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.

Question

Quizplus · Accepted Answer

The formation of gneiss from a granite protolith involves the process of metamorphism, where crystals dissolve and their atoms and ions migrate and reorganize into new crystals, leading to the development of distinctive compositional bands. This process is a part of metamorphic differentiation.

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