Schist & Gneiss (Metamorphic)
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In plain terms
Schist is “shiny and layered.” Gneiss is “banded and tough.” Both are rocks shaped by pressure and heat.
Key takeaways
- Schist commonly shows mica-rich foliation and sparkle.
- Gneiss often shows light/dark mineral banding.
- Both form under directed stress and elevated temperatures.
- Foliation orientation can record tectonic forces.
- Context (mountain belts, shear zones) supports interpretation.