Geochemistry Interview Question:

Explain me how are the layers of schist separated into alternating light and dark minerals?

Submitted by: Muhammad

The heat and compression deep within the earth's magma are what cause these unique and interesting layers of striation.
Depending on the particular stresses and strains, heat and pressure applied, and the individual rocks and minerals there in that composed the material, they react differently and this is what causes the banding.
Submitted by: Muhammad