorphism aureole be nonfoliated?

• A)Because the main agent of metamorphism is heat, which will result in intergrown crystals
• B)Because the pressures involved with contact metamorphism destroy foliated crystals
• C)Because the temperatures associated with this are too low to alter the rock
• D)Because the velocity of the hydrothermal fluids will carry foliated materials away

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