In the Formation of Gneiss from a Granite Protolith,distinctive Compositional

question 2

Multiple Choice

In the formation of gneiss from a granite protolith,distinctive compositional bands form because of

• A) crystals migrating within the rock.
• B) crystals dissolving,with atoms and ions migrating and reorganizing as new crystals.
• C) crystals melting,with new crystals solidifying in color bands.
• D) chemical reactions with groundwater.

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