During Metamorphism, What Is the Major Effect of Chemically Active

question 15

Multiple Choice

During metamorphism, what is the major effect of chemically active fluids?

• A)They aid in the movement of dissolved silicate constituents and facilitate growth of the mineral grains.
• B)They increase the pressures in deeply buried, regional- metamorphic zones.
• C)They prevent partial melting so solid rocks can undergo very high temperature regional metamorphism.
• D)They facilitate the formation of schistosity and gneissic banding in hornfels and slates.

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