In the formation of gneiss from granite,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

In the formation of gneiss from granite, the process involves the dissolution of crystals, with atoms and ions migrating and reorganizing to form new crystals, resulting in the distinctive compositional bands. This is a result of high temperature and pressure conditions during metamorphism.

In the Formation of Gneiss from Granite,distinctive Compositional Bands Form